m4: delete unused ax m4 files
This commit is contained in:
parent
c26c687912
commit
453bd1666d
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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_append_compile_flags.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_APPEND_COMPILE_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT])
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#
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# DESCRIPTION
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#
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# For every FLAG1, FLAG2 it is checked whether the compiler works with the
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# flag. If it does, the flag is added FLAGS-VARIABLE
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#
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# If FLAGS-VARIABLE is not specified, the current language's flags (e.g.
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# CFLAGS) is used. During the check the flag is always added to the
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# current language's flags.
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#
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# If EXTRA-FLAGS is defined, it is added to the current language's default
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# flags (e.g. CFLAGS) when the check is done. The check is thus made with
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# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to
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# force the compiler to issue an error when a bad flag is given.
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#
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# INPUT gives an alternative input source to AC_COMPILE_IFELSE.
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#
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# NOTE: This macro depends on the AX_APPEND_FLAG and
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# AX_CHECK_COMPILE_FLAG. Please keep this macro in sync with
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# AX_APPEND_LINK_FLAGS.
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#
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# LICENSE
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#
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# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
|
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# Free Software Foundation, either version 3 of the License, or (at your
|
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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||||||
# Public License for more details.
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||||||
#
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# You should have received a copy of the GNU General Public License along
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||||||
# with this program. If not, see <http://www.gnu.org/licenses/>.
|
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||||||
#
|
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||||||
# As a special exception, the respective Autoconf Macro's copyright owner
|
|
||||||
# gives unlimited permission to copy, distribute and modify the configure
|
|
||||||
# scripts that are the output of Autoconf when processing the Macro. You
|
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||||||
# need not follow the terms of the GNU General Public License when using
|
|
||||||
# or distributing such scripts, even though portions of the text of the
|
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||||||
# Macro appear in them. The GNU General Public License (GPL) does govern
|
|
||||||
# all other use of the material that constitutes the Autoconf Macro.
|
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||||||
#
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||||||
# This special exception to the GPL applies to versions of the Autoconf
|
|
||||||
# Macro released by the Autoconf Archive. When you make and distribute a
|
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# modified version of the Autoconf Macro, you may extend this special
|
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# exception to the GPL to apply to your modified version as well.
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#serial 5
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AC_DEFUN([AX_APPEND_COMPILE_FLAGS],
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[AX_REQUIRE_DEFINED([AX_CHECK_COMPILE_FLAG])
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AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
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for flag in $1; do
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AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3], [$4])
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done
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])dnl AX_APPEND_COMPILE_FLAGS
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@ -1,65 +0,0 @@
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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS], [INPUT])
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#
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# DESCRIPTION
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#
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# For every FLAG1, FLAG2 it is checked whether the linker works with the
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# flag. If it does, the flag is added FLAGS-VARIABLE
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#
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# If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is
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# used. During the check the flag is always added to the linker's flags.
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#
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# If EXTRA-FLAGS is defined, it is added to the linker's default flags
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# when the check is done. The check is thus made with the flags: "LDFLAGS
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# EXTRA-FLAGS FLAG". This can for example be used to force the linker to
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# issue an error when a bad flag is given.
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#
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# INPUT gives an alternative input source to AC_COMPILE_IFELSE.
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#
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# NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG.
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# Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS.
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#
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# LICENSE
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#
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# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
|
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# Free Software Foundation, either version 3 of the License, or (at your
|
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
|
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
|
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# with this program. If not, see <http://www.gnu.org/licenses/>.
|
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#
|
|
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# As a special exception, the respective Autoconf Macro's copyright owner
|
|
||||||
# gives unlimited permission to copy, distribute and modify the configure
|
|
||||||
# scripts that are the output of Autoconf when processing the Macro. You
|
|
||||||
# need not follow the terms of the GNU General Public License when using
|
|
||||||
# or distributing such scripts, even though portions of the text of the
|
|
||||||
# Macro appear in them. The GNU General Public License (GPL) does govern
|
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# all other use of the material that constitutes the Autoconf Macro.
|
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#
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# This special exception to the GPL applies to versions of the Autoconf
|
|
||||||
# Macro released by the Autoconf Archive. When you make and distribute a
|
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# modified version of the Autoconf Macro, you may extend this special
|
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# exception to the GPL to apply to your modified version as well.
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#serial 5
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AC_DEFUN([AX_APPEND_LINK_FLAGS],
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[AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
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AX_REQUIRE_DEFINED([AX_APPEND_FLAG])
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for flag in $1; do
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AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3], [$4])
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done
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])dnl AX_APPEND_LINK_FLAGS
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@ -1,74 +0,0 @@
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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_check_compile_flag.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_CHECK_COMPILE_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
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#
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# DESCRIPTION
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#
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# Check whether the given FLAG works with the current language's compiler
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# or gives an error. (Warnings, however, are ignored)
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#
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# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
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# success/failure.
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#
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# If EXTRA-FLAGS is defined, it is added to the current language's default
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# flags (e.g. CFLAGS) when the check is done. The check is thus made with
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# the flags: "CFLAGS EXTRA-FLAGS FLAG". This can for example be used to
|
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# force the compiler to issue an error when a bad flag is given.
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#
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# INPUT gives an alternative input source to AC_COMPILE_IFELSE.
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#
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# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
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# macro in sync with AX_CHECK_{PREPROC,LINK}_FLAG.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
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# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
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#
|
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# You should have received a copy of the GNU General Public License along
|
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||||||
# with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
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#
|
|
||||||
# As a special exception, the respective Autoconf Macro's copyright owner
|
|
||||||
# gives unlimited permission to copy, distribute and modify the configure
|
|
||||||
# scripts that are the output of Autoconf when processing the Macro. You
|
|
||||||
# need not follow the terms of the GNU General Public License when using
|
|
||||||
# or distributing such scripts, even though portions of the text of the
|
|
||||||
# Macro appear in them. The GNU General Public License (GPL) does govern
|
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||||||
# all other use of the material that constitutes the Autoconf Macro.
|
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||||||
#
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# This special exception to the GPL applies to versions of the Autoconf
|
|
||||||
# Macro released by the Autoconf Archive. When you make and distribute a
|
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# modified version of the Autoconf Macro, you may extend this special
|
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# exception to the GPL to apply to your modified version as well.
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#serial 4
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AC_DEFUN([AX_CHECK_COMPILE_FLAG],
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[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
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AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
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AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
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ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
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_AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
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AC_COMPILE_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
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[AS_VAR_SET(CACHEVAR,[yes])],
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[AS_VAR_SET(CACHEVAR,[no])])
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_AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
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AS_VAR_IF(CACHEVAR,yes,
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[m4_default([$2], :)],
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[m4_default([$3], :)])
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AS_VAR_POPDEF([CACHEVAR])dnl
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])dnl AX_CHECK_COMPILE_FLAGS
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@ -1,74 +0,0 @@
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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_check_link_flag.html
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# ===========================================================================
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#
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# SYNOPSIS
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#
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# AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS], [INPUT])
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#
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# DESCRIPTION
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#
|
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# Check whether the given FLAG works with the linker or gives an error.
|
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# (Warnings, however, are ignored)
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#
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# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
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# success/failure.
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#
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# If EXTRA-FLAGS is defined, it is added to the linker's default flags
|
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# when the check is done. The check is thus made with the flags: "LDFLAGS
|
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# EXTRA-FLAGS FLAG". This can for example be used to force the linker to
|
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# issue an error when a bad flag is given.
|
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#
|
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# INPUT gives an alternative input source to AC_LINK_IFELSE.
|
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#
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# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
|
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# macro in sync with AX_CHECK_{PREPROC,COMPILE}_FLAG.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
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# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
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# Free Software Foundation, either version 3 of the License, or (at your
|
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# option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
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# Public License for more details.
|
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#
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# You should have received a copy of the GNU General Public License along
|
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# with this program. If not, see <http://www.gnu.org/licenses/>.
|
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#
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# As a special exception, the respective Autoconf Macro's copyright owner
|
|
||||||
# gives unlimited permission to copy, distribute and modify the configure
|
|
||||||
# scripts that are the output of Autoconf when processing the Macro. You
|
|
||||||
# need not follow the terms of the GNU General Public License when using
|
|
||||||
# or distributing such scripts, even though portions of the text of the
|
|
||||||
# Macro appear in them. The GNU General Public License (GPL) does govern
|
|
||||||
# all other use of the material that constitutes the Autoconf Macro.
|
|
||||||
#
|
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# This special exception to the GPL applies to versions of the Autoconf
|
|
||||||
# Macro released by the Autoconf Archive. When you make and distribute a
|
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# modified version of the Autoconf Macro, you may extend this special
|
|
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# exception to the GPL to apply to your modified version as well.
|
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#serial 4
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AC_DEFUN([AX_CHECK_LINK_FLAG],
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[AC_PREREQ(2.64)dnl for _AC_LANG_PREFIX and AS_VAR_IF
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AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
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AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [
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ax_check_save_flags=$LDFLAGS
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LDFLAGS="$LDFLAGS $4 $1"
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AC_LINK_IFELSE([m4_default([$5],[AC_LANG_PROGRAM()])],
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[AS_VAR_SET(CACHEVAR,[yes])],
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[AS_VAR_SET(CACHEVAR,[no])])
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LDFLAGS=$ax_check_save_flags])
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AS_VAR_IF(CACHEVAR,yes,
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|
||||||
[m4_default([$2], :)],
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||||||
[m4_default([$3], :)])
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AS_VAR_POPDEF([CACHEVAR])dnl
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])dnl AX_CHECK_LINK_FLAGS
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@ -1,87 +0,0 @@
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# ===========================================================================
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# http://www.gnu.org/software/autoconf-archive/ax_compiler_vendor.html
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# ===========================================================================
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#
|
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# SYNOPSIS
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|
||||||
#
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# AX_COMPILER_VENDOR
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#
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# DESCRIPTION
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#
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# Determine the vendor of the C/C++ compiler, e.g., gnu, intel, ibm, sun,
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# hp, borland, comeau, dec, cray, kai, lcc, metrowerks, sgi, microsoft,
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# watcom, etc. The vendor is returned in the cache variable
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# $ax_cv_c_compiler_vendor for C and $ax_cv_cxx_compiler_vendor for C++.
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#
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# LICENSE
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#
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# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
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# Copyright (c) 2008 Matteo Frigo
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#
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# This program is free software: you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the
|
|
||||||
# Free Software Foundation, either version 3 of the License, or (at your
|
|
||||||
# option) any later version.
|
|
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#
|
|
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# This program is distributed in the hope that it will be useful, but
|
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# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
|
|
||||||
# Public License for more details.
|
|
||||||
#
|
|
||||||
# You should have received a copy of the GNU General Public License along
|
|
||||||
# with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
||||||
#
|
|
||||||
# As a special exception, the respective Autoconf Macro's copyright owner
|
|
||||||
# gives unlimited permission to copy, distribute and modify the configure
|
|
||||||
# scripts that are the output of Autoconf when processing the Macro. You
|
|
||||||
# need not follow the terms of the GNU General Public License when using
|
|
||||||
# or distributing such scripts, even though portions of the text of the
|
|
||||||
# Macro appear in them. The GNU General Public License (GPL) does govern
|
|
||||||
# all other use of the material that constitutes the Autoconf Macro.
|
|
||||||
#
|
|
||||||
# This special exception to the GPL applies to versions of the Autoconf
|
|
||||||
# Macro released by the Autoconf Archive. When you make and distribute a
|
|
||||||
# modified version of the Autoconf Macro, you may extend this special
|
|
||||||
# exception to the GPL to apply to your modified version as well.
|
|
||||||
|
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#serial 15
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AC_DEFUN([AX_COMPILER_VENDOR],
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[AC_CACHE_CHECK([for _AC_LANG compiler vendor], ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor,
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dnl Please add if possible support to ax_compiler_version.m4
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[# note: don't check for gcc first since some other compilers define __GNUC__
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|
||||||
vendors="intel: __ICC,__ECC,__INTEL_COMPILER
|
|
||||||
ibm: __xlc__,__xlC__,__IBMC__,__IBMCPP__
|
|
||||||
pathscale: __PATHCC__,__PATHSCALE__
|
|
||||||
clang: __clang__
|
|
||||||
cray: _CRAYC
|
|
||||||
fujitsu: __FUJITSU
|
|
||||||
gnu: __GNUC__
|
|
||||||
sun: __SUNPRO_C,__SUNPRO_CC
|
|
||||||
hp: __HP_cc,__HP_aCC
|
|
||||||
dec: __DECC,__DECCXX,__DECC_VER,__DECCXX_VER
|
|
||||||
borland: __BORLANDC__,__CODEGEARC__,__TURBOC__
|
|
||||||
comeau: __COMO__
|
|
||||||
kai: __KCC
|
|
||||||
lcc: __LCC__
|
|
||||||
sgi: __sgi,sgi
|
|
||||||
microsoft: _MSC_VER
|
|
||||||
metrowerks: __MWERKS__
|
|
||||||
watcom: __WATCOMC__
|
|
||||||
portland: __PGI
|
|
||||||
tcc: __TINYC__
|
|
||||||
unknown: UNKNOWN"
|
|
||||||
for ventest in $vendors; do
|
|
||||||
case $ventest in
|
|
||||||
*:) vendor=$ventest; continue ;;
|
|
||||||
*) vencpp="defined("`echo $ventest | sed 's/,/) || defined(/g'`")" ;;
|
|
||||||
esac
|
|
||||||
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(,[
|
|
||||||
#if !($vencpp)
|
|
||||||
thisisanerror;
|
|
||||||
#endif
|
|
||||||
])], [break])
|
|
||||||
done
|
|
||||||
ax_cv_[]_AC_LANG_ABBREV[]_compiler_vendor=`echo $vendor | cut -d: -f1`
|
|
||||||
])
|
|
||||||
])
|
|
||||||
485
m4/ax_pthread.m4
485
m4/ax_pthread.m4
@ -1,485 +0,0 @@
|
|||||||
# ===========================================================================
|
|
||||||
# http://www.gnu.org/software/autoconf-archive/ax_pthread.html
|
|
||||||
# ===========================================================================
|
|
||||||
#
|
|
||||||
# SYNOPSIS
|
|
||||||
#
|
|
||||||
# AX_PTHREAD([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
|
|
||||||
#
|
|
||||||
# DESCRIPTION
|
|
||||||
#
|
|
||||||
# This macro figures out how to build C programs using POSIX threads. It
|
|
||||||
# sets the PTHREAD_LIBS output variable to the threads library and linker
|
|
||||||
# flags, and the PTHREAD_CFLAGS output variable to any special C compiler
|
|
||||||
# flags that are needed. (The user can also force certain compiler
|
|
||||||
# flags/libs to be tested by setting these environment variables.)
|
|
||||||
#
|
|
||||||
# Also sets PTHREAD_CC to any special C compiler that is needed for
|
|
||||||
# multi-threaded programs (defaults to the value of CC otherwise). (This
|
|
||||||
# is necessary on AIX to use the special cc_r compiler alias.)
|
|
||||||
#
|
|
||||||
# NOTE: You are assumed to not only compile your program with these flags,
|
|
||||||
# but also to link with them as well. For example, you might link with
|
|
||||||
# $PTHREAD_CC $CFLAGS $PTHREAD_CFLAGS $LDFLAGS ... $PTHREAD_LIBS $LIBS
|
|
||||||
#
|
|
||||||
# If you are only building threaded programs, you may wish to use these
|
|
||||||
# variables in your default LIBS, CFLAGS, and CC:
|
|
||||||
#
|
|
||||||
# LIBS="$PTHREAD_LIBS $LIBS"
|
|
||||||
# CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
|
|
||||||
# CC="$PTHREAD_CC"
|
|
||||||
#
|
|
||||||
# In addition, if the PTHREAD_CREATE_JOINABLE thread-attribute constant
|
|
||||||
# has a nonstandard name, this macro defines PTHREAD_CREATE_JOINABLE to
|
|
||||||
# that name (e.g. PTHREAD_CREATE_UNDETACHED on AIX).
|
|
||||||
#
|
|
||||||
# Also HAVE_PTHREAD_PRIO_INHERIT is defined if pthread is found and the
|
|
||||||
# PTHREAD_PRIO_INHERIT symbol is defined when compiling with
|
|
||||||
# PTHREAD_CFLAGS.
|
|
||||||
#
|
|
||||||
# ACTION-IF-FOUND is a list of shell commands to run if a threads library
|
|
||||||
# is found, and ACTION-IF-NOT-FOUND is a list of commands to run it if it
|
|
||||||
# is not found. If ACTION-IF-FOUND is not specified, the default action
|
|
||||||
# will define HAVE_PTHREAD.
|
|
||||||
#
|
|
||||||
# Please let the authors know if this macro fails on any platform, or if
|
|
||||||
# you have any other suggestions or comments. This macro was based on work
|
|
||||||
# by SGJ on autoconf scripts for FFTW (http://www.fftw.org/) (with help
|
|
||||||
# from M. Frigo), as well as ac_pthread and hb_pthread macros posted by
|
|
||||||
# Alejandro Forero Cuervo to the autoconf macro repository. We are also
|
|
||||||
# grateful for the helpful feedback of numerous users.
|
|
||||||
#
|
|
||||||
# Updated for Autoconf 2.68 by Daniel Richard G.
|
|
||||||
#
|
|
||||||
# LICENSE
|
|
||||||
#
|
|
||||||
# Copyright (c) 2008 Steven G. Johnson <stevenj@alum.mit.edu>
|
|
||||||
# Copyright (c) 2011 Daniel Richard G. <skunk@iSKUNK.ORG>
|
|
||||||
#
|
|
||||||
# This program is free software: you can redistribute it and/or modify it
|
|
||||||
# under the terms of the GNU General Public License as published by the
|
|
||||||
# Free Software Foundation, either version 3 of the License, or (at your
|
|
||||||
# option) any later version.
|
|
||||||
#
|
|
||||||
# This program is distributed in the hope that it will be useful, but
|
|
||||||
# WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
|
|
||||||
# Public License for more details.
|
|
||||||
#
|
|
||||||
# You should have received a copy of the GNU General Public License along
|
|
||||||
# with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
||||||
#
|
|
||||||
# As a special exception, the respective Autoconf Macro's copyright owner
|
|
||||||
# gives unlimited permission to copy, distribute and modify the configure
|
|
||||||
# scripts that are the output of Autoconf when processing the Macro. You
|
|
||||||
# need not follow the terms of the GNU General Public License when using
|
|
||||||
# or distributing such scripts, even though portions of the text of the
|
|
||||||
# Macro appear in them. The GNU General Public License (GPL) does govern
|
|
||||||
# all other use of the material that constitutes the Autoconf Macro.
|
|
||||||
#
|
|
||||||
# This special exception to the GPL applies to versions of the Autoconf
|
|
||||||
# Macro released by the Autoconf Archive. When you make and distribute a
|
|
||||||
# modified version of the Autoconf Macro, you may extend this special
|
|
||||||
# exception to the GPL to apply to your modified version as well.
|
|
||||||
|
|
||||||
#serial 22
|
|
||||||
|
|
||||||
AU_ALIAS([ACX_PTHREAD], [AX_PTHREAD])
|
|
||||||
AC_DEFUN([AX_PTHREAD], [
|
|
||||||
AC_REQUIRE([AC_CANONICAL_HOST])
|
|
||||||
AC_REQUIRE([AC_PROG_CC])
|
|
||||||
AC_REQUIRE([AC_PROG_SED])
|
|
||||||
AC_LANG_PUSH([C])
|
|
||||||
ax_pthread_ok=no
|
|
||||||
|
|
||||||
# We used to check for pthread.h first, but this fails if pthread.h
|
|
||||||
# requires special compiler flags (e.g. on Tru64 or Sequent).
|
|
||||||
# It gets checked for in the link test anyway.
|
|
||||||
|
|
||||||
# First of all, check if the user has set any of the PTHREAD_LIBS,
|
|
||||||
# etcetera environment variables, and if threads linking works using
|
|
||||||
# them:
|
|
||||||
if test "x$PTHREAD_CFLAGS$PTHREAD_LIBS" != "x"; then
|
|
||||||
ax_pthread_save_CC="$CC"
|
|
||||||
ax_pthread_save_CFLAGS="$CFLAGS"
|
|
||||||
ax_pthread_save_LIBS="$LIBS"
|
|
||||||
AS_IF([test "x$PTHREAD_CC" != "x"], [CC="$PTHREAD_CC"])
|
|
||||||
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
|
|
||||||
LIBS="$PTHREAD_LIBS $LIBS"
|
|
||||||
AC_MSG_CHECKING([for pthread_join using $CC $PTHREAD_CFLAGS $PTHREAD_LIBS])
|
|
||||||
AC_LINK_IFELSE([AC_LANG_CALL([], [pthread_join])], [ax_pthread_ok=yes])
|
|
||||||
AC_MSG_RESULT([$ax_pthread_ok])
|
|
||||||
if test "x$ax_pthread_ok" = "xno"; then
|
|
||||||
PTHREAD_LIBS=""
|
|
||||||
PTHREAD_CFLAGS=""
|
|
||||||
fi
|
|
||||||
CC="$ax_pthread_save_CC"
|
|
||||||
CFLAGS="$ax_pthread_save_CFLAGS"
|
|
||||||
LIBS="$ax_pthread_save_LIBS"
|
|
||||||
fi
|
|
||||||
|
|
||||||
# We must check for the threads library under a number of different
|
|
||||||
# names; the ordering is very important because some systems
|
|
||||||
# (e.g. DEC) have both -lpthread and -lpthreads, where one of the
|
|
||||||
# libraries is broken (non-POSIX).
|
|
||||||
|
|
||||||
# Create a list of thread flags to try. Items starting with a "-" are
|
|
||||||
# C compiler flags, and other items are library names, except for "none"
|
|
||||||
# which indicates that we try without any flags at all, and "pthread-config"
|
|
||||||
# which is a program returning the flags for the Pth emulation library.
|
|
||||||
|
|
||||||
ax_pthread_flags="pthreads none -Kthread -pthread -pthreads -mthreads pthread --thread-safe -mt pthread-config"
|
|
||||||
|
|
||||||
# The ordering *is* (sometimes) important. Some notes on the
|
|
||||||
# individual items follow:
|
|
||||||
|
|
||||||
# pthreads: AIX (must check this before -lpthread)
|
|
||||||
# none: in case threads are in libc; should be tried before -Kthread and
|
|
||||||
# other compiler flags to prevent continual compiler warnings
|
|
||||||
# -Kthread: Sequent (threads in libc, but -Kthread needed for pthread.h)
|
|
||||||
# -pthread: Linux/gcc (kernel threads), BSD/gcc (userland threads), Tru64
|
|
||||||
# (Note: HP C rejects this with "bad form for `-t' option")
|
|
||||||
# -pthreads: Solaris/gcc (Note: HP C also rejects)
|
|
||||||
# -mt: Sun Workshop C (may only link SunOS threads [-lthread], but it
|
|
||||||
# doesn't hurt to check since this sometimes defines pthreads and
|
|
||||||
# -D_REENTRANT too), HP C (must be checked before -lpthread, which
|
|
||||||
# is present but should not be used directly; and before -mthreads,
|
|
||||||
# because the compiler interprets this as "-mt" + "-hreads")
|
|
||||||
# -mthreads: Mingw32/gcc, Lynx/gcc
|
|
||||||
# pthread: Linux, etcetera
|
|
||||||
# --thread-safe: KAI C++
|
|
||||||
# pthread-config: use pthread-config program (for GNU Pth library)
|
|
||||||
|
|
||||||
case $host_os in
|
|
||||||
|
|
||||||
freebsd*)
|
|
||||||
|
|
||||||
# -kthread: FreeBSD kernel threads (preferred to -pthread since SMP-able)
|
|
||||||
# lthread: LinuxThreads port on FreeBSD (also preferred to -pthread)
|
|
||||||
|
|
||||||
ax_pthread_flags="-kthread lthread $ax_pthread_flags"
|
|
||||||
;;
|
|
||||||
|
|
||||||
hpux*)
|
|
||||||
|
|
||||||
# From the cc(1) man page: "[-mt] Sets various -D flags to enable
|
|
||||||
# multi-threading and also sets -lpthread."
|
|
||||||
|
|
||||||
ax_pthread_flags="-mt -pthread pthread $ax_pthread_flags"
|
|
||||||
;;
|
|
||||||
|
|
||||||
openedition*)
|
|
||||||
|
|
||||||
# IBM z/OS requires a feature-test macro to be defined in order to
|
|
||||||
# enable POSIX threads at all, so give the user a hint if this is
|
|
||||||
# not set. (We don't define these ourselves, as they can affect
|
|
||||||
# other portions of the system API in unpredictable ways.)
|
|
||||||
|
|
||||||
AC_EGREP_CPP([AX_PTHREAD_ZOS_MISSING],
|
|
||||||
[
|
|
||||||
# if !defined(_OPEN_THREADS) && !defined(_UNIX03_THREADS)
|
|
||||||
AX_PTHREAD_ZOS_MISSING
|
|
||||||
# endif
|
|
||||||
],
|
|
||||||
[AC_MSG_WARN([IBM z/OS requires -D_OPEN_THREADS or -D_UNIX03_THREADS to enable pthreads support.])])
|
|
||||||
;;
|
|
||||||
|
|
||||||
solaris*)
|
|
||||||
|
|
||||||
# On Solaris (at least, for some versions), libc contains stubbed
|
|
||||||
# (non-functional) versions of the pthreads routines, so link-based
|
|
||||||
# tests will erroneously succeed. (N.B.: The stubs are missing
|
|
||||||
# pthread_cleanup_push, or rather a function called by this macro,
|
|
||||||
# so we could check for that, but who knows whether they'll stub
|
|
||||||
# that too in a future libc.) So we'll check first for the
|
|
||||||
# standard Solaris way of linking pthreads (-mt -lpthread).
|
|
||||||
|
|
||||||
ax_pthread_flags="-mt,pthread pthread $ax_pthread_flags"
|
|
||||||
;;
|
|
||||||
esac
|
|
||||||
|
|
||||||
# GCC generally uses -pthread, or -pthreads on some platforms (e.g. SPARC)
|
|
||||||
|
|
||||||
AS_IF([test "x$GCC" = "xyes"],
|
|
||||||
[ax_pthread_flags="-pthread -pthreads $ax_pthread_flags"])
|
|
||||||
|
|
||||||
# The presence of a feature test macro requesting re-entrant function
|
|
||||||
# definitions is, on some systems, a strong hint that pthreads support is
|
|
||||||
# correctly enabled
|
|
||||||
|
|
||||||
case $host_os in
|
|
||||||
darwin* | hpux* | linux* | osf* | solaris*)
|
|
||||||
ax_pthread_check_macro="_REENTRANT"
|
|
||||||
;;
|
|
||||||
|
|
||||||
aix* | freebsd*)
|
|
||||||
ax_pthread_check_macro="_THREAD_SAFE"
|
|
||||||
;;
|
|
||||||
|
|
||||||
*)
|
|
||||||
ax_pthread_check_macro="--"
|
|
||||||
;;
|
|
||||||
esac
|
|
||||||
AS_IF([test "x$ax_pthread_check_macro" = "x--"],
|
|
||||||
[ax_pthread_check_cond=0],
|
|
||||||
[ax_pthread_check_cond="!defined($ax_pthread_check_macro)"])
|
|
||||||
|
|
||||||
# Are we compiling with Clang?
|
|
||||||
|
|
||||||
AC_CACHE_CHECK([whether $CC is Clang],
|
|
||||||
[ax_cv_PTHREAD_CLANG],
|
|
||||||
[ax_cv_PTHREAD_CLANG=no
|
|
||||||
# Note that Autoconf sets GCC=yes for Clang as well as GCC
|
|
||||||
if test "x$GCC" = "xyes"; then
|
|
||||||
AC_EGREP_CPP([AX_PTHREAD_CC_IS_CLANG],
|
|
||||||
[/* Note: Clang 2.7 lacks __clang_[a-z]+__ */
|
|
||||||
# if defined(__clang__) && defined(__llvm__)
|
|
||||||
AX_PTHREAD_CC_IS_CLANG
|
|
||||||
# endif
|
|
||||||
],
|
|
||||||
[ax_cv_PTHREAD_CLANG=yes])
|
|
||||||
fi
|
|
||||||
])
|
|
||||||
ax_pthread_clang="$ax_cv_PTHREAD_CLANG"
|
|
||||||
|
|
||||||
ax_pthread_clang_warning=no
|
|
||||||
|
|
||||||
# Clang needs special handling, because older versions handle the -pthread
|
|
||||||
# option in a rather... idiosyncratic way
|
|
||||||
|
|
||||||
if test "x$ax_pthread_clang" = "xyes"; then
|
|
||||||
|
|
||||||
# Clang takes -pthread; it has never supported any other flag
|
|
||||||
|
|
||||||
# (Note 1: This will need to be revisited if a system that Clang
|
|
||||||
# supports has POSIX threads in a separate library. This tends not
|
|
||||||
# to be the way of modern systems, but it's conceivable.)
|
|
||||||
|
|
||||||
# (Note 2: On some systems, notably Darwin, -pthread is not needed
|
|
||||||
# to get POSIX threads support; the API is always present and
|
|
||||||
# active. We could reasonably leave PTHREAD_CFLAGS empty. But
|
|
||||||
# -pthread does define _REENTRANT, and while the Darwin headers
|
|
||||||
# ignore this macro, third-party headers might not.)
|
|
||||||
|
|
||||||
PTHREAD_CFLAGS="-pthread"
|
|
||||||
PTHREAD_LIBS=
|
|
||||||
|
|
||||||
ax_pthread_ok=yes
|
|
||||||
|
|
||||||
# However, older versions of Clang make a point of warning the user
|
|
||||||
# that, in an invocation where only linking and no compilation is
|
|
||||||
# taking place, the -pthread option has no effect ("argument unused
|
|
||||||
# during compilation"). They expect -pthread to be passed in only
|
|
||||||
# when source code is being compiled.
|
|
||||||
#
|
|
||||||
# Problem is, this is at odds with the way Automake and most other
|
|
||||||
# C build frameworks function, which is that the same flags used in
|
|
||||||
# compilation (CFLAGS) are also used in linking. Many systems
|
|
||||||
# supported by AX_PTHREAD require exactly this for POSIX threads
|
|
||||||
# support, and in fact it is often not straightforward to specify a
|
|
||||||
# flag that is used only in the compilation phase and not in
|
|
||||||
# linking. Such a scenario is extremely rare in practice.
|
|
||||||
#
|
|
||||||
# Even though use of the -pthread flag in linking would only print
|
|
||||||
# a warning, this can be a nuisance for well-run software projects
|
|
||||||
# that build with -Werror. So if the active version of Clang has
|
|
||||||
# this misfeature, we search for an option to squash it.
|
|
||||||
|
|
||||||
AC_CACHE_CHECK([whether Clang needs flag to prevent "argument unused" warning when linking with -pthread],
|
|
||||||
[ax_cv_PTHREAD_CLANG_NO_WARN_FLAG],
|
|
||||||
[ax_cv_PTHREAD_CLANG_NO_WARN_FLAG=unknown
|
|
||||||
# Create an alternate version of $ac_link that compiles and
|
|
||||||
# links in two steps (.c -> .o, .o -> exe) instead of one
|
|
||||||
# (.c -> exe), because the warning occurs only in the second
|
|
||||||
# step
|
|
||||||
ax_pthread_save_ac_link="$ac_link"
|
|
||||||
ax_pthread_sed='s/conftest\.\$ac_ext/conftest.$ac_objext/g'
|
|
||||||
ax_pthread_link_step=`$as_echo "$ac_link" | sed "$ax_pthread_sed"`
|
|
||||||
ax_pthread_2step_ac_link="($ac_compile) && (echo ==== >&5) && ($ax_pthread_link_step)"
|
|
||||||
ax_pthread_save_CFLAGS="$CFLAGS"
|
|
||||||
for ax_pthread_try in '' -Qunused-arguments -Wno-unused-command-line-argument unknown; do
|
|
||||||
AS_IF([test "x$ax_pthread_try" = "xunknown"], [break])
|
|
||||||
CFLAGS="-Werror -Wunknown-warning-option $ax_pthread_try -pthread $ax_pthread_save_CFLAGS"
|
|
||||||
ac_link="$ax_pthread_save_ac_link"
|
|
||||||
AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
|
|
||||||
[ac_link="$ax_pthread_2step_ac_link"
|
|
||||||
AC_LINK_IFELSE([AC_LANG_SOURCE([[int main(void){return 0;}]])],
|
|
||||||
[break])
|
|
||||||
])
|
|
||||||
done
|
|
||||||
ac_link="$ax_pthread_save_ac_link"
|
|
||||||
CFLAGS="$ax_pthread_save_CFLAGS"
|
|
||||||
AS_IF([test "x$ax_pthread_try" = "x"], [ax_pthread_try=no])
|
|
||||||
ax_cv_PTHREAD_CLANG_NO_WARN_FLAG="$ax_pthread_try"
|
|
||||||
])
|
|
||||||
|
|
||||||
case "$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG" in
|
|
||||||
no | unknown) ;;
|
|
||||||
*) PTHREAD_CFLAGS="$ax_cv_PTHREAD_CLANG_NO_WARN_FLAG $PTHREAD_CFLAGS" ;;
|
|
||||||
esac
|
|
||||||
|
|
||||||
fi # $ax_pthread_clang = yes
|
|
||||||
|
|
||||||
if test "x$ax_pthread_ok" = "xno"; then
|
|
||||||
for ax_pthread_try_flag in $ax_pthread_flags; do
|
|
||||||
|
|
||||||
case $ax_pthread_try_flag in
|
|
||||||
none)
|
|
||||||
AC_MSG_CHECKING([whether pthreads work without any flags])
|
|
||||||
;;
|
|
||||||
|
|
||||||
-mt,pthread)
|
|
||||||
AC_MSG_CHECKING([whether pthreads work with -mt -lpthread])
|
|
||||||
PTHREAD_CFLAGS="-mt"
|
|
||||||
PTHREAD_LIBS="-lpthread"
|
|
||||||
;;
|
|
||||||
|
|
||||||
-*)
|
|
||||||
AC_MSG_CHECKING([whether pthreads work with $ax_pthread_try_flag])
|
|
||||||
PTHREAD_CFLAGS="$ax_pthread_try_flag"
|
|
||||||
;;
|
|
||||||
|
|
||||||
pthread-config)
|
|
||||||
AC_CHECK_PROG([ax_pthread_config], [pthread-config], [yes], [no])
|
|
||||||
AS_IF([test "x$ax_pthread_config" = "xno"], [continue])
|
|
||||||
PTHREAD_CFLAGS="`pthread-config --cflags`"
|
|
||||||
PTHREAD_LIBS="`pthread-config --ldflags` `pthread-config --libs`"
|
|
||||||
;;
|
|
||||||
|
|
||||||
*)
|
|
||||||
AC_MSG_CHECKING([for the pthreads library -l$ax_pthread_try_flag])
|
|
||||||
PTHREAD_LIBS="-l$ax_pthread_try_flag"
|
|
||||||
;;
|
|
||||||
esac
|
|
||||||
|
|
||||||
ax_pthread_save_CFLAGS="$CFLAGS"
|
|
||||||
ax_pthread_save_LIBS="$LIBS"
|
|
||||||
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
|
|
||||||
LIBS="$PTHREAD_LIBS $LIBS"
|
|
||||||
|
|
||||||
# Check for various functions. We must include pthread.h,
|
|
||||||
# since some functions may be macros. (On the Sequent, we
|
|
||||||
# need a special flag -Kthread to make this header compile.)
|
|
||||||
# We check for pthread_join because it is in -lpthread on IRIX
|
|
||||||
# while pthread_create is in libc. We check for pthread_attr_init
|
|
||||||
# due to DEC craziness with -lpthreads. We check for
|
|
||||||
# pthread_cleanup_push because it is one of the few pthread
|
|
||||||
# functions on Solaris that doesn't have a non-functional libc stub.
|
|
||||||
# We try pthread_create on general principles.
|
|
||||||
|
|
||||||
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>
|
|
||||||
# if $ax_pthread_check_cond
|
|
||||||
# error "$ax_pthread_check_macro must be defined"
|
|
||||||
# endif
|
|
||||||
static void routine(void *a) { a = 0; }
|
|
||||||
static void *start_routine(void *a) { return a; }],
|
|
||||||
[pthread_t th; pthread_attr_t attr;
|
|
||||||
pthread_create(&th, 0, start_routine, 0);
|
|
||||||
pthread_join(th, 0);
|
|
||||||
pthread_attr_init(&attr);
|
|
||||||
pthread_cleanup_push(routine, 0);
|
|
||||||
pthread_cleanup_pop(0) /* ; */])],
|
|
||||||
[ax_pthread_ok=yes],
|
|
||||||
[])
|
|
||||||
|
|
||||||
CFLAGS="$ax_pthread_save_CFLAGS"
|
|
||||||
LIBS="$ax_pthread_save_LIBS"
|
|
||||||
|
|
||||||
AC_MSG_RESULT([$ax_pthread_ok])
|
|
||||||
AS_IF([test "x$ax_pthread_ok" = "xyes"], [break])
|
|
||||||
|
|
||||||
PTHREAD_LIBS=""
|
|
||||||
PTHREAD_CFLAGS=""
|
|
||||||
done
|
|
||||||
fi
|
|
||||||
|
|
||||||
# Various other checks:
|
|
||||||
if test "x$ax_pthread_ok" = "xyes"; then
|
|
||||||
ax_pthread_save_CFLAGS="$CFLAGS"
|
|
||||||
ax_pthread_save_LIBS="$LIBS"
|
|
||||||
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
|
|
||||||
LIBS="$PTHREAD_LIBS $LIBS"
|
|
||||||
|
|
||||||
# Detect AIX lossage: JOINABLE attribute is called UNDETACHED.
|
|
||||||
AC_CACHE_CHECK([for joinable pthread attribute],
|
|
||||||
[ax_cv_PTHREAD_JOINABLE_ATTR],
|
|
||||||
[ax_cv_PTHREAD_JOINABLE_ATTR=unknown
|
|
||||||
for ax_pthread_attr in PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED; do
|
|
||||||
AC_LINK_IFELSE([AC_LANG_PROGRAM([#include <pthread.h>],
|
|
||||||
[int attr = $ax_pthread_attr; return attr /* ; */])],
|
|
||||||
[ax_cv_PTHREAD_JOINABLE_ATTR=$ax_pthread_attr; break],
|
|
||||||
[])
|
|
||||||
done
|
|
||||||
])
|
|
||||||
AS_IF([test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xunknown" && \
|
|
||||||
test "x$ax_cv_PTHREAD_JOINABLE_ATTR" != "xPTHREAD_CREATE_JOINABLE" && \
|
|
||||||
test "x$ax_pthread_joinable_attr_defined" != "xyes"],
|
|
||||||
[AC_DEFINE_UNQUOTED([PTHREAD_CREATE_JOINABLE],
|
|
||||||
[$ax_cv_PTHREAD_JOINABLE_ATTR],
|
|
||||||
[Define to necessary symbol if this constant
|
|
||||||
uses a non-standard name on your system.])
|
|
||||||
ax_pthread_joinable_attr_defined=yes
|
|
||||||
])
|
|
||||||
|
|
||||||
AC_CACHE_CHECK([whether more special flags are required for pthreads],
|
|
||||||
[ax_cv_PTHREAD_SPECIAL_FLAGS],
|
|
||||||
[ax_cv_PTHREAD_SPECIAL_FLAGS=no
|
|
||||||
case $host_os in
|
|
||||||
solaris*)
|
|
||||||
ax_cv_PTHREAD_SPECIAL_FLAGS="-D_POSIX_PTHREAD_SEMANTICS"
|
|
||||||
;;
|
|
||||||
esac
|
|
||||||
])
|
|
||||||
AS_IF([test "x$ax_cv_PTHREAD_SPECIAL_FLAGS" != "xno" && \
|
|
||||||
test "x$ax_pthread_special_flags_added" != "xyes"],
|
|
||||||
[PTHREAD_CFLAGS="$ax_cv_PTHREAD_SPECIAL_FLAGS $PTHREAD_CFLAGS"
|
|
||||||
ax_pthread_special_flags_added=yes])
|
|
||||||
|
|
||||||
AC_CACHE_CHECK([for PTHREAD_PRIO_INHERIT],
|
|
||||||
[ax_cv_PTHREAD_PRIO_INHERIT],
|
|
||||||
[AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <pthread.h>]],
|
|
||||||
[[int i = PTHREAD_PRIO_INHERIT;]])],
|
|
||||||
[ax_cv_PTHREAD_PRIO_INHERIT=yes],
|
|
||||||
[ax_cv_PTHREAD_PRIO_INHERIT=no])
|
|
||||||
])
|
|
||||||
AS_IF([test "x$ax_cv_PTHREAD_PRIO_INHERIT" = "xyes" && \
|
|
||||||
test "x$ax_pthread_prio_inherit_defined" != "xyes"],
|
|
||||||
[AC_DEFINE([HAVE_PTHREAD_PRIO_INHERIT], [1], [Have PTHREAD_PRIO_INHERIT.])
|
|
||||||
ax_pthread_prio_inherit_defined=yes
|
|
||||||
])
|
|
||||||
|
|
||||||
CFLAGS="$ax_pthread_save_CFLAGS"
|
|
||||||
LIBS="$ax_pthread_save_LIBS"
|
|
||||||
|
|
||||||
# More AIX lossage: compile with *_r variant
|
|
||||||
if test "x$GCC" != "xyes"; then
|
|
||||||
case $host_os in
|
|
||||||
aix*)
|
|
||||||
AS_CASE(["x/$CC"],
|
|
||||||
[x*/c89|x*/c89_128|x*/c99|x*/c99_128|x*/cc|x*/cc128|x*/xlc|x*/xlc_v6|x*/xlc128|x*/xlc128_v6],
|
|
||||||
[#handle absolute path differently from PATH based program lookup
|
|
||||||
AS_CASE(["x$CC"],
|
|
||||||
[x/*],
|
|
||||||
[AS_IF([AS_EXECUTABLE_P([${CC}_r])],[PTHREAD_CC="${CC}_r"])],
|
|
||||||
[AC_CHECK_PROGS([PTHREAD_CC],[${CC}_r],[$CC])])])
|
|
||||||
;;
|
|
||||||
esac
|
|
||||||
fi
|
|
||||||
fi
|
|
||||||
|
|
||||||
test -n "$PTHREAD_CC" || PTHREAD_CC="$CC"
|
|
||||||
|
|
||||||
AC_SUBST([PTHREAD_LIBS])
|
|
||||||
AC_SUBST([PTHREAD_CFLAGS])
|
|
||||||
AC_SUBST([PTHREAD_CC])
|
|
||||||
|
|
||||||
# Finally, execute ACTION-IF-FOUND/ACTION-IF-NOT-FOUND:
|
|
||||||
if test "x$ax_pthread_ok" = "xyes"; then
|
|
||||||
ifelse([$1],,[AC_DEFINE([HAVE_PTHREAD],[1],[Define if you have POSIX threads libraries and header files.])],[$1])
|
|
||||||
:
|
|
||||||
else
|
|
||||||
ax_pthread_ok=no
|
|
||||||
$2
|
|
||||||
fi
|
|
||||||
AC_LANG_POP
|
|
||||||
])dnl AX_PTHREAD
|
|
||||||
@ -1,37 +0,0 @@
|
|||||||
# ===========================================================================
|
|
||||||
# http://www.gnu.org/software/autoconf-archive/ax_require_defined.html
|
|
||||||
# ===========================================================================
|
|
||||||
#
|
|
||||||
# SYNOPSIS
|
|
||||||
#
|
|
||||||
# AX_REQUIRE_DEFINED(MACRO)
|
|
||||||
#
|
|
||||||
# DESCRIPTION
|
|
||||||
#
|
|
||||||
# AX_REQUIRE_DEFINED is a simple helper for making sure other macros have
|
|
||||||
# been defined and thus are available for use. This avoids random issues
|
|
||||||
# where a macro isn't expanded. Instead the configure script emits a
|
|
||||||
# non-fatal:
|
|
||||||
#
|
|
||||||
# ./configure: line 1673: AX_CFLAGS_WARN_ALL: command not found
|
|
||||||
#
|
|
||||||
# It's like AC_REQUIRE except it doesn't expand the required macro.
|
|
||||||
#
|
|
||||||
# Here's an example:
|
|
||||||
#
|
|
||||||
# AX_REQUIRE_DEFINED([AX_CHECK_LINK_FLAG])
|
|
||||||
#
|
|
||||||
# LICENSE
|
|
||||||
#
|
|
||||||
# Copyright (c) 2014 Mike Frysinger <vapier@gentoo.org>
|
|
||||||
#
|
|
||||||
# Copying and distribution of this file, with or without modification, are
|
|
||||||
# permitted in any medium without royalty provided the copyright notice
|
|
||||||
# and this notice are preserved. This file is offered as-is, without any
|
|
||||||
# warranty.
|
|
||||||
|
|
||||||
#serial 1
|
|
||||||
|
|
||||||
AC_DEFUN([AX_REQUIRE_DEFINED], [dnl
|
|
||||||
m4_ifndef([$1], [m4_fatal([macro ]$1[ is not defined; is a m4 file missing?])])
|
|
||||||
])dnl AX_REQUIRE_DEFINED
|
|
||||||
Loading…
Reference in New Issue
Block a user