configure.ac cleanup, move to ax_append_*_flags
This commit is contained in:
parent
530695c17b
commit
a5afdfab99
263
configure.ac
263
configure.ac
@ -4,119 +4,113 @@ AC_INIT([libgim], [0.1.0], [danny@nerdcruft.net])
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## debugging is enabled.
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: ${CXXFLAGS=""}
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AC_CANONICAL_HOST
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AC_PROG_CXX
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AC_LANG([C++])
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LT_INIT
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AM_PROG_CC_C_O
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###############################################################################
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## Build environment discovery
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AC_CONFIG_AUX_DIR([build-aux])
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AC_CONFIG_MACRO_DIR([m4])
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AC_CONFIG_HEADERS([config.h])
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AM_INIT_AUTOMAKE([1.11 silent-rules])
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AC_USE_SYSTEM_EXTENSIONS
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AC_CANONICAL_HOST
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AC_LANG([C++])
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AC_PROG_CXX
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AC_PROG_CXXCPP
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AX_CXX_COMPILE_STDCXX_11([noext])
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LT_INIT
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AM_INIT_AUTOMAKE([1.14 dist-bzip2 dist-xz foreign subdir-objects])
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AM_SILENT_RULES([yes])
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AC_CONFIG_HEADERS([config.h])
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AX_APPEND_FLAG([-include config.h])
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###############################################################################
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## Major compilation options
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AC_ARG_ENABLE([debugging],
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[AS_HELP_STRING([--enable-debugging],
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[enables developer debugging support])],
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[ case "${enableval}" in
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yes) ac_cv_debugging=yes ;;
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no) ac_cv_debugging=no ;;
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*) AC_MSG_ERROR([bad value for --enable-debugging=[yes|no]]) ;;
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esac ],
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[ac_cv_debugging=no])
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[AS_HELP_STRING([--enable-debugging], [enables developer debugging support])]
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)
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AC_ARG_ENABLE([mudflap],
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[AS_HELP_STRING([--enable-mudflap],
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[enable mudflap runtime debugging])],
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[ case "${enableval}" in
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yes) ac_cv_mudflap=yes ;;
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no) ac_cv_mudflap=no ;;
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*) AC_MSG_ERROR([bad value for --enable-mudflap[yes|no]]) ;;
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esac ],
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[ac_cv_mudflap=no])
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[AS_HELP_STRING([--enable-mudflap], [enable mudflap runtime debugging])]
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)
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##
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###############################################################################
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## Warnings
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WARNING_FLAGS=""
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AS_CXX_COMPILER_FLAG([-Wall], [WARNING_FLAGS="$WARNING_FLAGS -Wall"])
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AS_CXX_COMPILER_FLAG([-Wextra], [WARNING_FLAGS="$WARNING_FLAGS -Wextra"])
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AS_CXX_COMPILER_FLAG([-Wno-parentheses], [WARNING_FLAGS="$WARNING_FLAGS -Wno-parentheses"])
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AX_APPEND_COMPILE_FLAGS([-Wall])
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AX_APPEND_COMPILE_FLAGS([-Wextra])
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AX_APPEND_COMPILE_FLAGS([-Wno-parentheses])
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AX_APPEND_COMPILE_FLAGS([-Wpointer-arith])
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AX_APPEND_COMPILE_FLAGS([-Wcast-qual])
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AX_APPEND_COMPILE_FLAGS([-Wcast-align])
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AX_APPEND_COMPILE_FLAGS([-Wsign-compare])
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AX_APPEND_COMPILE_FLAGS([-Wsign-conversion])
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AX_APPEND_COMPILE_FLAGS([-Wtype-limits])
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AX_APPEND_COMPILE_FLAGS([-Wfloat-equal])
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AX_APPEND_COMPILE_FLAGS([-Wunused-parameter])
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AX_APPEND_COMPILE_FLAGS([-Wunused-but-set-variable])
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AX_APPEND_COMPILE_FLAGS([-Wshadwo])
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AX_APPEND_COMPILE_FLAGS([-Wredundant-decls])
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AS_CXX_COMPILER_FLAG([-Wpointer-arith], [WARNING_FLAGS="$WARNING_FLAGS -Wpointer-arith"])
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AS_CXX_COMPILER_FLAG([-Wcast-qual], [WARNING_FLAGS="$WARNING_FLAGS -Wcast-qual"])
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AS_CXX_COMPILER_FLAG([-Wcast-align], [WARNING_FLAGS="$WARNING_FLAGS -Wcast-align"])
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AX_APPEND_COMPILE_FLAGS([-pedantic])
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AS_CXX_COMPILER_FLAG([-Wsign-compare], [WARNING_FLAGS="$WARNING_FLAGS -Wsign-compare"])
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AS_CXX_COMPILER_FLAG([-Wsign-conversion], [WARNING_FLAGS="$WARNING_FLAGS -Wsign-conversion"])
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AS_CXX_COMPILER_FLAG([-Wtype-limits], [WARNING_FLAGS="$WARNING_FLAGS -Wtype-limits"])
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AS_CXX_COMPILER_FLAG([-Wfloat-equal], [WARNING_FLAGS="$WARNING_FLAGS -Wfloat-equal"])
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######################################################################
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## Platform compilation helpers
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AS_CXX_COMPILER_FLAG([-Wswitch-default], [COMMON_CFLAGS="$COMMON_CFLAGS -Wswitch-default"])
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#AS_CXX_COMPILER_FLAG([-Wswitch-enum], [COMMON_CFLAGS="$COMMON_CFLAGS -Wswitch-enum"])
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AX_APPEND_COMPILE_FLAGS([-fno-common])
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AX_APPEND_COMPILE_FLAGS([-fno-nonansi-builtins])
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AX_APPEND_COMPILE_FLAGS([-fno-deduce-init-list])
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#AS_CXX_COMPILER_FLAG([-Wzero-as-null-pointer-constant], [WARNING_FLAGS="$WARNING_FLAGS -Wzero-as-null-pointer-constant"])
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AS_CXX_COMPILER_FLAG([-Wunused-parameter], [WARNING_FLAGS="$WARNING_FLAGS -Wunused-parameter"])
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AS_CXX_COMPILER_FLAG([-Wunused-but-set-variable], [WARNING_FLAGS="$WARNING_FLAGS -Wunused-parameter"])
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AS_CXX_COMPILER_FLAG([-Wshadow], [WARNING_FLAGS="$WARNING_FLAGS -Wshadow"])
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AS_CXX_COMPILER_FLAG([-Wredundant-decls], [WARNING_FLAGS="$WARNING_FLAGS -Wredundant-decls"])
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AS_CXX_COMPILER_FLAG([-pedantic], [COMMON_CFLAGS="$COMMON_CFLAGS -pedantic"])
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##
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## Compilation
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AS_CXX_COMPILER_FLAG([-fno-common ], [COMMON_CFLAGS="$COMMON_CFLAGS -fno-common "])
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AS_CXX_COMPILER_FLAG([-fno-nonansi-builtins],
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[COMMON_CFLAGS="$COMMON_CFLAGS -fno-nonansi-builtins"])
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##AS_CXX_COMPILER_FLAG([-fno-rtti], [COMMON_CFLAGS="$COMMON_CFLAGS -fno-rtti"])
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AS_CXX_COMPILER_FLAG([-fno-deduce-init-list], [COMMON_CFLAGS="$COMMON_CFLAGS -fno-deduce-init-list "])
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##
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###############################################################################
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## Compiler features
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AC_C_CONST
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AC_C_RESTRICT
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AC_C_INLINE
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##
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([struct A { virtual void C (void) = 0; };
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struct B : A { void C (void) override; }; ],
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[])],
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[], [AC_DEFINE([override], [], [Pretend about override keyword support])])
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AC_COMPILE_IFELSE([AC_LANG_PROGRAM([struct A final { }; ],
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[])],
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[], [AC_DEFINE([final], [], [Pretend about final keyword support])])
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###############################################################################
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## Architecture features
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AC_C_BIGENDIAN
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##
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###############################################################################
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## Useful headers or platform features
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AC_TYPE_SIZE_T
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AC_TYPE_SSIZE_T
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##
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## platform features
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#AC_DEFINE([_GNU_SOURCE], [], [Description])
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###############################################################################
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## Platform features
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case $host_os in
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mingw32)
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AS_CASE([$host_os],
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[mingw32], [
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AM_CONDITIONAL([PLATFORM_WIN32], [true])
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AM_CONDITIONAL([PLATFORM_LINUX], [false])
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AC_CHECK_HEADERS([winsock2.h ws2tcpip.h])
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AC_SUBST([NET_LIBS], [-lws2_32])
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],
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#COMMON_LDFLAGS="$COMMON_LDFLAGS -ldbghelp"
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;;
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linux-gnu)
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[linux-gnu], [
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AM_CONDITIONAL([PLATFORM_WIN32], [false])
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AM_CONDITIONAL([PLATFORM_LINUX], [true])
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;;
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],
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*)
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AC_ERROR([Unknown host_os])
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;;
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esac
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[AC_ERROR([Unknown host_os])]
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)
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AC_FUNC_MMAP
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@ -128,72 +122,61 @@ AC_CHECK_HEADER([execinfo.h], [break])
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AM_CONDITIONAL([HAVE_EXECINFO], [test x$ac_cv_header_execinfo_h = "xyes"])
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AC_SEARCH_LIBS([clock_gettime], [rt])
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if [[ "x$ac_cv_search_clock_gettime" == "x-*" ]]; then
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COMMON_LDFLAGS="$COMMON_LDFLAGS $ac_cv_search_clock_gettime"
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fi
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AS_IF([test "x$ac_cv_search_clock_gettime" == "x-*"], [
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AX_APPEND_LINK_FLAGS([$ac_cv_search_clock_gettime])
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])
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##
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###############################################################################
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## Debug features
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if test "x$ac_cv_debugging" = "xyes"; then
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COMMON_CFLAGS="$COMMON_CFLAGS -O0"
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if test "x$ac_cv_mudflap" = "xyes"; then
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AS_CXX_COMPILER_FLAG([-fmudflapth], [
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COMMON_CFLAGS="$COMMON_CFLAGS -fmudflapth";
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COMMON_LDFLAGS="$COMMON_LDFLAGS -lmudflapth"
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])
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fi
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AS_IF([test "x$enable_debugging" = "xyes"], [
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AS_IF([test "x$enable_mudflap" = "xyes"], [
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AX_APPEND_COMPILE_FLAGS([-fmudflapth])
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AX_APPEND_LINK_FLAGS([-lmudflapth])
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])
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AC_DEFINE([ENABLE_DEBUGGING], [], [Description])
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AC_DEFINE([_GLIBCXX_DEBUG], [], [Description])
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AX_APPEND_COMPILE_FLAGS([-ggdb])
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else
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## Use 'none' LTO partitioning to avoid discarded section linker errors
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## against boost
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COMMON_CFLAGS="$COMMON_CFLAGS -O2 -flto=8 -flto-partition=none"
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COMMON_LDFLAGS="$COMMON_LDFLAGS -flto=8 -flto-partition=none"
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fi
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AC_DEFINE([ENABLE_DEBUGGING], [], [Debugging support enabled])
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AC_DEFINE([_GLIBCXX_DEBUG], [], [Use glibcxx debugging mode])
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case $host_os in
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mingw32)
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COMMON_CFLAGS="$COMMON_CFLAGS -gstabs"
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;;
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AX_APPEND_COMPILE_FLAGS([-O0])
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], [
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AX_APPEND_COMPILE_FLAGS([-02])
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AX_APPEND_COMPILE_FLAGS([-flto=8])
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AX_APPEND_COMPILE_FLAGS([-flto-partition=none])
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linux-gnu)
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COMMON_CFLAGS="$COMMON_CFLAGS -g"
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AS_CXX_COMPILER_FLAG([-ggdb], [COMMON_CFLAGS="$COMMON_CFLAGS -ggdb"])
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;;
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AX_APPEND_LINK_FLAGS([-flto=8])
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AX_APPEND_LINK_FLAGS([-flto-partition=none])
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AX_APPEND_LINK_FLAGS([-fwhole-program])
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])
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*)
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AC_ERROR([Unknown host_os])
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;;
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esac
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AS_CASE([$host_os],
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[mingw32], [
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AX_APPEND_COMPILE_FLAGS([-gstabs])
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case $host_cpu in
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x86_64)
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OPTIMISATION_FLAGS="$OPTIMISATION_FLAGS -mtune=generic"
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;;
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## HACK: Stop multiple defines from boost exception rethrowers
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## terminating the build. Works around boost bug #4258.
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AX_APPEND_COMPILE_FLAGS([-Wl,--allow-multiple-definition])
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],
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i686)
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OPTIMISATION_FLAGS="$OPTIMISATION_FLAGS -march=prescott -mtune=generic -mfpmath=sse"
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;;
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[linux-gnu], [
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AX_APPEND_COMPILE_FLAGS([-g])
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AX_APPEND_COMPILE_FLAGS([-ggdb])
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],
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*)
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AC_MSG_ERROR([Unknown target CPU])
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;;
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esac
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[AC_MSG_WARN([Unknown host_os])]
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)
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##
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###############################################################################
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## Documentation
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##
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###############################################################################
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## Required packages
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CHECK_RAGEL([ip.cpp])
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AX_BOOST_BASE([1.49], [], [AC_MSG_ERROR([Boost version >= 1.42 required])])
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AX_BOOST_BASE([1.52], [], [AC_MSG_ERROR([Boost version >= 1.52 required])])
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AC_SUBST(BOOST_CPPFLAGS)
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AC_SUBST(BOOST_LDFLAGS)
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@ -204,21 +187,39 @@ AX_BOOST_SYSTEM
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AX_BOOST_FILESYSTEM
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AC_SUBST(BOOST_FILESYSTEM_LIB)
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if test "x$ax_cv_boost_filesystem" != "xyes"; then
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AS_IF([text "x$ax_cv_boost_filesystem" != "xyes"], [
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AC_MSG_ERROR("boost-filesystem is a hard requirement")
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fi
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])
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###############################################################################
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## Optional packages
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PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.0])
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AC_SUBST(ZLIB_CFLAGS)
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AC_SUBST(ZLIB_LIBS)
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###############################################################################
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## Performance and build optimisations
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AS_CASE([$host_cpu],
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[x86_64], [
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AX_APPEND_COMPILE_FLAGS([-mtune=generic])
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],
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[i686], [
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AX_APPEND_COMPILE_FLAGS([-march=prescott])
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AX_APPEND_COMPILE_FLAGS([-mtune=generic])
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AX_APPEND_COMPILE_FLAGS([-mfpmath=sse])
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],
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[AC_MSG_WARN([unknown host_cpu])]
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)
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AX_APPEND_COMPILE_FLAGS([-pipe])
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###############################################################################
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## Output
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COMMON_CXXFLAGS="-std=c++0x -pipe -include config.h $WARNING_FLAGS $OPTIMISATION_FLAGS $COMMON_CFLAGS"
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COMMON_LDFLAGS="$COMMON_LDFLAGS "
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AC_SUBST(COMMON_CXXFLAGS)
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AC_SUBST(COMMON_LDFLAGS)
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AC_CONFIG_FILES([
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Doxyfile
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Makefile
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@ -1,64 +0,0 @@
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dnl as-compiler-flag.m4 0.1.0
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dnl autostars m4 macro for detection of compiler flags
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dnl David Schleef <ds@schleef.org>
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dnl Tim-Philipp Müller <tim centricular net>
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dnl AS_COMPILER_FLAG(CFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
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dnl Tries to compile with the given CFLAGS.
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dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
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dnl and ACTION-IF-NOT-ACCEPTED otherwise.
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AC_DEFUN([AS_COMPILER_FLAG],
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[
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AC_MSG_CHECKING([to see if compiler understands $1])
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS $1"
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AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no])
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CFLAGS="$save_CFLAGS"
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if test "X$flag_ok" = Xyes ; then
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$2
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true
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else
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$3
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true
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fi
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AC_MSG_RESULT([$flag_ok])
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])
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dnl AS_CXX_COMPILER_FLAG(CPPFLAGS, ACTION-IF-ACCEPTED, [ACTION-IF-NOT-ACCEPTED])
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dnl Tries to compile with the given CPPFLAGS.
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dnl Runs ACTION-IF-ACCEPTED if the compiler can compile with the flags,
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dnl and ACTION-IF-NOT-ACCEPTED otherwise.
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AC_DEFUN([AS_CXX_COMPILER_FLAG],
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[
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AC_REQUIRE([AC_PROG_CXX])
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AC_MSG_CHECKING([to see if c++ compiler understands $1])
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save_CPPFLAGS="$CPPFLAGS"
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CPPFLAGS="$CPPFLAGS $1"
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AC_LANG_PUSH(C++)
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AC_TRY_COMPILE([ ], [], [flag_ok=yes], [flag_ok=no])
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CPPFLAGS="$save_CPPFLAGS"
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if test "X$flag_ok" = Xyes ; then
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$2
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true
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else
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$3
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true
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fi
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AC_LANG_POP(C++)
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AC_MSG_RESULT([$flag_ok])
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])
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65
m4/ax_append_compile_flags.m4
Normal file
65
m4/ax_append_compile_flags.m4
Normal file
@ -0,0 +1,65 @@
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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])
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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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# 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
|
||||
# Free Software Foundation, either version 3 of the License, or (at your
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||||
# option) any later version.
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#
|
||||
# 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 3
|
||||
|
||||
AC_DEFUN([AX_APPEND_COMPILE_FLAGS],
|
||||
[AC_REQUIRE([AX_CHECK_COMPILE_FLAG])
|
||||
AC_REQUIRE([AX_APPEND_FLAG])
|
||||
for flag in $1; do
|
||||
AX_CHECK_COMPILE_FLAG([$flag], [AX_APPEND_FLAG([$flag], [$2])], [], [$3])
|
||||
done
|
||||
])dnl AX_APPEND_COMPILE_FLAGS
|
||||
69
m4/ax_append_flag.m4
Normal file
69
m4/ax_append_flag.m4
Normal file
@ -0,0 +1,69 @@
|
||||
# ===========================================================================
|
||||
# http://www.gnu.org/software/autoconf-archive/ax_append_flag.html
|
||||
# ===========================================================================
|
||||
#
|
||||
# SYNOPSIS
|
||||
#
|
||||
# AX_APPEND_FLAG(FLAG, [FLAGS-VARIABLE])
|
||||
#
|
||||
# DESCRIPTION
|
||||
#
|
||||
# FLAG is appended to the FLAGS-VARIABLE shell variable, with a space
|
||||
# added in between.
|
||||
#
|
||||
# If FLAGS-VARIABLE is not specified, the current language's flags (e.g.
|
||||
# CFLAGS) is used. FLAGS-VARIABLE is not changed if it already contains
|
||||
# FLAG. If FLAGS-VARIABLE is unset in the shell, it is set to exactly
|
||||
# FLAG.
|
||||
#
|
||||
# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION.
|
||||
#
|
||||
# LICENSE
|
||||
#
|
||||
# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
|
||||
# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
|
||||
#
|
||||
# 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 2
|
||||
|
||||
AC_DEFUN([AX_APPEND_FLAG],
|
||||
[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
|
||||
AS_VAR_PUSHDEF([FLAGS], [m4_default($2,_AC_LANG_PREFIX[FLAGS])])dnl
|
||||
AS_VAR_SET_IF(FLAGS,
|
||||
[case " AS_VAR_GET(FLAGS) " in
|
||||
*" $1 "*)
|
||||
AC_RUN_LOG([: FLAGS already contains $1])
|
||||
;;
|
||||
*)
|
||||
AC_RUN_LOG([: FLAGS="$FLAGS $1"])
|
||||
AS_VAR_SET(FLAGS, ["AS_VAR_GET(FLAGS) $1"])
|
||||
;;
|
||||
esac],
|
||||
[AS_VAR_SET(FLAGS,["$1"])])
|
||||
AS_VAR_POPDEF([FLAGS])dnl
|
||||
])dnl AX_APPEND_FLAG
|
||||
63
m4/ax_append_link_flags.m4
Normal file
63
m4/ax_append_link_flags.m4
Normal file
@ -0,0 +1,63 @@
|
||||
# ===========================================================================
|
||||
# http://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html
|
||||
# ===========================================================================
|
||||
#
|
||||
# SYNOPSIS
|
||||
#
|
||||
# AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS])
|
||||
#
|
||||
# DESCRIPTION
|
||||
#
|
||||
# For every FLAG1, FLAG2 it is checked whether the linker works with the
|
||||
# flag. If it does, the flag is added FLAGS-VARIABLE
|
||||
#
|
||||
# If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is
|
||||
# used. During the check the flag is always added to the linker's flags.
|
||||
#
|
||||
# If EXTRA-FLAGS is defined, it is added to the linker's default flags
|
||||
# when the check is done. The check is thus made with the flags: "LDFLAGS
|
||||
# EXTRA-FLAGS FLAG". This can for example be used to force the linker to
|
||||
# issue an error when a bad flag is given.
|
||||
#
|
||||
# NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG.
|
||||
# Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS.
|
||||
#
|
||||
# LICENSE
|
||||
#
|
||||
# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
|
||||
#
|
||||
# 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 3
|
||||
|
||||
AC_DEFUN([AX_APPEND_LINK_FLAGS],
|
||||
[AC_REQUIRE([AX_CHECK_LINK_FLAG])
|
||||
AC_REQUIRE([AX_APPEND_FLAG])
|
||||
for flag in $1; do
|
||||
AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3])
|
||||
done
|
||||
])dnl AX_APPEND_LINK_FLAGS
|
||||
107
m4/ax_cxx_compile_stdcxx_11.m4
Normal file
107
m4/ax_cxx_compile_stdcxx_11.m4
Normal file
@ -0,0 +1,107 @@
|
||||
# ============================================================================
|
||||
# http://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_11.html
|
||||
# ============================================================================
|
||||
#
|
||||
# SYNOPSIS
|
||||
#
|
||||
# AX_CXX_COMPILE_STDCXX_11([ext|noext])
|
||||
#
|
||||
# DESCRIPTION
|
||||
#
|
||||
# Check for baseline language coverage in the compiler for the C++11
|
||||
# standard; if necessary, add switches to CXXFLAGS to enable support.
|
||||
# Errors out if no mode that supports C++11 baseline syntax can be found.
|
||||
# The argument, if specified, indicates whether you insist on an extended
|
||||
# mode (e.g. -std=gnu++11) or a strict conformance mode (e.g. -std=c++11).
|
||||
# If neither is specified, you get whatever works, with preference for an
|
||||
# extended mode.
|
||||
#
|
||||
# LICENSE
|
||||
#
|
||||
# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
|
||||
# Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
|
||||
#
|
||||
# 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
|
||||
|
||||
m4_define([_AX_CXX_COMPILE_STDCXX_11_testbody], [
|
||||
template <typename T>
|
||||
struct check
|
||||
{
|
||||
static_assert(sizeof(int) <= sizeof(T), "not big enough");
|
||||
};
|
||||
|
||||
typedef check<check<bool>> right_angle_brackets;
|
||||
|
||||
int a;
|
||||
decltype(a) b;
|
||||
|
||||
typedef check<int> check_type;
|
||||
check_type c;
|
||||
check_type&& cr = static_cast<check_type&&>(c);
|
||||
])
|
||||
|
||||
AC_DEFUN([AX_CXX_COMPILE_STDCXX_11], [dnl
|
||||
m4_if([$1], [], [],
|
||||
[$1], [ext], [],
|
||||
[$1], [noext], [],
|
||||
[m4_fatal([invalid argument `$1' to AX_CXX_COMPILE_STDCXX_11])])dnl
|
||||
AC_LANG_ASSERT([C++])dnl
|
||||
ac_success=no
|
||||
AC_CACHE_CHECK(whether $CXX supports C++11 features by default,
|
||||
ax_cv_cxx_compile_cxx11,
|
||||
[AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
|
||||
[ax_cv_cxx_compile_cxx11=yes],
|
||||
[ax_cv_cxx_compile_cxx11=no])])
|
||||
if test x$ax_cv_cxx_compile_cxx11 = xyes; then
|
||||
ac_success=yes
|
||||
fi
|
||||
|
||||
m4_if([$1], [noext], [], [dnl
|
||||
if test x$ac_success = xno; then
|
||||
for switch in -std=gnu++11 -std=gnu++0x; do
|
||||
cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch])
|
||||
AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch,
|
||||
$cachevar,
|
||||
[ac_save_CXXFLAGS="$CXXFLAGS"
|
||||
CXXFLAGS="$CXXFLAGS $switch"
|
||||
AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
|
||||
[eval $cachevar=yes],
|
||||
[eval $cachevar=no])
|
||||
CXXFLAGS="$ac_save_CXXFLAGS"])
|
||||
if eval test x\$$cachevar = xyes; then
|
||||
CXXFLAGS="$CXXFLAGS $switch"
|
||||
ac_success=yes
|
||||
break
|
||||
fi
|
||||
done
|
||||
fi])
|
||||
|
||||
m4_if([$1], [ext], [], [dnl
|
||||
if test x$ac_success = xno; then
|
||||
for switch in -std=c++11 -std=c++0x; do
|
||||
cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx11_$switch])
|
||||
AC_CACHE_CHECK(whether $CXX supports C++11 features with $switch,
|
||||
$cachevar,
|
||||
[ac_save_CXXFLAGS="$CXXFLAGS"
|
||||
CXXFLAGS="$CXXFLAGS $switch"
|
||||
AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_11_testbody])],
|
||||
[eval $cachevar=yes],
|
||||
[eval $cachevar=no])
|
||||
CXXFLAGS="$ac_save_CXXFLAGS"])
|
||||
if eval test x\$$cachevar = xyes; then
|
||||
CXXFLAGS="$CXXFLAGS $switch"
|
||||
ac_success=yes
|
||||
break
|
||||
fi
|
||||
done
|
||||
fi])
|
||||
|
||||
if test x$ac_success = xno; then
|
||||
AC_MSG_ERROR([*** A compiler with support for C++11 language features is required.])
|
||||
fi
|
||||
])
|
||||
Loading…
Reference in New Issue
Block a user