262 lines
8.4 KiB
Plaintext
262 lines
8.4 KiB
Plaintext
AC_INIT([libgim], [0.1.0], [danny@nerdcruft.net])
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## Explicitly set an empty CXXFLAGS if not present to prevent AC_PROG_CXX from
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## generating a default -O2. This allows us to manually select -O0 when
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## debugging is enabled.
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: ${CXXFLAGS=""}
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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_REQUIRE_AUX_FILE([tap-driver.sh])
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AC_CONFIG_MACRO_DIR([m4])
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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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###############################################################################
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## Major compilation options
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AC_ARG_ENABLE([debugging],
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[AS_HELP_STRING([--enable-debugging], [enables developer debugging support])]
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)
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AC_ARG_ENABLE([sanitizer], [
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AS_HELP_STRING([--enable-sanitizer], [enable memory sanitizer])
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])
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###############################################################################
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## Warnings
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# Compound warnings
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AX_APPEND_COMPILE_FLAGS([-Wall], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wextra], [], [-Werror])
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# General warnings
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AX_APPEND_COMPILE_FLAGS([-Wcast-align], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wcast-qual], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wfloat-conversion], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wfloat-equal], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wno-aggressive-loop-optimizations], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wnoexcept], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wnon-virtual-dtor], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wno-parentheses], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wpointer-arith], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wredundant-decls], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wshadow], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wsign-compare], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wsign-promo], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wstrict-aliasing], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wstrict-overflow], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wtype-limits], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wunused-but-set-variable], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wunused-parameter], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wuseless-cast], [], [-Werror])
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# Required extensions
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#AX_APPEND_COMPILE_FLAGS([-Wgnu-flexible-array-union-member], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wno-c99-extensions], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wno-gnu-zero-variadic-macro-arguments], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wno-nested-anon-types], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wno-vla-extension], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-Wno-vla], [], [-Werror])
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# Excessive warnings
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#AX_APPEND_COMPILE_FLAGS([-Wunsafe-loop-optimizations], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Winline], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wconversion], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wdouble-promotion], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wold-style-cast], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Woverloaded-virtual], [], [-Werror])
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#AX_APPEND_COMPILE_FLAGS([-Wsign-conversion], [], [-Werror])
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# Strict warnings
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AX_APPEND_COMPILE_FLAGS([-pedantic], [], [-Werror])
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######################################################################
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## Platform compilation helpers
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AX_APPEND_COMPILE_FLAGS([-fno-common], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-fno-nonansi-builtins], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-fno-deduce-init-list], [], [-Werror])
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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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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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## 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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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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[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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[AC_ERROR([Unknown host_os])]
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)
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AC_FUNC_MMAP
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AC_CHECK_FUNC([strndup], [
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AC_DEFINE([HAVE_STRNDUP], [], [strndup appears to be present])
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])
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AC_CHECK_HEADER([execinfo.h], [break])
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AM_CONDITIONAL([HAVE_EXECINFO], [test x$ac_cv_header_execinfo_h = "xyes"])
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AC_SEARCH_LIBS([clock_gettime], [rt])
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AS_IF([test "x$ac_cv_search_clock_gettime" == "x-*"], [
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AX_APPEND_LINK_FLAGS([$ac_cv_search_clock_gettime], [], [-Werror])
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])
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###############################################################################
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## Debug features
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AS_IF([test "x$enable_debugging" = "xyes"], [
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AS_IF([test "x$enable_sanitizer" = "xyes"], [
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AX_APPEND_COMPILE_FLAGS([-fsanitize=address], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-fsanitize=undefined], [], [-Werror])
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AX_APPEND_LINK_FLAGS([-fsanitize=address], [], [-Werror])
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AX_APPEND_LINK_FLAGS([-fsanitize=undefined], [], [-Werror])
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])
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AX_APPEND_COMPILE_FLAGS([-ggdb], [], [-Werror])
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AC_DEFINE([ENABLE_DEBUGGING], [], [Debugging support enabled], [], [-Werror])
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AC_DEFINE([_GLIBCXX_DEBUG], [], [Use glibcxx debugging mode], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-O0], [], [-Werror])
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], [
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AX_APPEND_COMPILE_FLAGS([-O2], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-flto], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-flto-partition=none], [], [-Werror])
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AX_APPEND_LINK_FLAGS([-fuse-linker-plugin], [], [-Werror])
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])
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AS_CASE([$host_os],
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[mingw32], [
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AX_APPEND_COMPILE_FLAGS([-gstabs], [], [-Werror])
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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], [], [-Werror])
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],
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[linux-gnu], [
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AX_APPEND_COMPILE_FLAGS([-g], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-ggdb], [], [-Werror])
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],
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[AC_MSG_WARN([Unknown host_os])]
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)
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###############################################################################
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## Documentation
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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([1.53], [], [AC_MSG_ERROR([Boost version >= 1.53 required])])
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AC_SUBST(BOOST_CPPFLAGS)
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AC_SUBST(BOOST_LDFLAGS)
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# boost-system isn't a hard requirement, it's only really used to fulfill
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# some other dependency I've since forgotten about...
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AX_BOOST_SYSTEM
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AX_BOOST_FILESYSTEM
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AC_SUBST(BOOST_FILESYSTEM_LIB)
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AS_IF([test "x$ax_cv_boost_filesystem" != "xyes"], [
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AC_MSG_ERROR("boost-filesystem is a hard requirement")
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])
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###############################################################################
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## Optional packages
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PKG_CHECK_MODULES([ZLIB], [zlib >= 1.2.0])
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AC_SUBST(ZLIB_CFLAGS)
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AC_SUBST(ZLIB_LIBS)
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###############################################################################
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## Performance and build optimisations
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AS_CASE([$host_cpu],
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[x86_64], [
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AX_APPEND_COMPILE_FLAGS([-mtune=generic], [], [-Werror])
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],
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[i686], [
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AX_APPEND_COMPILE_FLAGS([-march=prescott], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-mtune=generic], [], [-Werror])
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AX_APPEND_COMPILE_FLAGS([-mfpmath=sse], [], [-Werror])
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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], [], [-Werror])
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###############################################################################
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## Output
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# inclusion of config.h has to go after compilation tests otherwise we risk
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# failure on a clean build
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AX_APPEND_FLAG([-include config.h])
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AC_CONFIG_FILES([
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Doxyfile
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Makefile
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test/Makefile
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])
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AC_CONFIG_FILES([test/json.test], [chmod a+x test/json.test])
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AC_OUTPUT
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