mirror of
https://git.kernel.org/pub/scm/bluetooth/bluez.git
synced 2024-11-14 07:44:36 +08:00
10d6d908b5
Currently, there's plenty of unused code in most binaries. Enable -fdata/function-sections, which allows the linker garbage collection to do its job. On a maintainer build, this reduces the (unstriped) binaries from 117 to 114MiB.
142 lines
4.3 KiB
Plaintext
142 lines
4.3 KiB
Plaintext
AC_DEFUN([AC_PROG_CC_PIE], [
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AC_CACHE_CHECK([whether ${CC-cc} accepts -fPIE], ac_cv_prog_cc_pie, [
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echo 'void f(){}' > conftest.c
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if test -z "`${CC-cc} -fPIE -pie -c conftest.c 2>&1`"; then
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ac_cv_prog_cc_pie=yes
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else
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ac_cv_prog_cc_pie=no
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fi
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rm -rf conftest*
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])
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])
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AC_DEFUN([AC_PROG_CC_ASAN], [
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AC_CACHE_CHECK([whether ${CC-cc} accepts -fsanitize=address],
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ac_cv_prog_cc_asan, [
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echo 'void f(){}' > asan.c
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if test -z "`${CC-cc} -fsanitize=address -c asan.c 2>&1`"; then
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ac_cv_prog_cc_asan=yes
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else
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ac_cv_prog_cc_asan=no
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fi
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rm -rf asan*
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])
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])
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AC_DEFUN([AC_PROG_CC_LSAN], [
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AC_CACHE_CHECK([whether ${CC-cc} accepts -fsanitize=leak],
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ac_cv_prog_cc_lsan, [
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echo 'void f(){}' > lsan.c
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if test -z "`${CC-cc} -fsanitize=leak -c lsan.c 2>&1`"; then
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ac_cv_prog_cc_lsan=yes
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else
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ac_cv_prog_cc_lsan=no
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fi
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rm -rf lsan*
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])
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])
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AC_DEFUN([AC_PROG_CC_UBSAN], [
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AC_CACHE_CHECK([whether ${CC-cc} accepts -fsanitize=undefined],
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ac_cv_prog_cc_ubsan, [
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echo 'void f(){}' > ubsan.c
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if test -z "`${CC-cc} -fsanitize=undefined -c ubsan.c 2>&1`"; then
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ac_cv_prog_cc_ubsan=yes
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else
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ac_cv_prog_cc_ubsan=no
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fi
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rm -rf ubsan*
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])
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])
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AC_DEFUN([COMPILER_FLAGS], [
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with_cflags=""
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if (test "$USE_MAINTAINER_MODE" = "yes"); then
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with_cflags="$with_cflags -Wall -Werror -Wextra"
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with_cflags="$with_cflags -Wno-unused-parameter"
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with_cflags="$with_cflags -Wno-missing-field-initializers"
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with_cflags="$with_cflags -Wdeclaration-after-statement"
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with_cflags="$with_cflags -Wmissing-declarations"
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with_cflags="$with_cflags -Wredundant-decls"
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with_cflags="$with_cflags -Wcast-align"
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with_cflags="$with_cflags -Wswitch-enum"
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with_cflags="$with_cflags -Wformat -Wformat-security"
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with_cflags="$with_cflags -DG_DISABLE_DEPRECATED"
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with_cflags="$with_cflags -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_28"
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with_cflags="$with_cflags -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_32"
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fi
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AC_SUBST([WARNING_CFLAGS], $with_cflags)
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])
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AC_DEFUN([MISC_FLAGS], [
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misc_cflags=""
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misc_ldflags=""
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AC_ARG_ENABLE(optimization, AS_HELP_STRING([--disable-optimization],
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[disable code optimization through compiler]), [
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if (test "${enableval}" = "no"); then
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misc_cflags="$misc_cflags -O0"
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fi
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])
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AC_ARG_ENABLE(asan, AS_HELP_STRING([--enable-asan],
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[enable linking with address sanitizer]), [
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save_LIBS=$LIBS
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AC_CHECK_LIB(asan, _init)
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LIBS=$save_LIBS
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if (test "${enableval}" = "yes" &&
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test "${ac_cv_lib_asan__init}" = "yes" &&
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test "${ac_cv_prog_cc_asan}" = "yes"); then
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misc_cflags="$misc_cflags -fsanitize=address";
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misc_ldflags="$misc_ldflags -fsanitize=address"
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AC_SUBST([ASAN_LIB], ${ac_cv_lib_asan__init})
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fi
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])
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AC_ARG_ENABLE(lsan, AS_HELP_STRING([--enable-lsan],
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[enable linking with address sanitizer]), [
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save_LIBS=$LIBS
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AC_CHECK_LIB(lsan, _init)
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LIBS=$save_LIBS
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if (test "${enableval}" = "yes" &&
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test "${ac_cv_lib_lsan__init}" = "yes" &&
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test "${ac_cv_prog_cc_lsan}" = "yes"); then
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misc_cflags="$misc_cflags -fsanitize=leak";
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misc_ldflags="$misc_ldflags -fsanitize=leak"
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AC_SUBST([ASAN_LIB], ${ac_cv_lib_lsan__init})
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fi
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])
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AC_ARG_ENABLE(ubsan, AS_HELP_STRING([--enable-ubsan],
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[enable linking with address sanitizer]), [
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save_LIBS=$LIBS
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AC_CHECK_LIB(ubsan, _init)
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LIBS=$save_LIBS
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if (test "${enableval}" = "yes" &&
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test "${ac_cv_lib_ubsan__init}" = "yes" &&
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test "${ac_cv_prog_cc_ubsan}" = "yes"); then
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misc_cflags="$misc_cflags -fsanitize=undefined";
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misc_ldflags="$misc_ldflags -fsanitize=undefined";
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fi
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])
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AC_ARG_ENABLE(debug, AS_HELP_STRING([--enable-debug],
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[enable compiling with debugging information]), [
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if (test "${enableval}" = "yes" &&
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test "${ac_cv_prog_cc_g}" = "yes"); then
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misc_cflags="$misc_cflags -g"
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fi
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])
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AC_ARG_ENABLE(pie, AS_HELP_STRING([--enable-pie],
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[enable position independent executables flag]), [
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if (test "${enableval}" = "yes" &&
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test "${ac_cv_prog_cc_pie}" = "yes"); then
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misc_cflags="$misc_cflags -fPIC"
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misc_ldflags="$misc_ldflags -pie -Wl,-z,now"
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fi
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])
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if (test "$enable_coverage" = "yes"); then
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misc_cflags="$misc_cflags --coverage"
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misc_ldflags="$misc_ldflags --coverage"
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fi
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misc_cflags="$misc_cflags -ffunction-sections -fdata-sections"
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misc_ldflags="$misc_ldflags -Wl,--gc-sections"
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AC_SUBST([MISC_CFLAGS], $misc_cflags)
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AC_SUBST([MISC_LDFLAGS], $misc_ldflags)
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])
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