acinclude.m4

   1 AC_DEFUN([AC_PROG_CC_PIE], [
   2         AC_CACHE_CHECK([whether ${CC-cc} accepts -fPIE], ac_cv_prog_cc_pie, [
   3                 echo 'void f(){}' > conftest.c
   4                 if test -z "`${CC-cc} -fPIE -pie -c conftest.c 2>&1`"; then
   5                         ac_cv_prog_cc_pie=yes
   6                 else
   7                         ac_cv_prog_cc_pie=no
   8                 fi
   9                 rm -rf conftest*
  10         ])
  11 ])
  12
  13 AC_DEFUN([COMPILER_FLAGS], [
  14         with_cflags=""
  15         if (test "$USE_MAINTAINER_MODE" = "yes"); then
  16                 with_cflags="$with_cflags -Wall -Werror -Wextra"
  17                 with_cflags="$with_cflags -Wno-unused-parameter"
  18                 with_cflags="$with_cflags -Wno-missing-field-initializers"
  19                 with_cflags="$with_cflags -Wdeclaration-after-statement"
  20                 with_cflags="$with_cflags -Wmissing-declarations"
  21                 with_cflags="$with_cflags -Wredundant-decls"
  22                 with_cflags="$with_cflags -Wcast-align"
  23                 with_cflags="$with_cflags -DG_DISABLE_DEPRECATED"
  24                 with_cflags="$with_cflags -DGLIB_VERSION_MIN_REQUIRED=GLIB_VERSION_2_28"
  25                 with_cflags="$with_cflags -DGLIB_VERSION_MAX_ALLOWED=GLIB_VERSION_2_28"
  26         fi
  27         AC_SUBST([WARNING_CFLAGS], $with_cflags)
  28 ])
  29
  30 AC_DEFUN([MISC_FLAGS], [
  31         misc_cflags=""
  32         misc_ldflags=""
  33         AC_ARG_ENABLE(optimization, AC_HELP_STRING([--disable-optimization],
  34                         [disable code optimization through compiler]), [
  35                 if (test "${enableval}" = "no"); then
  36                         misc_cflags="$misc_cflags -O0"
  37                 fi
  38         ])
  39         AC_ARG_ENABLE(debug, AC_HELP_STRING([--enable-debug],
  40                         [enable compiling with debugging information]), [
  41                 if (test "${enableval}" = "yes" &&
  42                                 test "${ac_cv_prog_cc_g}" = "yes"); then
  43                         misc_cflags="$misc_cflags -g"
  44                 fi
  45         ])
  46         AC_ARG_ENABLE(pie, AC_HELP_STRING([--enable-pie],
  47                         [enable position independent executables flag]), [
  48                 if (test "${enableval}" = "yes" &&
  49                                 test "${ac_cv_prog_cc_pie}" = "yes"); then
  50                         misc_cflags="$misc_cflags -fPIC"
  51                         misc_ldflags="$misc_ldflags -pie"
  52                 fi
  53         ])
  54         AC_SUBST([MISC_CFLAGS], $misc_cflags)
  55         AC_SUBST([MISC_LDFLAGS], $misc_ldflags)
  56 ])