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-rw-r--r--configure.ac25
1 files changed, 16 insertions, 9 deletions
diff --git a/configure.ac b/configure.ac
index 3ce026d..5f5f73d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -15,6 +15,7 @@ AC_COPYRIGHT([
See the included file: COPYING for copyright information.
])
AC_INIT(pam_tacplus, 1.3.9, [jeroen@jeroennijhof.nl,pawel.krawczyk@hush.com])
+
AC_CONFIG_AUX_DIR(config)
AM_INIT_AUTOMAKE([foreign])
AC_CONFIG_SRCDIR([pam_tacplus.c])
@@ -51,15 +52,21 @@ dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_SIZE_T
AC_HEADER_TIME
-AX_CFLAGS_WARN_ALL()
-AX_CHECK_COMPILE_FLAG(["-fstack-protector-all"], [AX_APPEND_FLAG(["-fstack-protector-all"],[CFLAGS])], [])
-AX_CHECK_COMPILE_FLAG(["-Wl,-z,relro"], [AX_APPEND_FLAG(["-Wl,-z,relro"],[CFLAGS])], [])
-AX_CHECK_COMPILE_FLAG(["-Wl,-z,now"], [AX_APPEND_FLAG(["-Wl,-z,now"],[CFLAGS])], [])
-AX_CHECK_COMPILE_FLAG(["-fPIE"], [AX_APPEND_FLAG(["-fPIE"],[CFLAGS])], [])
-AX_CHECK_COMPILE_FLAG(["-pie"], [AX_APPEND_FLAG(["-pie"],[CFLAGS])], [])
-AX_APPEND_FLAG(["-O3"],[CFLAGS])
-AX_APPEND_FLAG(["-Wall"],[CFLAGS])
-AX_APPEND_FLAG(["-D_FORTIFY_SOURCE=2"],[CFLAGS])
+
+for flag in -fstack-protector-all -Wl,-z,relro -Wl,-z,relro -Wl,-z,now -fPIE -pie -D_FORTIFY_SOURCE=2; do
+ my_save_cflags="$CFLAGS"
+ CFLAGS=$flag
+ AC_MSG_CHECKING([whether CC supports $flag])
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
+ [AC_MSG_RESULT([yes])]
+ [AM_CFLAGS="$AM_CFLAGS $flag"]
+ [AM_LDFLAGS="$AM_LDFLAGS $flag"],
+ [AC_MSG_RESULT([no])]
+ )
+ CFLAGS="$my_save_cflags"
+ AC_SUBST([AM_CFLAGS])
+ AC_SUBST([AM_LDFLAGS])
+done
dnl --------------------------------------------------------------------
dnl Checks for library functions.