ac_safe=`echo "$1" | sed 'y%./+-%__pm%'`
old_CPPFLAGS="$CPPFLAGS"
smart_include=
-smart_include_dir=
+dnl # The default directories we search in (in addition to the compilers search path)
+smart_include_dir="/usr/local/include /opt/include"
+
+dnl # Our local versions
+_smart_try_dir=
+_smart_include_dir=
+
+dnl # Add variants with the different prefixes and one with no prefix
+for _prefix in $smart_prefix ""; do
+ for _dir in $smart_try_dir; do
+ _smart_try_dir="${_smart_try_dir} ${_dir}/${_prefix}"
+ done
+
+ for _dir in $smart_include_dir; do
+ _smart_include_dir="${_smart_include_dir} ${_dir}/${_prefix}"
+ done
+done
dnl #
-dnl # Try first any user-specified directory, otherwise we may pick up
+dnl # Try any user-specified directory first otherwise we may pick up
dnl # the wrong version.
dnl #
-if test "x$smart_try_dir" != "x"; then
- for try in $smart_try_dir; do
+if test "x$_smart_try_dir" != "x"; then
+ for try in $_smart_try_dir; do
AC_MSG_CHECKING([for $1 in $try])
CPPFLAGS="-isystem $try $old_CPPFLAGS"
AC_TRY_COMPILE([$2
fi
dnl #
-dnl # Try using the default includes.
+dnl # Try using the default includes (with prefixes).
+dnl #
+if test "x$smart_include" = "x"; then
+ for _prefix in $smart_prefix; do
+ AC_MSG_CHECKING([for ${_prefix}/$1])
+
+ AC_TRY_COMPILE([$2
+ #include <$1>],
+ [int a = 1;],
+ [
+ smart_include="-isystem ${_prefix}/"
+ AC_MSG_RESULT(yes)
+ break
+ ],
+ [
+ smart_include=
+ AC_MSG_RESULT(no)
+ ])
+ done
+fi
+
+dnl #
+dnl # Try using the default includes (without prefixes).
dnl #
if test "x$smart_include" = "x"; then
- AC_MSG_CHECKING([for $1])
- AC_TRY_COMPILE([$2
- #include <$1>],
- [int a = 1;],
- [
- smart_include=" "
- AC_MSG_RESULT(yes)
- break
- ],
- [
- smart_include=
- AC_MSG_RESULT(no)
- ])
+ AC_MSG_CHECKING([for $1])
+
+ AC_TRY_COMPILE([$2
+ #include <$1>],
+ [int a = 1;],
+ [
+ smart_include=" "
+ AC_MSG_RESULT(yes)
+ break
+ ],
+ [
+ smart_include=
+ AC_MSG_RESULT(no)
+ ])
fi
dnl #
dnl # Try to guess possible locations.
dnl #
if test "x$smart_include" = "x"; then
- FR_LOCATE_DIR(smart_include_dir,$1)
- for try in $smart_include_dir /usr/local/include /opt/include; do
+
+ for prefix in $smart_prefix; do
+ FR_LOCATE_DIR(_smart_include_dir,"${_prefix}/${1}")
+ done
+ FR_LOCATE_DIR(_smart_include_dir, $1)
+
+ for try in $_smart_include_dir; do
AC_MSG_CHECKING([for $1 in $try])
CPPFLAGS="-isystem $try $old_CPPFLAGS"
AC_TRY_COMPILE([$2
CPPFLAGS="$smart_include $old_CPPFLAGS"
SMART_CPPFLAGS="$smart_include $SMART_CPPFLAGS"
fi
+
+dnl #
+dnl # Consume prefix, it's not likely to be used
+dnl # between multiple calls.
+dnl #
+smart_prefix=
])
dnl #######################################################################
AC_SUBST(LIBREADLINE)
])dnl
+dnl #
+dnl # Check if we have the choose expr builtin
+dnl #
+AC_DEFUN([FR_HAVE_BUILTIN_CHOOSE_EXPR],
+[
+ AC_CACHE_CHECK([for __builtin_choose_expr support in compiler], [ax_cv_cc_builtin_choose_expr],[
+ AC_RUN_IFELSE(
+ [
+ AC_LANG_SOURCE(
+ [
+ int main(int argc, char **argv) {
+ if ((argc < 0) || !argv) return 1; /* -Werror=unused-parameter */
+ return __builtin_choose_expr(0, 1, 0);
+ }
+ ])
+ ],
+ [ax_cv_cc_builtin_choose_expr=yes],
+ [ax_cv_cc_builtin_choose_expr=no]
+ )
+ ])
+ if test "x$ax_cv_cc_builtin_choose_expr" = "xyes"; then
+ AC_DEFINE([HAVE_BUILTIN_CHOOSE_EXPR],1,[Define if the compiler supports __builtin_choose_expr])
+ fi
+])
+
+dnl #
+dnl # Check if we have the types compatible p builtin
+dnl #
+AC_DEFUN([FR_HAVE_BUILTIN_TYPES_COMPATIBLE_P],
+[
+ AC_CACHE_CHECK([for __builtin_types_compatible_p support in compiler], [ax_cv_cc_builtin_types_compatible_p],[
+ AC_RUN_IFELSE(
+ [
+ AC_LANG_SOURCE(
+ [
+ int main(int argc, char **argv) {
+ if ((argc < 0) || !argv) return 1; /* -Werror=unused-parameter */
+ return !(__builtin_types_compatible_p(char *, char *));
+ }
+ ])
+ ],
+ [ax_cv_cc_builtin_types_compatible_p=yes],
+ [ax_cv_cc_builtin_types_compatible_p=no]
+ )
+ ])
+ if test "x$ax_cv_cc_builtin_types_compatible_p" = "xyes"; then
+ AC_DEFINE([HAVE_BUILTIN_TYPES_COMPATIBLE_P],1,[Define if the compiler supports __builtin_types_compatible_p])
+ fi
+])
+
+dnl #
+dnl # Check if we have the bwsap64 builtin
+dnl #
+AC_DEFUN([FR_HAVE_BUILTIN_BSWAP64],
+[
+ AC_CACHE_CHECK([for __builtin_bswap64 support in compiler], [ax_cv_cc_builtin_bswap64],[
+ AC_RUN_IFELSE(
+ [
+ AC_LANG_SOURCE([
+ int main(int argc, char **argv) {
+ if ((argc < 0) || !argv) return 1; /* -Werror=unused-parameter */
+ return (__builtin_bswap64(0));
+ }
+ ])
+ ],
+ [ax_cv_cc_builtin_bswap64=yes],
+ [ax_cv_cc_builtin_bswap64=no]
+ )
+ ])
+ if test "x$ax_cv_cc_builtin_bswap64" = "xyes"; then
+ AC_DEFINE([HAVE_BUILTIN_BSWAP_64],1,[Define if the compiler supports __builtin_bswap64])
+ fi
+])
+
+dnl #
+dnl # Check if we have __attribute__((__bounded__)) (usually only OpenBSD with GCC)
+dnl #
+AC_DEFUN([FR_HAVE_BOUNDED_ATTRIBUTE],[
+ AC_CACHE_CHECK([for __attribute__((__bounded__)) support in compiler], [ax_cv_cc_bounded_attribute],[
+ CFLAGS_SAVED=$CFLAGS
+ CFLAGS="$CFLAGS -Werror"
+ AC_RUN_IFELSE(
+ [
+ AC_LANG_SOURCE([
+ void test(char *buff) __attribute__ ((__bounded__ (__string__, 1, 1)));
+ int main(int argc, char **argv) {
+ if ((argc < 0) || !argv) return 1; /* -Werror=unused-parameter */
+ return 0;
+ }
+ ])
+ ],
+ [ax_cv_cc_bounded_attribute=yes],
+ [ax_cv_cc_bounded_attribute=no]
+ )
+ CFLAGS="$CFLAGS_SAVED"
+ ])
+ if test "x$ax_cv_cc_bounded_attribute" = "xyes"; then
+ AC_DEFINE(HAVE_ATTRIBUTE_BOUNDED, 1, [Define if your compiler supports the __bounded__ attribute (usually OpenBSD gcc).])
+ fi
+])
+
AC_INCLUDE(aclocal.m4)
projects / freeradius.git / blobdiff