AC_DEFINE(NTOHL_IN_SYS_PARAM_H, 1, Define if <sys/param.h> defines ntohl.)
fi
-# XXX: do this with an M4 macro?
-#dnl Check for various -W flags
-#for flag in "" all unreachable-code conversion sign-compare disabled-optimization
-#do
-# AC_CACHE_CHECK([if \$CC accepts -W${flag}],
-# [ac_cv_c_W${flag}],
-# [CFLAGS="-W${flag} ${CFLAGS_save}"
-# AC_TRY_COMPILE([],,ac_cv_c_W${flag}=yes, ac_cv_c_W${flag}=no)])
-# if test "${ac_cv_c_W${flag}}" != "no"; then
-# CFLAGS_save="-W${flag} ${CFLAGS_save}"; CFLAGS="${CFLAGS_save}"
-# CXXFLAGS_save="-W${flag} ${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
-# OBJCFLAGS_save="-W${flag} ${OBJCFLAGS_save}"; OBJCFLAGS="${OBJCFLAGS_save}"
-# fi
-#done
-
-AC_CACHE_CHECK([if $CC accepts -Wall],
- [ac_cv_c_Wall],
- [CFLAGS="-Wall ${CFLAGS_save}"
- AC_TRY_COMPILE([],,ac_cv_c_Wall=yes, ac_cv_c_Wall=no)])
-
-AC_CACHE_CHECK([if $CC accepts -Wextra],
- [ac_cv_c_Wextra],
- [CFLAGS="-Wextra ${CFLAGS_save}"
- AC_TRY_COMPILE([],,ac_cv_c_Wextra=yes, ac_cv_c_Wextra=no)])
-
-AC_CACHE_CHECK([if $CC accepts -Wno-unused-parameter],
- [ac_cv_c_Wno_unused_parameter],
- [CFLAGS="-Wno-unused-parameter ${CFLAGS_save}"
- AC_TRY_COMPILE([],,ac_cv_c_Wno_unused_parameter=yes, ac_cv_c_Wno_unused_parameter=no)])
-
-AC_CACHE_CHECK([if $CC accepts -Wconversion],
- [ac_cv_c_Wconversion],
- [CFLAGS="-Wconversion ${CFLAGS_save}"
- AC_TRY_COMPILE([],,ac_cv_c_Wconversion=yes, ac_cv_c_Wconversion=no)])
-
-AC_CACHE_CHECK([if $CC accepts -Wunreachable-code],
- [ac_cv_c_Wunreachable_code],
- [CFLAGS="-Wunreachable-code ${CFLAGS_save}"
- AC_TRY_COMPILE([],,ac_cv_c_Wunreachable_code=yes, ac_cv_c_Wunreachable_code=no)])
-
-AC_CACHE_CHECK([if $CC accepts -Wsign-compare],
- [ac_cv_c_Wsign_compare],
- [CFLAGS="-Wsign-compare ${CFLAGS_save}"
- AC_TRY_COMPILE([],,ac_cv_c_Wsign_compare=yes, ac_cv_c_Wsign_compare=no)])
-
-if test "${ac_cv_c_Wall}" != "no"; then
- CFLAGS_save="-Wall ${CFLAGS_save}"; CFLAGS="${CFLAGS_save}"
- CXXFLAGS_save="-Wall ${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
-fi
-
-if test "${ac_cv_c_Wextra}" != "no"; then
- CFLAGS_save="-Wextra ${CFLAGS_save}"; CFLAGS="${CFLAGS_save}"
- CXXFLAGS_save="-Wextra ${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
- OBJCFLAGS_save="-Wextra ${OBJCFLAGS_save}"; OBJCFLAGS="${OBJCFLAGS_save}"
-fi
-
-if test "${ac_cv_c_Wno_unused_parameter}" != "no"; then
- CFLAGS_save="${CFLAGS_save} -Wno-unused-parameter"; CFLAGS="${CFLAGS_save}"
- CXXFLAGS_save="${CFLAGS_save} -Wno-unused-parameter"; CXXFLAGS="${CXXFLAGS_save}"
- OBJCFLAGS_save="${OBJCFLAGS_save} -Wno-unused-parameter "; OBJCFLAGS="${OBJCFLAGS_save}"
-fi
-
-if test "${ac_cv_c_Wsign_compare}" != "no"; then
- CFLAGS_save="-Wsign-compare ${CFLAGS_save}"; CFLAGS="${CFLAGS_save}"
- CXXFLAGS_save="-Wsign-compare ${CFLAGS_save}"; CXXFLAGS="${CXXFLAGS_save}"
- OBJCFLAGS_save="-Wsign-compare ${OBJCFLAGS_save}"; OBJCFLAGS="${OBJCFLAGS_save}"
-fi
+RDC_PROG_CC_WFLAGS_IFELSE([all extra no-unused-parameter conversion unreachable-code sign-compare undef])
dnl Check for -pipe
AC_CACHE_CHECK([if \$CC accepts -pipe],
--- /dev/null
+# <rdenis (at) simphalempin (dot) com>.
+# This file (flags.m4) is free software; unlimited permission to
+# copy and/or distribute it , with or without modifications, as long
+# as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+AC_DEFUN([RDC_PROG_CC_FLAGS_IFELSE],
+[AC_LANG_ASSERT(C)
+ CFLAGS_save="${CFLAGS}"
+ as_ac_var=`echo "ac_cv_prog_cc_flags_$1" | $as_tr_sh`
+ AC_CACHE_CHECK([if $CC accepts $1], [$as_ac_var], [
+ CFLAGS="$1 ${CFLAGS_save}"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+ eval "$as_ac_var=yes"
+ ],[
+ eval "$as_ac_var=no"
+ ])
+ ])
+
+ ac_res=`echo "${as_ac_var}"`
+ AS_IF([test "${ac_res}" != "no"], [
+ CFLAGS="$1 ${CFLAGS_save}"
+ CXXFLAGS="$1 ${CFLAGS_save}"
+ OBJCFLAGS="$1 ${OBJCFLAGS_save}"
+ $2
+ ], [
+ CFLAGS="${CFLAGS_save}"
+ $3
+ ])
+])
+
+AC_DEFUN([RDC_PROG_CC_WFLAGS],
+[ for a in $1; do
+ RDC_PROG_CC_FLAGS_IFELSE([-W$a])
+ done
+])