SXE_LD_EXPORT_DYNAMIC
dnl in case compiler issues PIE by default which breaks pdump
SXE_LD_NO_PIE
-
- ## check whether CC reacts to `extern inline' gnu89 inline declarations
- ## with a warning
- SXE_CHECK_CC_EXTERN_INLINE
])dnl SXE_CHECK_CC_CHAR
AC_DEFUN([SXE_CHECK_CC_HACKS], [dnl
## Warnings about char subscripts are pretty
## pointless, though,
## and we use them in various places.
- SXE_CHECK_COMPILER_FLAGS([-Wsign-compare], [
- warnflags="$warnflags -Wsign-compare"])
- SXE_CHECK_COMPILER_FLAGS([-Wno-char-subscripts], [
- warnflags="$warnflags -Wno-char-subscripts"])
- SXE_CHECK_COMPILER_FLAGS([-Wundef], [
- warnflags="$warnflags -Wundef"])
+ if test "${with_maximum_warning_output}" = "yes"; then
+ SXE_CHECK_COMPILER_FLAGS([-Wsign-compare], [
+ warnflags="$warnflags -Wsign-compare"])
+ SXE_CHECK_COMPILER_FLAGS([-Wno-char-subscripts], [
+ warnflags="$warnflags -Wno-char-subscripts"])
+ SXE_CHECK_COMPILER_FLAGS([-Wundef], [
+ warnflags="$warnflags -Wundef"])
+ fi
## too much at the moment, we rarely define protos
#warnflags="$warnflags -Wmissing-prototypes -Wstrict-prototypes"
warnflags="$warnflags -Wmissing-declarations"])
SXE_CHECK_COMPILER_FLAGS([-Wmissing-prototypes], [
warnflags="$warnflags -Wmissing-prototypes"])
- SXE_CHECK_COMPILER_FLAGS([-Winline], [
- warnflags="$warnflags -Winline"])
SXE_CHECK_COMPILER_FLAGS([-Wbad-function-cast], [
warnflags="$warnflags -Wbad-function-cast"])
SXE_CHECK_COMPILER_FLAGS([-Wcast-qual], [
SXE_CHECK_COMPILER_FLAGS([-Wcast-align], [
warnflags="$warnflags -Wcast-align"])
+ ## too aggressive innit
+ if test "${with_maximum_warning_output}" = "yes"; then
+ SXE_CHECK_COMPILER_FLAGS([-Winline], [
+ warnflags="$warnflags -Winline"])
+ fi
+
## warn about incomplete switches
- SXE_CHECK_COMPILER_FLAGS([-Wswitch], [
- warnflags="$warnflags -Wswitch"])
- SXE_CHECK_COMPILER_FLAGS([-Wswitch-default], [
- warnflags="$warnflags -Wswitch-default"])
- SXE_CHECK_COMPILER_FLAGS([-Wswitch-enum], [
- warnflags="$warnflags -Wswitch-enum"])
+ if test "${with_maximum_warning_output}" = "yes"; then
+ SXE_CHECK_COMPILER_FLAGS([-Wswitch], [
+ warnflags="$warnflags -Wswitch"])
+ SXE_CHECK_COMPILER_FLAGS([-Wswitch-default], [
+ warnflags="$warnflags -Wswitch-default"])
+ SXE_CHECK_COMPILER_FLAGS([-Wswitch-enum], [
+ warnflags="$warnflags -Wswitch-enum"])
+ fi
## Wunused's
- SXE_CHECK_COMPILER_FLAGS([-Wunused-function], [
- warnflags="$warnflags -Wunused-function"])
- SXE_CHECK_COMPILER_FLAGS([-Wunused-variable], [
- warnflags="$warnflags -Wunused-variable"])
- SXE_CHECK_COMPILER_FLAGS([-Wunused-parameter], [
- warnflags="$warnflags -Wunused-parameter"])
- SXE_CHECK_COMPILER_FLAGS([-Wunused-value], [
- warnflags="$warnflags -Wunused-value"])
- SXE_CHECK_COMPILER_FLAGS([-Wunused], [
- warnflags="$warnflags -Wunused"])
+ if test "${with_maximum_warning_output}" = "yes"; then
+ SXE_CHECK_COMPILER_FLAGS([-Wunused-function], [
+ warnflags="$warnflags -Wunused-function"])
+ SXE_CHECK_COMPILER_FLAGS([-Wunused-variable], [
+ warnflags="$warnflags -Wunused-variable"])
+ SXE_CHECK_COMPILER_FLAGS([-Wunused-parameter], [
+ warnflags="$warnflags -Wunused-parameter"])
+ SXE_CHECK_COMPILER_FLAGS([-Wunused-value], [
+ warnflags="$warnflags -Wunused-value"])
+ SXE_CHECK_COMPILER_FLAGS([-Wunused], [
+ warnflags="$warnflags -Wunused"])
+ fi
## icc
SXE_CHECK_COMPILER_FLAGS([-Wreorder], [
SXE_CHECK_COMPILER_FLAGS([-fno-strict-aliasing], [
warnflags="$warnflags -fno-strict-aliasing"])
+ ## icc specific
+ SXE_CHECK_COMPILER_FLAGS([-diag-disable 10237], [dnl
+ warnflags="${warnflags} -diag-disable 10237"], [
+ SXE_CHECK_COMPILER_FLAGS([-wd 10237], [dnl
+ warnflags="${warnflags} -wd 10237"])])
+
AC_MSG_CHECKING([for preferred warning flags])
AC_MSG_RESULT([${warnflags}])
])dnl SXE_WARNFLAGS
## (and hence PIE off) and hope bug 16 remains fixed
SXE_CHECK_COMPILER_FLAGS([-nopie],
[featflags="$featflags -nopie"])
+
+ ## icc and gcc related
+ ## check if some stuff can be staticalised
+ ## actually requires SXE_WARNFLAGS so warnings would be disabled
+ ## that affect the outcome of the following tests
+ SXE_CHECK_COMPILER_FLAGS([-static-intel], [
+ featflags="${featflags} -static-intel"
+ XCCLDFLAGS="${XCCLDFLAGS} -static-intel"], [:], [${SXE_CFLAGS}])
+ SXE_CHECK_COMPILER_FLAGS([-static-libgcc], [
+ featflags="${featflags} -static-libgcc"
+ XCCLDFLAGS="${XCCLDFLAGS} -static-libgcc"], [:], [${SXE_CFLAGS}])
+
+ AC_SUBST([XCCLDFLAGS])
])dnl SXE_FEATFLAGS
SXE_CHECK_COMPILER_FLAGS([-fsection-anchors],
[optiflags="$optiflags -fsection-anchors"])
-dnl ## actually this belongs to error-checking stuff
-dnl SXE_CHECK_COMPILER_FLAGS([-fstack-protector],
-dnl [optiflags="$optiflags -fstack-protector"])
-dnl if test "$sxe_cv_c_flags__fstack_protector" = "yes"; then
-dnl ## just check for ssp in this case
-dnl AC_CHECK_LIB([ssp], [__stack_chk_guard])
-dnl fi
-
SXE_CHECK_COMPILER_FLAGS([-fbranch-target-load-optimize])
SXE_CHECK_COMPILER_FLAGS([-fbranch-target-load-optimize2])
if test "$sxe_cv_c_flags__fbranch_target_load_optimize2" = "yes"; then
##### http://autoconf-archive.cryp.to/ax_check_compiler_flags.html
## renamed the prefix to SXE_
AC_DEFUN([SXE_CHECK_COMPILER_FLAGS], [dnl
+dnl SXE_CHECK_COMPILER_FLAGS(<FLAG>, <ACTION-IF-FOUND>, <ACTION-IF-NOT-FOUND>,
+dnl <ADDITIONAL-FLAGS>)
AC_MSG_CHECKING([whether _AC_LANG compiler accepts $1])
dnl Some hackery here since AC_CACHE_VAL can't handle a non-literal varname:
AS_LITERAL_IF([$1], [
AC_CACHE_VAL(AS_TR_SH(sxe_cv_[]_AC_LANG_ABBREV[]_flags_$1), [
sxe_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
- _AC_LANG_PREFIX[]FLAGS="$1"
+ _AC_LANG_PREFIX[]FLAGS="$4 $1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
AS_TR_SH(sxe_cv_[]_AC_LANG_ABBREV[]_flags_$1)="yes",
AS_TR_SH(sxe_cv_[]_AC_LANG_ABBREV[]_flags_$1)="no")
_AC_LANG_PREFIX[]FLAGS=$sxe_save_FLAGS])], [
sxe_save_FLAGS=$[]_AC_LANG_PREFIX[]FLAGS
- _AC_LANG_PREFIX[]FLAGS="$1"
+ _AC_LANG_PREFIX[]FLAGS="$4 $1"
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
eval AS_TR_SH(sxe_cv_[]_AC_LANG_ABBREV[]_flags_$1)="yes",
eval AS_TR_SH(sxe_cv_[]_AC_LANG_ABBREV[]_flags_$1)="no")
AC_MSG_RESULT([$typeofname])
])dnl SXE_CHECK_BROKEN_RESTRICT
+AC_DEFUN([SXE_STACK_FLAGS], [dnl
+ ## actually this belongs to error-checking stuff
+ SXE_CHECK_COMPILER_FLAGS([-fstack-protector],
+ [diagflags="${diagflags} -fstack-protector"])
+ if test "${sxe_cv_c_flags__fstack_protector}" = "yes"; then
+ ## just check for ssp in this case
+ AC_CHECK_LIB([ssp], [__stack_chk_guard])
+ fi
+])dnl SXE_STACK_FLAGS
+
dnl recommended interface macros
## compiler wrapper
AC_DEFUN([SXE_CHECK_CC], [dnl
dnl #### This may need to be overhauled so that all of SXEMACS_CC's flags
dnl are handled separately, not just the xe_cflags_warning stuff.
+ ## diagnostic stuff and error checking
+ ## this may somehow be in contradiction to optimisation flags later on
+ ## so we issue the tests right here
+ if test "${with_error_checking_stack}" = "yes"; then
+ SXE_STACK_FLAGS
+ fi
+ if test "${with_error_checking_malldbg}" = "yes"; then
+ ## keep MALLOC_PERTURB_ and friends?
+ :
+ else
+ EXTRA_BATCHENV="MALLOC_PERTURB_= MALLOC_CHECK_="
+ AC_SUBST([EXTRA_BATCHENV])
+ fi
+ SXE_CFLAGS="${SXE_CFLAGS} ${diagflags}"
+
## Use either command line flag, environment var, or autodetection
if test "$with_ridiculously_aggressive_optimisations" = "yes"; then
CFLAGS=""
SXE_DEBUGFLAGS
SXE_WARNFLAGS
SXE_OPTIFLAGS
+ SXE_CFLAGS="$SXE_CFLAGS $debugflags $optiflags $warnflags"
+
SXE_FEATFLAGS
- SXE_CFLAGS="$debugflags $featflags $optiflags $warnflags"
+ SXE_CFLAGS="$SXE_CFLAGS $featflags"
+
elif test "$CFLAGS_uspecified_p" = "no" -o \
"$ac_test_CFLAGS" != "set"; then
SXE_DEBUGFLAGS
SXE_WARNFLAGS
- SXE_FEATFLAGS
## the old settings
## Following values of CFLAGS are known to work well.
## Should we take debugging options into consideration?
- if test "$GCC" = "yes"; then
- optiflags="-O3"
- elif test "$__SUNPRO_C" = "yes"; then
- case "$opsys" in
- sol2 ) optiflags="-xO4" ;;
- sunos4* ) optiflags="-xO2" ;;
- esac
- elif test "$__DECC" = "yes"; then
- optiflags="-O3"
- elif test "$CC" = "xlc"; then
- optiflags="-g -O3 -qstrict -qnoansialias -qlibansi -qro -qmaxmem=20000"
- elif test "$__ICC" = "yes"; then
- optiflags="-g -O3 -Ob2"
- ### Add optimal CFLAGS support for other compilers HERE!
- else
- optiflags="-O" ## The only POSIX-approved flag
+ SXE_CHECK_COMPILER_FLAGS([-xO4], [dnl
+ ## ah, it's sunos4*
+ optiflags="${optiflags} -xO4"], [dnl
+ SXE_CHECK_COMPILER_FLAGS([-xO2], [dnl
+ ## oh, a sol2
+ optiflags="${optiflags} -xO2"])])
+ SXE_CHECK_COMPILER_FLAGS([-O3], [dnl
+ ## gcc, icc, decc, et al.
+ optiflags="${optiflags} -O3"])
+
+ ## xlc specific
+ SXE_CHECK_COMPILER_FLAGS([-qnoansialias -qlibansi], [dnl
+ optiflags="${optiflags} -qnoansialias -qlibansi"])
+ SXE_CHECK_COMPILER_FLAGS([-qro -qmaxmem=20000], [dnl
+ optiflags="${optiflags} -qro -qmaxmem=20000"])
+
+ ## icc specific
+ SXE_CHECK_COMPILER_FLAGS([-inline-level=2], [dnl
+ ## ah, one of the new flavours, tasty
+ optiflags="${optiflags} -inline-level=2"], [dnl
+ SXE_CHECK_COMPILER_FLAGS([-Ob2], [dnl
+ ## deprecated nowadays
+ optiflags="${optiflags} -Ob2"])])
+
+ ## final check
+ if test -z "${optiflags}"; then
+ SXE_CHECK_COMPILER_FLAGS([-O], [dnl
+ ## The only POSIX-approved flag
+ optiflags="-O"])
fi
- SXE_CFLAGS="$debugflags $featflags $optiflags $warnflags"
+ SXE_CFLAGS="$SXE_CFLAGS $debugflags $optiflags $warnflags"
+
+ SXE_FEATFLAGS
+ SXE_CFLAGS="$SXE_CFLAGS $featflags"
else
- SXE_CFLAGS=${USER_CFLAGS}
+ SXE_CFLAGS="${SXE_CFLAGS} ${USER_CFLAGS}"
featflags=""
debugflags=""
optiflags=""
warnflags=""
+ diagflags=""
fi
## unset the werror flag again
projects / sxemacs / blobdiff