*/*) cd `expr X$0 : 'X\(.*\)/'` ;;
esac
+if test -f config_h.SH -a ! -f config.h; then
+ . ./config_h.SH
+ CONFIG_H=already-done
+fi
+
warn=''
# Add -Wall for the core modules iff gcc and not already -Wall
#ifdef I_UNISTD
#include <unistd.h>
#endif
-#ifdef I_SYSTYPES
+#ifdef I_SYS_TYPES
#include <sys/types.h>
#endif
-#ifdef I_SYSPARAM
+#ifdef I_SYS_PARAM
#include <sys/param.h>
#endif
-#ifdef I_SYSRESOURCE
+#ifdef I_SYS_RESOURCE
#include <sys/resource.h>
#endif
-#ifdef I_SYSSELECT
+#ifdef I_SYS_SELECT
#include <sys/select.h>
#endif
#if defined(HAS_SOCKET) && !defined(VMS) && !defined(WIN32) /* See perl.h. */
#include <sys/socket.h>
#endif
-#ifdef I_SYSSTAT
+#ifdef I_SYS_STAT
#include <sys/stat.h>
#endif
-#ifdef I_SYSTIME
+#ifdef I_SYS_TIME
#include <sys/time.h>
#endif
-#ifdef I_SYSTIMES
+#ifdef I_SYS_TIMES
#include <sys/times.h>
#endif
-#ifdef I_SYSWAIT
+#ifdef I_SYS_WAIT
#include <sys/wait.h>
#endif
/* The gcc -ansi can cause a lot of noise in Solaris because of:
* that struct cannot be compared in some gcc releases with a flat
* integer, such as a STRLEN. */
+ IV iv;
Off_t t0a = 2;
STRLEN t0b = 3;
int t0c = t0a == t0b;
- return 0;
+/* In FreeBSD 6.2 (and probably other releases too), with -Duse64bitint,
+ perl will use atoll(3). However, that declaration is hidden in <stdlib.h>
+ if we force the compiler to use -std=c89 mode.
+*/
+ iv = Atol("42");
+
+ return (!t0c && (iv == 42)) ? 0 : -1; /* Try to avoid 'unused' warnings. */
}
__EOT__
stdflags=''
-# Further gcc warning options.
+# Further gcc warning options. Build up a list of options that work.
+# Note that some problems may only show up with combinations of options,
+# e.g. a warning might show up only with -Wall -ansi, not with either
+# one individually.
+# TODO: Ponder whether to migrate this back to Configure so hints files can
+# tweak it. Also, be paranoid about whether results we've deduced in Configure
+# (especially about things like long long, which are not in C89) will still be
+# valid if we now add flags like -std=c89.
+
case "$gccversion" in
'') ;;
[12]*) ;; # gcc versions 1 (gasp!) and 2 are not good for this.
Intel*) ;; # # Is that you, Intel C++?
-*) for opt in -ansi -pedantic -std=c89 -W -Wextra -Wdeclaration-after-statement -Wendif-labels
+*) for opt in -ansi -std=c89 -W -Wextra -Wdeclaration-after-statement -Wendif-labels -Wc++-compat
do
case " $ccflags " in
*" $opt "*) ;; # Skip if already there.
*) rm -f _cflags$_exe
- case "`$cc $cflags $opt _cflags.c -o _cflags$_exe 2>&1`" in
+ case "`$cc $cflags $warn $stdflags $opt _cflags.c -o _cflags$_exe 2>&1`" in
*"unrecognized"*) ;;
+ *"implicit declaration"*) ;; # Was something useful hidden?
*"Invalid"*) ;;
+ *"is valid for C"*) ;;
*) if test -x _cflags$_exe
then
case "$opt" in
esac
rm -f _cflags.c _cflags$_exe
-# If we have g++, we cannot have the -Wdeclaration-after-statement.
-# Some g++s accept it but then whine about it with every file.
-# This removal is also done "later", in cflags run time.
-case "$cc" in
-*g++*) warn="`echo $warn|sed 's/-Wdeclaration-after-statement/ /'`" ;;
-esac
-
-# If we have -Duse64bitint (or equivalent) in effect and the quadtype
-# has become 'long long', gcc -pedantic becomes unbearable (moreso
-# when combined with -Wall) because long long and LL and %lld|%Ld
-# become warn-worthy. So let's drop the -pedantic in that case.
-case "$quadtype:$sPRId64" in
-"long long"*|*lld*|*Ld*)
- ccflags="`echo $ccflags|sed 's/-pedantic/ /'`"
- warn="`echo $warn|sed 's/-pedantic/ /'`"
+case "$gccversion" in
+'') ;;
+*)
+ if [ "$gccansipedantic" = "" ]; then
+ # If we have -Duse64bitint (or equivalent) in effect and the quadtype
+ # has become 'long long', gcc -pedantic becomes unbearable (moreso
+ # when combined with -Wall) because long long and LL and %lld|%Ld
+ # become warn-worthy. So let's drop the -pedantic in that case.
+ case "$quadtype:$sPRId64" in
+ "long long"*|*lld*|*Ld*)
+ ccflags="`echo $ccflags|sed 's/-pedantic/ /'`"
+ warn="`echo $warn|sed 's/-pedantic/ /'`"
+ ;;
+ esac
+ # Similarly, since 'long long' isn't part of C89, FreeBSD 6.2 headers
+ # don't declare atoll() under -std=c89, but we need it. In general,
+ # insisting on -std=c89 is inconsistent with insisting on using
+ # 'long long'. So drop -std=c89 and -ansi as well if we're using
+ # 'long long' as our main integral type.
+ case "$ivtype" in
+ "long long")
+ ccflags=`echo $ccflags|sed -e 's/-pedantic/ /' -e 's/-std=c89/ /' -e 's/-ansi/ /'`
+ warn=`echo $warn|sed -e 's/-pedantic/ /' -e 's/-ansi/ /'`
+ stdflags=`echo $stdflags|sed -e 's/-std=c89/ /'`
+ ;;
+ esac
+ fi
+ # Using certain features (like the gcc statement expressions)
+ # requires knowing whether -pedantic has been specified.
+ case "$warn$ccflags" in
+ *-pedantic*) warn="$warn -DPERL_GCC_PEDANTIC" ;;
+ esac
;;
esac
-case "$warn$ccflags" in
-*-pedantic*) warn="$warn -DPERL_GCC_PEDANTIC" ;;
-esac
-
# Code to set any extra flags here.
extra=''
stdflags="$stdflags"
# Extra extra.
extra="$extra"
+# what do executables look like?
+_exe="$_exe"
!GROK!THIS!
usersub) ;;
utf8) ;;
util) ;;
- xsutils) ;;
*) ;;
esac
-case "$cc" in
-*g++*)
- # We need to remove this also in here (removed also earlier in cflags.SH).
- ccflags="`echo $ccflags|sed 's/-Wdeclaration-after-statement/ /'`"
- ;;
-esac
-
-case "$cc" in
-*g++*)
- # Without -Wno-unused-variable g++ 4.x compiles are rather unwatchable
- # because of all the warnings about Perl___notused, and g++ doesn't do
- # __attribute__((unused)) (and even if at some stage it may, people do
- # have older gcc installations), and ((void)x) isn't enough to silence
- # the noises about XS functions not using their cv parameter, so we need
- # the -Wno-unused-parameter too.
- # Yes, we lose some valid warnings, but hopefully other compilers
- # (like gcc) will still pick up those warnings.
- for o in -Wno-unused-variable -Wno-unused-parameter
- do
- case "$warn" in
- *$o*) ;;
- *) warn="$warn $o" ;;
+ case "$cc" in
+ *g++*)
+ # Extra paranoia in case people have bad canned ccflags:
+ # bad in the sense that the flags are accepted by g++,
+ # but then whined about.
+ for f in -Wdeclaration-after-statement -std=c89
+ do
+ ccflags=`echo $ccflags|sed 's/$f/ /'`
+ done
+ ;;
+ esac
+ cppflags=`echo $cppflags|sed 's/-Wdeclaration-after-statement/ /'`
+
+ case "$cc" in
+ *g++*)
+ # Without -Wno-unused-variable g++ 4.x compiles are rather unwatchable
+ # because of all the warnings about Perl___notused, and g++ doesn't do
+ # __attribute__((unused)) (and even if at some stage it may, people do
+ # have older gcc installations), and ((void)x) isn't enough to silence
+ # the noises about XS functions not using their cv parameter, so we need
+ # the -Wno-unused-parameter too.
+ # Yes, we lose some valid warnings, but hopefully other compilers
+ # (like gcc) will still pick up those warnings.
+ for o in -Wno-unused-variable -Wno-unused-parameter
+ do
+ case "$warn" in
+ *$o*) ;;
+ *) warn="$warn $o" ;;
+ esac
+ done
+ ;;
esac
- done
- ;;
-esac
-if test -f .patch; then
- ccflags="-DPERL_PATCHNUM=`cat .patch` $ccflags"
-fi
: Can we perhaps use $ansi2knr here
echo "$cc -c -DPERL_CORE $ccflags $stdflags $optimize $warn $extra"
. $TOP/config.sh
+ # end per file behaviour
done
!NO!SUBS!
chmod 755 cflags
https://perl5.git.perl.org / perl5.git / blobdiff