#include <setjmp.h>
/* Just in case the inclusion of perl.h did not
* pull in enough system headers, let's try again. */
-#ifdef I_STDLIB
#include <stdlib.h>
-#endif
-#ifdef I_STDDEF
#include <stddef.h>
-#endif
-#ifdef I_STDARG
#include <stdarg.h>
-#endif
-#ifdef I_LIMITS
#include <limits.h>
-#endif
#ifdef I_DIRENT
#include <dirent.h>
#endif
IV iv;
Off_t t0a = 2;
STRLEN t0b = 3;
- int t0c = t0a == t0b;
+ int t0c = (STRLEN)t0a == t0b;
+
+ printf("%s: %d\n", argv[0], argc);
/* In FreeBSD 6.2 (and probably other releases too), with -Duse64bitint,
perl will use atoll(3). However, that declaration is hidden in <stdlib.h>
# (especially about things like long long, which are not in C89) will still be
# valid if we now add flags like -std=c89.
+pedantic=''
+case "$gccansipedantic" in
+define) pedantic='-pedantic' ;;
+esac
+
case "$gccversion" in
'') ;;
-[12]*) ;; # gcc versions 1 (gasp!) and 2 are not good for this.
+[12].*) ;; # gcc versions 1 (gasp!) and 2 are not good for this.
Intel*) ;; # # Is that you, Intel C++?
-# XXX if -pedantic (or -pedantic-errors!) is ever added,
-# the -Werror=declaration-after-statement can be removed
-# since -std=c89 -pedantic implies the -Werror=...
-*) for opt in -ansi -std=c89 -Wextra -W \
+#
+# NOTE 1: the -std=c89 without -pedantic is a bit pointless.
+# Just -std=c89 means "if there is room for interpretation,
+# interpret the C89 way." It does NOT mean "strict C89" on its own.
+# You need to add the -pedantic for that. To do this with Configure,
+# do -Dgccansipedantic (note that the -ansi is included in any case,
+# the option is a bit oddly named, for historical reasons.)
+#
+# NOTE 2: -pedantic necessitates adding a couple of flags:
+# * -PERL_GCC_PEDANTIC so that the perl code can adapt: there's nothing
+# added by gcc itself to indicate pedanticness.
+# * -Wno-overlength-strings under -DDEBUGGING because quite many of
+# the LEAVE_with_name() and assert() calls generate string literals
+# longer then the ANSI minimum of 509 bytes.
+#
+# NOTE 3: the relative order of these options matters:
+# -Wextra before -W
+# -std=c89 before -ansi
+# -pedantic* before -Werror=d-a-s
+#
+*) for opt in -std=c89 -ansi $pedantic \
-Werror=declaration-after-statement \
+ -Werror=pointer-arith \
+ -Wextra -W \
-Wc++-compat -Wwrite-strings
do
case " $ccflags " in
*" $opt "*) ;; # Skip if already there.
*) rm -f _cflags$_exe
- case "`$cc -DPERL_NO_INLINE_FUNCTIONS $ccflags $warn $stdflags $opt _cflags.c -o _cflags$_exe 2>&1`" in
+ flags="-DPERL_NO_INLINE_FUNCTIONS $ccflags $warn $stdflags $opt"
+ case "$opt" in
+ *-pedantic*) flags="$flags -DPERL_GCC_PEDANTIC" ;;
+ esac
+ # echo "opt = $opt, flags = $flags"
+ cmd="$cc $flags _cflags.c -o _cflags$_exe"
+ out="`$cmd 2>&1`"
+ # echo "$cmd --> $out"
+ case "$out" in
*"unrecognized"*) ;;
*"unknown"*) ;;
*"implicit declaration"*) ;; # Was something useful hidden?
echo "cflags.SH: Adding $opt."
stdflags="$stdflags $opt"
;;
- *) case "$opt" in
- -W)
- # -Wextra is the modern form of -W, so add
- # -W only if -Wextra is not there already.
- case " $warn " in
- *-Wextra*) ;;
- *)
- echo "cflags.SH: Adding $opt."
- warn="$warn opt"
- ;;
- esac
- ;;
+ -ansi)
+ # -std=c89 is the modern form of -ansi, so add
+ # -ansi only if -std=c89 is not there already.
+ case " $stdflags " in
+ *-std=c89*) ;;
+ *)
+ echo "cflags.SH: Adding $opt."
+ stdflags="$stdflags $opt"
+ ;;
+ esac
+ ;;
+ -W)
+ # -Wextra is the modern form of -W, so add
+ # -W only if -Wextra is not there already.
+ case " $warn " in
+ *-Wextra*) ;;
+ *)
+ echo "cflags.SH: Adding $opt."
+ warn="$warn $opt"
+ ;;
+ esac
+ ;;
+ -Werror=declaration-after-statement)
+ # -pedantic* (with -std=c89) covers -Werror=d-a-s.
+ case "$stdflags$warn" in
+ *-std=c89*-pedantic*|*-pedantic*-std=c89*) ;;
*)
echo "cflags.SH: Adding $opt."
warn="$warn $opt"
;;
esac
+ ;;
+ -Werror=pointer-arith)
+ # -pedantic* covers -Werror=p-a
+ case "$warn" in
+ *-pedantic*) ;;
+ *)
+ echo "cflags.SH: Adding $opt."
+ warn="$warn $opt"
+ ;;
+ esac
+ ;;
+ *)
+ echo "cflags.SH: Adding $opt."
+ warn="$warn $opt"
+ ;;
esac
fi
;;
esac
;;
esac
+ case "$ccflags$warn" in
+ *-pedantic*)
+ overlength=''
+ case "$ccflags$optimize" in
+ *-DDEBUGGING*) overlength='-Wno-overlength-strings' ;;
+ esac
+ for opt2 in -DPERL_GCC_PEDANTIC $overlength
+ do
+ case "$ccflags$warn" in
+ *"$opt2"*) ;;
+ *) echo "cflags.SH: Adding $opt2 because of -pedantic."
+ warn="$warn $opt2" ;;
+ esac
+ done
+ ;;
+ esac
done
;;
esac
case "$gccversion" in
'') ;;
*)
- if [ "$gccansipedantic" = "" ]; then
+ case "$warn$ccflags" in
+ *-pedantic*)
# If we have -Duse64bitint (or equivalent) in effect and the quadtype
- # has become 'long long', gcc -pedantic becomes unbearable (moreso
- # when combined with -Wall) because long long and LL and %lld|%Ld
+ # has become 'long long', gcc -pedantic* becomes unbearable
+ # (moreso when combined with -Wall) because long long and LL and %lld|%Ld
# become warn-worthy. So let's drop the -pedantic in that case.
- case "$quadtype:$sPRId64" in
- "long long"*|*lld*|*Ld*)
- echo "cflags.SH: Removing -pedantic and warn because of quadtype='long long'."
- 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")
- echo "cflags.SH: Removing -pedantic, -std=c89, and -ansi because of ivtype='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 $stdflags|sed -e 's/-std=c89/ /'`
- ;;
+ #
+ # usedtrace (DTrace) uses unportable features (dollars in identifiers,
+ # and gcc statement expressions), it is just easier to turn off pedantic.
+ remove=''
+ case "$quadtype:$ivtype:$sPRId64:$usedtrace" in
+ *"long long"*|*lld*|*Ld*) remove='long long' ;;
+ *) case "$usedtrace" in
+ define) remove='usedtrace' ;;
+ esac
+ ;;
esac
- fi
- # Using certain features (like the gcc statement expressions)
- # requires knowing whether -pedantic has been specified.
- case "$warn$ccflags" in
- *-pedantic*)
- echo "cflags.SH: Adding -DPERL_PEDANTIC because of -pedantic."
- warn="$warn -DPERL_GCC_PEDANTIC"
+ case "$remove" in
+ '') ;;
+ *) echo "cflags.SH: Removing -pedantic*, -std=c89, and -ansi because of $remove."
+ ccflags=`echo $ccflags|sed -e 's/-pedantic-errors/ /' -e 's/-pedantic/ /' -e 's/-std=c89/ /' -e 's/-ansi/ /' -e 's/-DPERL_GCC_PEDANTIC/ /'`
+ warn=`echo $warn|sed -e 's/-pedantic-errors/ /' -e 's/-pedantic/ /' -e 's/-ansi/ /' -e 's/-DPERL_GCC_PEDANTIC/ /'`
+ stdflags=`echo $stdflags|sed -e 's/-std=c89/ /'`
+ ;;
+ esac
+ ;;
+ esac
+ ;;
+esac
+
+# Older clang releases are not wise enough for -Wunused-value.
+case "$gccversion" in
+*"Apple LLVM "[34]*|*"Apple LLVM version "[34]*)
+ for f in -Wno-unused-value
+ do
+ echo "cflags.SH: Adding $f because clang version '$gccversion'"
+ warn="$warn $f"
+ done
+ ;;
+esac
+
+# The quadmath Q format specifier will cause -Wformat to whine.
+case "$gccversion" in
+'') ;;
+*) case "$usequadmath" in
+ define)
+ for f in -Wno-format
+ do
+ echo "cflags.SH: Adding $f because of usequadmath."
+ warn="$warn $f"
+ done
;;
esac
;;
# but we remove it just for cleanliness and shorter command lines.
for f in -Wdeclaration-after-statement \
-Werror=declaration-after-statement \
+ -Wc++-compat \
-std=c89
do
- case "$ccflags" in
+ case "$ccflags$warn" in
*"$f"*)
- echo "cflags.SH: Removing $ccflags because of g++."
- ccflags=`echo $ccflags|sed 's/$f/ /'` ;;
+ echo "cflags.SH: Removing $f because of g++."
+ ccflags=`echo $ccflags|sed 's/$f/ /'`
+ warn=`echo $warn|sed 's/$f/ /'`
+ ;;
esac
done
;;
esac
-for f in -Wdeclaration-after-statement -Werror=declaration-after-statement
+for f in -Wdeclaration-after-statement -Werror=declaration-after-statement \
+ -Wpointer-arith -Werror=pointer-arith
do
case "$cppflags" in
*"$f"*)
esac
done
+# If usethreads and clang, add -Wthread-safety for clang 3.6 or later.
+# gccversion is defined also for clang, because compat, use that for matching.
+# Apple overwrites clang version with XCode version, see hints/darwin.sh
+# for the gory details. Aggressively forward-proofing.
+case "$usethreads" in
+define)
+case "$gccversion" in
+*" Clang 3."[56789]*|*" Clang "[456]*|*"Apple LLVM 6.1"*|*"Apple LLVM "[789]*)
+ for f in -Wthread-safety
+ do
+ case " $warn " in
+ *" $f "*) ;; # Skip if already there.
+ *)
+ echo "cflags.SH: Adding $f because usethreads and clang and gccversion '$gccversion'"
+ warn="$warn $f"
+ ;;
+ esac
+ done
+;;
+esac
+;;
+esac
+
+echo "cflags.SH: cc = $cc"
+echo "cflags.SH: ccflags = $ccflags"
+echo "cflags.SH: stdflags = $stdflags"
+echo "cflags.SH: optimize = $optimize"
+echo "cflags.SH: warn = $warn"
+
# Code to set any extra flags here.
extra=''
+# Protect double or single quotes for better restoring of ccflags.
+myccflags=`echo $ccflags | sed -e 's/"/\\\"/g' -e "s/'/\\\'/g"`
+
echo "Extracting cflags (with variable substitutions)"
# This section of the file will have variable substitutions done on it.
# Move anything that needs config subs from !NO!SUBS! section to !GROK!THIS!.
# This file is generated by cflags.SH
# Used to restore possible edits by cflags.SH.
-myccflags="$ccflags"
+myccflags="$myccflags"
+
# Extra warnings, used e.g. for gcc.
warn="$warn"
# Extra standardness.
# allow variables like toke_cflags to be evaluated
- if echo $file | grep -v / >/dev/null
- then
- eval 'eval ${'"${file}_cflags"'-""}'
- fi
+ case "$file" in
+ */*) ;;
+ *) eval 'eval ${'"${file}_cflags"'-""}' ;;
+ esac
# or customize here
case "$file" in
+ regcomp) : work around http://bugs.debian.org/754054
+ case $archname in
+ mips-*|mipsel-*)
+ optimize="$optimize -fno-tree-vrp";;
+ esac;;
*) ;;
# Customization examples follow.
toke) optimize=-O0 ;;
esac
- # Can we perhaps use $ansi2knr here
echo "$cc -c -DPERL_CORE $ccflags $stdflags $optimize $warn $extra"
. $TOP/config.sh
https://perl5.git.perl.org / perl5.git / blobdiff