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executable file 371 lines (334 sloc) 9.608 kb
case $PERL_CONFIG_SH in
'')
if test -f config.sh; then TOP=.;
elif test -f ../config.sh; then TOP=..;
elif test -f ../../config.sh; then TOP=../..;
elif test -f ../../../config.sh; then TOP=../../..;
elif test -f ../../../../config.sh; then TOP=../../../..;
else
echo "Can't find config.sh."; exit 1
fi
. $TOP/config.sh
;;
esac
: This forces SH files to create target in same directory as SH file.
: This is so that make depend always knows where to find SH derivatives.
case "$0" in
*/*) 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
case "$gccversion" in
'') ;;
Intel*) ;; # The Intel C++ plays gcc on TV but is not really it.
*) case "$ccflags" in
*-Wall*) ;;
*) warn="$warn -Wall" ;;
esac
;;
esac
# Create a test source file for testing what options can be fed to
# gcc in this system; include a selection of most common and commonly
# hairy include files.
cat >_cflags.c <<__EOT__
#include "EXTERN.h"
#include "perl.h"
/* The stdio.h, errno.h, and setjmp.h should be there in any ANSI C89. */
#include <stdio.h>
#include <errno.h>
#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
#ifdef I_UNISTD
#include <unistd.h>
#endif
#ifdef I_SYS_TYPES
#include <sys/types.h>
#endif
#ifdef I_SYS_PARAM
#include <sys/param.h>
#endif
#ifdef I_SYS_RESOURCE
#include <sys/resource.h>
#endif
#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_SYS_STAT
#include <sys/stat.h>
#endif
#ifdef I_SYS_TIME
#include <sys/time.h>
#endif
#ifdef I_SYS_TIMES
#include <sys/times.h>
#endif
#ifdef I_SYS_WAIT
#include <sys/wait.h>
#endif
/* The gcc -ansi can cause a lot of noise in Solaris because of:
/usr/include/sys/resource.h:148: warning: 'struct rlimit64' declared inside parameter list
*/
int main(int argc, char *argv[]) {
/* Add here test code found to be problematic in some gcc platform. */
/* Off_t/off_t is a struct in Solaris with largefiles, and with gcc -ansi
* 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;
/* 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. 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 -std=c89 -W -Wextra -Wdeclaration-after-statement \
-Wendif-labels -Wc++-compat -Wwrite-strings
do
case " $ccflags " in
*" $opt "*) ;; # Skip if already there.
*) rm -f _cflags$_exe
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
-std*) stdflags="$stdflags $opt" ;;
*) warn="$warn $opt" ;;
esac
fi
;;
esac
;;
esac
done
;;
esac
rm -f _cflags.c _cflags$_exe
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
# Code to set any extra flags here.
extra=''
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!.
: Protect any dollar signs and backticks that you do not want interpreted
: by putting a backslash in front. You may delete these comments.
rm -f cflags
$spitshell >cflags <<!GROK!THIS!
$startsh
# Extra warnings, used e.g. for gcc.
warn="$warn"
# Extra standardness.
stdflags="$stdflags"
# Extra extra.
extra="$extra"
# what do executables look like?
_exe="$_exe"
!GROK!THIS!
: In the following dollars and backticks do not need the extra backslash.
$spitshell >>cflags <<'!NO!SUBS!'
case $PERL_CONFIG_SH in
'')
if test -f config.sh; then TOP=.;
elif test -f ../config.sh; then TOP=..;
elif test -f ../../config.sh; then TOP=../..;
elif test -f ../../../config.sh; then TOP=../../..;
elif test -f ../../../../config.sh; then TOP=../../../..;
else
echo "Can't find config.sh."; exit 1
fi
. $TOP/config.sh
;;
esac
: syntax: cflags [optimize=XXX] [file[.suffix]]
: displays the compiler command line for file
case "X$1" in
Xoptimize=*|X"optimize=*")
eval "$1"
shift
;;
esac
also=': '
case $# in
1) also='echo 1>&2 " CCCMD = "'
esac
case $# in
0) set *.c; echo "The current C flags are:" ;;
esac
set `echo "$* " | sed -e 's/\.[oc] / /g' -e 's/\.obj / /g' -e "s/\\$obj_ext / /g"`
for file do
case "$#" in
1) ;;
*) echo $n " $file.c $c" ;;
esac
: allow variables like toke_cflags to be evaluated
if echo $file | grep -v / >/dev/null
then
eval 'eval ${'"${file}_cflags"'-""}'
fi
: or customize here
case "$file" in
DB_File) ;;
GDBM_File) ;;
NDBM_File) ;;
ODBM_File) ;;
POSIX) ;;
SDBM_File) ;;
av) ;;
byterun) ;;
deb) ;;
dl) ;;
doio) ;;
doop) ;;
dump) ;;
globals) ;;
gv) ;;
hv) ;;
locale) ;;
madly) ;;
main) ;;
malloc) ;;
mg) ;;
miniperlmain) ;;
numeric) ;;
op) ;;
opmini) ;;
pad) ;;
perl) ;;
perlapi) ;;
perlmain) ;;
perly) ;;
pp) ;;
pp_ctl) ;;
pp_hot) ;;
pp_pack) ;;
pp_sort) ;;
pp_sys) ;;
regcomp) ;;
regexec) ;;
run) ;;
scope) ;;
sv) ;;
taint) ;;
toke) ;;
universal) ;;
usersub) ;;
utf8) ;;
util) ;;
*) ;;
esac
case "$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
: Can we perhaps use $ansi2knr here
echo "$cc -c -DPERL_CORE $ccflags $stdflags $optimize $warn $extra"
eval "$also "'"$cc -DPERL_CORE -c $ccflags $stdflags $optimize $warn $extra"'
. $TOP/config.sh
# end per file behaviour
done
!NO!SUBS!
chmod 755 cflags
$eunicefix cflags
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