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 -pedantic -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 $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" !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 "$file" in DB_File) ;; GDBM_File) ;; NDBM_File) ;; ODBM_File) ;; POSIX) ;; SDBM_File) ;; av) ;; byterun) ;; deb) ;; dl) ;; doio) ;; doop) ;; dump) ;; globals) ;; gv) ;; hv) ;; locale) ;; madly) ;; main) ;; malloc) ;; mg) ;; miniperlmain) ;; numeric) ;; op) ;; opmini) ;; pad) ;; perl) ;; perlapi) ;; perlmain) ;; perly) ;; pp) ;; pp_ctl) ;; pp_hot) ;; pp_pack) ;; pp_sort) ;; pp_sys) ;; regcomp) ;; regexec) ;; run) ;; scope) ;; sv) ;; taint) ;; toke) ;; universal) ;; usersub) ;; utf8) ;; util) ;; xsutils) ;; *) ;; esac case "$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 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 $extra" eval "$also "'"$cc -DPERL_CORE -c $ccflags $stdflags $optimize $warn $extra"' . $TOP/config.sh done !NO!SUBS! chmod 755 cflags $eunicefix cflags