X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/1c3d792e8fc9c2a36edfbd6c01156ef7e635040f..85efc3a51ca0ee5724a80b554624140f51d5305c:/cflags.SH

diff --git a/cflags.SH b/cflags.SH
old mode 100644
new mode 100755
index 52a122e..ece6548
--- a/cflags.SH
+++ b/cflags.SH
@@ -1,80 +1,334 @@
-case $CONFIG in
+case $PERL_CONFIG_SH in
 '')
-    if test ! -f config.sh; then
-	ln ../config.sh . || \
-	ln ../../config.sh . || \
-	ln ../../../config.sh . || \
-	(echo "Can't find config.sh."; exit 1)
-    fi 2>/dev/null
-    . ./config.sh
-    ;;
+	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
 
+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="$warn -Wall" ;;
+    esac
+    ;;
+esac
+
+# Create a test source file for testing what options can be fed to
+# gcc in this system; include a selection of most common and commonly
+# hairy include files.
+
+cat >_cflags.c <<__EOT__
+#include "EXTERN.h"
+#include "perl.h"
+/* The stdio.h, errno.h, and setjmp.h should be there in any ANSI C89. */
+#include <stdio.h>
+#include <errno.h>
+#include <setjmp.h>
+/* Just in case the inclusion of perl.h did not
+ * pull in enough system headers, let's try again. */
+#ifdef I_STDLIB
+#include <stdlib.h>
+#endif
+#ifdef I_STDDEF
+#include <stddef.h>
+#endif
+#ifdef I_STDARG
+#include <stdarg.h>
+#endif
+#ifdef I_LIMITS
+#include <limits.h>
+#endif
+#ifdef I_DIRENT
+#include <dirent.h>
+#endif
+#ifdef I_UNISTD
+#include <unistd.h>
+#endif
+#ifdef I_SYSTYPES
+#include <sys/types.h>
+#endif
+#ifdef I_SYSPARAM
+#include <sys/param.h>
+#endif
+#ifdef I_SYSRESOURCE
+#include <sys/resource.h>
+#endif
+#ifdef I_SYSSELECT
+#include <sys/select.h>
+#endif
+#if defined(HAS_SOCKET) && !defined(VMS) && !defined(WIN32) /* See perl.h. */
+#include <sys/socket.h>
+#endif
+#ifdef I_SYSSTAT
+#include <sys/stat.h>
+#endif
+#ifdef I_SYSTIME
+#include <sys/time.h>
+#endif
+#ifdef I_SYSTIMES
+#include <sys/times.h>
+#endif
+#ifdef I_SYSWAIT
+#include <sys/wait.h>
+#endif
+/* The gcc -ansi can cause a lot of noise in Solaris because of:
+ /usr/include/sys/resource.h:148: warning: 'struct rlimit64' declared inside parameter list
+ */
+int main(int argc, char *argv[]) {
+
+/* Add here test code found to be problematic in some gcc platform. */
+
+/* Off_t/off_t is a struct in Solaris with largefiles, and with gcc -ansi
+ * that struct cannot be compared in some gcc releases with a flat
+ * integer, such as a STRLEN. */
+
+  Off_t t0a = 2;
+  STRLEN t0b = 3;
+  int t0c = t0a == t0b;
+
+  return 0;
+}
+__EOT__
+
+stdflags=''
+
+# Further gcc warning options.
+case "$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
+    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
+          *"unrecognized"*) ;;
+          *"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 "$gccversion" in
+'') ;;
+*)
+  # If we have -Duse64bitint (or equivalent) in effect and the quadtype
+  # has become 'long long', gcc -pedantic becomes unbearable (moreso
+  # when combined with -Wall) because long long and LL and %lld|%Ld
+  # become warn-worthy.  So let's drop the -pedantic in that case.
+  case "$quadtype:$sPRId64" in
+  "long long"*|*lld*|*Ld*)
+    ccflags="`echo $ccflags|sed 's/-pedantic/ /'`"
+    warn="`echo $warn|sed 's/-pedantic/ /'`"
+    ;;
+  esac
+  # Using certain features (like the gcc statement expressions)
+  # requires knowing whether -pedantic has been specified.
+  case "$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 "	  CFLAGS = "'
+1) also='echo 1>&2 "	  CCCMD = "'
 esac
 
 case $# in
 0) set *.c; echo "The current C flags are:" ;;
-*) set `echo "$* " | sed 's/\.o /.c /g'`
 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" ;;
+    *) 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
-    array.c) ;;
-    cmd.c) ;;
-    cons.c) ;;
-    consarg.c) ;;
-    doarg.c) ;;
-    doio.c) ;;
-    dolist.c) ;;
-    dump.c) ;;
-    eval.c) ;;
-    form.c) ;;
-    hash.c) ;;
-    malloc.c) ;;
-    perl.c) ;;
-    perly.c) ;;
-    regcomp.c) ;;
-    regexec.c) ;;
-    stab.c) ;;
-    str.c) ;;
-    toke.c) ;;
-    usersub.c) ;;
-    util.c) ;;
-    tarray.c) ;;
-    tcmd.c) ;;
-    tcons.c) ;;
-    tconsarg.c) ;;
-    tdoarg.c) ;;
-    tdoio.c) ;;
-    tdolist.c) ;;
-    tdump.c) ;;
-    teval.c) ;;
-    tform.c) ;;
-    thash.c) ;;
-    tmalloc.c) ;;
-    tperl.c) ;;
-    tperly.c) ;;
-    tregcomp.c) ;;
-    tregexec.c) ;;
-    tstab.c) ;;
-    tstr.c) ;;
-    ttoke.c) ;;
-    tusersub.c) ;;
-    tutil.c) ;;
+    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
 
-    echo "$ccflags $optimize $large $split"
-    eval "$also $ccflags $optimize $large $split"
+case "$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
+
+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