X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/26102cc7c0c3b613cde3c9439c90b8fb1ab06a52..ab3bbdeb874c2a82798e2c9cc4b61acf5866b410:/cflags.SH

diff --git a/cflags.SH b/cflags.SH
index c397d40..bc22c2c 100755
--- a/cflags.SH
+++ b/cflags.SH
@@ -16,6 +16,93 @@ esac
 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="$warn -Wall" ;;
+    esac
+    ;;
+esac
+
+# The gcc -ansi -pedantic require their own dance, too.
+case "$gccversion" in
+'') ;;
+Intel*) ;; # Is that you, Intel C++?
+*)  case "$gccansipedantic" in
+    define)
+	case "$gccversion" in
+	[12]*) ;; # gcc versions 1 (gasp!) and 2 are not good for this.
+	*)  case "$osname" in
+	    # Add -ansi -pedantic only for known platforms.
+	    aix|dec_osf|freebsd|hpux|irix|linux)
+		ansipedantic="-ansi -pedantic" ;;
+	    solaris)
+# Can't add -ansi for Solaris.
+# Off_t/off_t is a struct in Solaris with largefiles, and with -ansi
+# that struct cannot be compared with a flat integer, such as a STRLEN.
+# The -ansi will also cause a lot of noise in Solaris because of:
+# /usr/include/sys/resource.h:148: warning: `struct rlimit64' declared inside parameter list
+		ansipedantic="-pedantic" ;;
+	    esac
+	    for i in $ansipedantic
+	    do
+		case "$ccflags" in
+		*$i*) ;;
+		*) warn="$warn $i" ;;
+		esac
+	    done
+	    case "$warn$ccflags" in
+	    *-pedantic*) warn="$warn -DPERL_GCC_PEDANTIC" ;;
+	    esac
+	    ;;
+	esac
+	;;
+    esac
+    ;;
+esac
+
+# Further gcc warning options.
+case "$gccversion" in
+'') ;;
+[12]*) ;;
+Intel*) ;; # Haven't we been through this already?
+*)  for opt in '' extra declaration-after-statement endif-labels
+    do
+       case " $ccflags " in
+       *"-W$opt "*) ;;
+       *) case "`echo >_cflags.c | $cc -W$opt -c _cflags.c -o _cflags.o 2>&1`" in
+          *"unrecognized"*) ;;
+          *"Invalid"*) ;;
+          *) warn="$warn -W$opt" ;;
+          esac
+          ;;
+       esac
+       rm -f _cflags.c cflags.o
+    done
+    ;;
+esac
+
+
+stdflags=''
+
+# Be strict C89 for gcc (but not for g++).
+case "$gccversion" in
+'') ;;
+Intel*) ;; # Nice try, Intel C++.
+12]*) ;; # Go easy on the older versions of gcc.
+*) case "$cc" in
+   *g++*) ;;
+   *) stdflags="$stdflags -std=c89" ;;
+   esac
+   ;;
+esac
+
 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!.
@@ -24,6 +111,12 @@ echo "Extracting cflags (with variable substitutions)"
 rm -f cflags
 $spitshell >cflags <<!GROK!THIS!
 $startsh
+
+# Extra warnings, used e.g. for gcc.
+warn="$warn"
+# Extra standardness.
+stdflags="$stdflags"
+
 !GROK!THIS!
 
 : In the following dollars and backticks do not need the extra backslash.
@@ -42,6 +135,9 @@ case $PERL_CONFIG_SH in
 	;;
 esac
 
+: syntax: cflags [optimize=XXX] [file[.suffix]]
+: displays the compiler command line for file
+
 case "X$1" in
 Xoptimize=*|X"optimize=*")
 	eval "$1"
@@ -49,20 +145,6 @@ Xoptimize=*|X"optimize=*")
 	;;
 esac
 
-perltype=''
-optdebug=''	# ensure -g used if building a -DDEBUGGING libperl
-case $# in
-2) case $1 in
-    *perl.*)    perltype='';;
-    *perld.*)   perltype='-DDEBUGGING'; optdebug='-g' ;;
-    *perle.*)   perltype='-DEMBED';;
-    *perlde.*)  perltype='-DDEBUGGING -DEMBED'; optdebug='-g' ;;
-    *perlm.*)   perltype='-DEMBED -DMULTIPLICITY';;
-    *perldm.*)  perltype='-DDEBUGGING -DEMBED -DMULTIPLICITY'; optdebug='-g' ;;
-    esac
-    shift ;;
-esac
-
 also=': '
 case $# in
 1) also='echo 1>&2 "	  CCCMD = "'
@@ -104,15 +186,19 @@ for file do
     doio) ;;
     doop) ;;
     dump) ;;
+    globals) ;;
     gv) ;;
     hv) ;;
     locale) ;;
+    madly) ;;
     main) ;;
     malloc) ;;
     mg) ;;
     miniperlmain) ;;
     numeric) ;;
     op) ;;
+    opmini) ;;
+    pad) ;;
     perl) ;;
     perlapi) ;;
     perlmain) ;;
@@ -121,6 +207,7 @@ for file do
     pp_ctl) ;;
     pp_hot) ;;
     pp_pack) ;;
+    pp_sort) ;;
     pp_sys) ;;
     regcomp) ;;
     regexec) ;;
@@ -129,18 +216,21 @@ for file do
     sv) ;;
     taint) ;;
     toke) ;;
+    universal) ;;
     usersub) ;;
+    utf8) ;;
     util) ;;
+    xsutils) ;;
     *) ;;
     esac
 
-	if test "X$optdebug" != "X"; then
-		optimize="$optdebug"
-	fi
+if test -f .patch; then
+  ccflags="-DPERL_PATCHNUM=`cat .patch` $ccflags"
+fi
 
     : Can we perhaps use $ansi2knr here
-    echo "$cc -c -DPERL_CORE $ccflags $optimize $perltype"
-    eval "$also "'"$cc -DPERL_CORE -c $ccflags $optimize $perltype"'
+    echo "$cc -c -DPERL_CORE $ccflags $stdflags $optimize $warn"
+    eval "$also "'"$cc -DPERL_CORE -c $ccflags $stdflags $optimize $warn"'
 
     . $TOP/config.sh