X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=Configure;h=68dc00ef8e063fdf4abc7c54572f1c65e2ea1429;hb=33b5f13c2468a991d2b495f02a62b59163be82af;hp=d9bd77a861c64c1be21b4218c9d4c49fc2e996a8;hpb=f607920a165f3c14b9c61dc74e535bdc6aa1904c;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/Configure b/Configure
index d9bd77a..68dc00e 100755
--- a/Configure
+++ b/Configure
@@ -17,10 +17,16 @@
 # comp.sources.misc and is available on CPAN under authors/id/RAM so
 # you may fetch it yourself from your nearest archive site.)
 #
+#
+# Though this script was generated by metaconfig, it is OK to send
+# patches against it. It's up to the Configure pumpkin to backport
+# the patch to the metaunits if it is accepted.
+# See Porting/pumpkin.pod for more information on metaconfig.
+#
 
 # $Id: Head.U,v 3.0.1.9 1997/02/28 15:02:09 ram Exp $
 #
-# Generated on Tue May 31 08:06:05 CEST 2005 [metaconfig 3.0 PL70]
+# Generated on Wed Mar  8 09:08:03 CET 2006 [metaconfig 3.0 PL70]
 # (with additional metaconfig patches by perlbug@perl.org)
 
 cat >c1$$ <<EOF
@@ -348,6 +354,8 @@ d_attribute_unused=''
 d_attribute_warn_unused_result=''
 d_bcmp=''
 d_bcopy=''
+d_builtin_choose_expr=''
+d_builtin_expect=''
 d_bzero=''
 d_casti32=''
 castflags=''
@@ -356,6 +364,7 @@ d_chown=''
 d_chroot=''
 d_chsize=''
 d_class=''
+d_clearenv=''
 d_closedir=''
 d_void_closedir=''
 d_cmsghdr_s=''
@@ -434,6 +443,7 @@ d_fsync=''
 d_ftello=''
 d_ftime=''
 d_gettimeod=''
+d_futimes=''
 d_Gconvert=''
 d_getcwd=''
 d_getespwnam=''
@@ -544,6 +554,8 @@ longlongsize=''
 d_lseekproto=''
 d_lstat=''
 d_madvise=''
+d_malloc_good_size=''
+d_malloc_size=''
 d_mblen=''
 d_mbstowcs=''
 d_mbtowc=''
@@ -671,6 +683,8 @@ d_sigaction=''
 d_sigprocmask=''
 d_sigsetjmp=''
 usesitecustomize=''
+d_snprintf=''
+d_vsnprintf=''
 d_sockatmark=''
 d_sockatmarkproto=''
 d_msg_ctrunc=''
@@ -686,6 +700,7 @@ sockethdr=''
 socketlib=''
 d_socklen_t=''
 d_socks5_init=''
+d_sprintf_returns_strlen=''
 d_sqrtl=''
 d_srand48_r=''
 srand48_r_proto=''
@@ -756,6 +771,7 @@ d_semctl_semid_ds=''
 d_semctl_semun=''
 d_union_semun=''
 d_unordered=''
+d_unsetenv=''
 d_usleep=''
 d_usleepproto=''
 d_ustat=''
@@ -946,9 +962,13 @@ sPRIgldbl=''
 sSCNfldbl=''
 lseeksize=''
 lseektype=''
+mad=''
 make_set_make=''
 d_mymalloc=''
 freetype=''
+madlyh=''
+madlyobj=''
+madlysrc=''
 mallocobj=''
 mallocsrc=''
 malloctype=''
@@ -3116,18 +3136,21 @@ EOM
 		domainos) osname=apollo
 			osvers="$3"
 			;;
-		dgux)	osname=dgux 
+		dgux)	osname=dgux
+			osvers="$3"
+			;;
+		dragonfly) osname=dragonfly
 			osvers="$3"
 			;;
 		dynixptx*) osname=dynixptx
 			osvers=`echo "$4"|sed 's/^v//'`
 			;;
-		freebsd) osname=freebsd 
+		freebsd) osname=freebsd
 			osvers="$3" ;;
 		genix)	osname=genix ;;
 		gnu)	osname=gnu
 			osvers="$3" ;;
-		hp*)	osname=hpux 
+		hp*)	osname=hpux
 			osvers=`echo "$3" | $sed 's,.*\.\([0-9]*\.[0-9]*\),\1,'`
 			;;
 		irix*)	osname=irix
@@ -3223,7 +3246,7 @@ EOM
 			*freebsd*) ;;
 			svr*)
 				: svr4.x or possibly later
-				case "svr$3" in	
+				case "svr$3" in
 				${osname}*)
 					osname=svr$3
 					osvers=$4
@@ -3286,7 +3309,7 @@ EOM
 			osvers="$5"
 		fi
 	fi
-	
+
         case "$targetarch" in
         '') ;;
         *)  hostarch=$osname
@@ -5883,7 +5906,7 @@ if $test -r $rsrc/patchlevel.h;then
 	api_revision=`awk '/define[ 	]+PERL_API_REVISION/ {print $3}' $rsrc/patchlevel.h`
 	api_version=`awk '/define[ 	]+PERL_API_VERSION/ {print $3}' $rsrc/patchlevel.h`
 	api_subversion=`awk '/define[ 	]+PERL_API_SUBVERSION/ {print $3}' $rsrc/patchlevel.h`
-       perl_patchlevel=`grep ',"DEVEL[0-9][0-9]*"' $rsrc/patchlevel.h|sed 's/[^0-9]//g'`
+	perl_patchlevel=`egrep 'define PERL_PATCHNUM [0-9][0-9]|,"MAINT[0-9][0-9]*"' $rsrc/patchlevel.h|sed 's/[^0-9]//g'`
 else
 	revision=0
 	patchlevel=0
@@ -5894,8 +5917,8 @@ else
 	perl_patchlevel=0
 	$echo "(You do not have patchlevel.h.  Eek.)"
 fi
-if $test -r $rsrc/.patch ; then  
-	if $test "`cat $rsrc/.patch`" -gt "$perl_patchlevel" ; then
+if $test -r $rsrc/.patch ; then
+	if $test "X$perl_patchlevel" = "X" || $test "`cat $rsrc/.patch`" -gt "$perl_patchlevel" ; then
 		perl_patchlevel=`cat $rsrc/.patch`
 	fi
 fi
@@ -7758,7 +7781,7 @@ any other libraries needed on this system (such as -lm, etc.).  Since
 your system supports dynamic loading, it is probably possible to build
 a shared libperl.$so.  If you will have more than one executable linked
 to libperl.$so, this will significantly reduce the size of each
-executable, but it may have a noticeable affect on performance.  The
+executable, but it may have a noticeable effect on performance.  The
 default is probably sensible for your system.
 $also
 
@@ -7878,7 +7901,7 @@ if "$useshrplib"; then
 	solaris)
 		xxx="-R $shrpdir"
 		;;
-	freebsd|netbsd|openbsd|interix)
+	freebsd|netbsd|openbsd|interix|dragonfly)
 		xxx="-Wl,-R$shrpdir"
 		;;
 	bsdos|linux|irix*|dec_osf|gnu*)
@@ -10224,6 +10247,71 @@ esac
 set d_bsdsetpgrp
 eval $setvar
 $rm -f try try.*
+: Look for GCC-style __builtin_choose_expr
+case "$d_builtin_choose_expr" in
+'')
+    echo " "
+    echo "Checking whether your compiler can handle __builtin_choose_expr ..." >&4
+    $cat >try.c <<'EOCP'
+#include <assert.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+#define SYRINX(x) __builtin_choose_expr( x, (1056*2), (103*50) )
+
+int main(void) {
+    assert( SYRINX(1) == 2112 );
+    assert( SYRINX(1) != 5150 );
+    assert( SYRINX(0) == 5150 );
+    assert( SYRINX(0) != 2112 );
+    puts( "All good!" );
+    exit(0);
+}
+
+EOCP
+    set try
+    if eval $compile; then
+	echo "Your C compiler supports __builtin_choose_expr."
+	val="$define"
+    else
+	echo "Your C compiler doesn't seem to understand __builtin_choose_expr."
+	val="$undef"
+    fi
+;;
+*) val="$d_builtin_choose_expr" ;;
+esac
+
+set d_builtin_choose_expr
+eval $setvar
+$rm -f try.* try core core.try.*
+
+: Look for GCC-style __builtin_expect
+case "$d_builtin_expect" in
+'')
+    echo " "
+    echo "Checking whether your compiler can handle __builtin_expect ..." >&4
+    $cat >builtin.c <<'EOCP'
+int main(void) {
+    int n = 50;
+    if ( __builtin_expect(n, 0) ) n = 1;
+}
+EOCP
+    set try
+    if eval $compile; then
+	echo "Your C compiler supports __builtin_choose_expr."
+	val="$define"
+    else
+	echo "Your C compiler doesn't seem to understand __builtin_choose_expr."
+	val="$undef"
+    fi
+    ;;
+*) val="$d_builtin_expect" ;;
+esac
+
+set d_builtin_expect
+eval $setvar
+$rm -f try.* try core core.try.*
+
 : see if bzero exists
 set bzero d_bzero
 eval $inlibc
@@ -10495,6 +10583,10 @@ eval $inlibc
 set class d_class
 eval $inlibc
 
+: see if clearenv exists
+set clearenv d_clearenv
+eval $inlibc
+
 hasstruct='varname=$1; struct=$2; shift; shift;
 while $test $# -ge 2; do
 	case "$1" in
@@ -11025,6 +11117,7 @@ int main() {
 		exit(1);
 }
 EOM
+val=$undef
 set dirfd
 if eval $compile; then
 	val="$define"
@@ -12539,6 +12632,41 @@ case "$longsize" in
 8) echo "(Your long is 64 bits, so you could use ftell.)" ;;
 esac
 
+d_futimes="$undef"
+: check for a working futimes
+echo " "
+echo "Checking for a working futimes()" >&4
+$cat >try.c <<EOCP
+#include <stdio.h>
+#include <sys/time.h>
+#include <errno.h>
+#include <fcntl.h>
+
+int main ()
+{
+    int fd, rv;
+    fd = open ("try.c", O_RDWR);
+    if (-1 == fd) exit (1);
+    rv = futimes (fd, NULL);
+    exit (rv == -1 ? errno : 0);
+}
+EOCP
+set try
+if eval $compile; then
+    `$run ./try`
+    rc=$?
+    case "$rc" in
+	0)  echo "Yes, it does" >&4
+	    d_futimes="$define"
+	    ;;
+	*)  echo "No, it has futimes, but it isn't working ($rc) (probably harmless)\n" >&4
+	    ;;
+    esac
+else
+    echo "No, it does not (probably harmless)\n" >&4
+fi
+$rm -f try.* try core core.try.*
+
 : see if getcwd exists
 set getcwd d_getcwd
 eval $inlibc
@@ -14240,6 +14368,14 @@ eval $inlibc
 set madvise d_madvise
 eval $inlibc
 
+: see if malloc_size exists
+set malloc_size d_malloc_size
+eval $inlibc
+
+: see if malloc_size_good exists
+set malloc_good_size d_malloc_good_size
+eval $inlibc
+
 : see if mblen exists
 set mblen d_mblen
 eval $inlibc
@@ -14867,7 +15003,7 @@ int checkit($nvtype d, char *where) {
 	fail += *p++;
 
     if (!fail)
-        return 0;
+	return 0;
 
     p = (char *)&d;
     printf("No - %s: 0x", where);
@@ -15682,9 +15818,9 @@ $define)
 #endif
 END
     : see whether semctl IPC_STAT can use union semun
-    val="$undef"
     case "$d_semctl_semun" in
     '')
+      val="$undef"
       $cat > try.c <<END
 #include <sys/types.h>
 #include <sys/ipc.h>
@@ -15723,7 +15859,7 @@ int main() {
 	    printf("semctl IPC_STAT failed: errno = %d\n", errno);
 #	ifdef IPC_RMID
 	if (semctl(sem, 0, IPC_RMID, arg) != 0)
-#   	endif /* IPC_RMID */
+#	endif /* IPC_RMID */
 	    printf("semctl IPC_RMID failed: errno = %d\n", errno);
     } else
 #endif /* IPC_PRIVATE && ... */
@@ -15739,10 +15875,10 @@ END
           esac
       fi
       $rm -f try try.c
+      set d_semctl_semun
+      eval $setvar
       ;;
     esac
-    set d_semctl_semun
-    eval $setvar
     case "$d_semctl_semun" in
     $define)
         echo "You can use union semun for semctl IPC_STAT." >&4
@@ -15754,9 +15890,9 @@ END
     esac
 
     : see whether semctl IPC_STAT can use struct semid_ds pointer
-    val="$undef"
     case "$d_semctl_semid_ds" in
     '')
+      val="$undef"
       $cat > try.c <<'END'
 #include <sys/types.h>
 #include <sys/ipc.h>
@@ -15801,10 +15937,10 @@ END
           esac
       fi
       $rm -f try try.c
+      set d_semctl_semid_ds
+      eval $setvar
       ;;
     esac
-    set d_semctl_semid_ds
-    eval $setvar
     case "$d_semctl_semid_ds" in
     $define)
         echo "You can $also use struct semid_ds* for semctl IPC_STAT." >&4
@@ -16476,6 +16612,71 @@ set d_sigsetjmp
 eval $setvar
 $rm -f try.c try
 
+: see if snprintf exists
+set snprintf d_snprintf
+eval $inlibc
+
+: see if vsnprintf exists
+set vsnprintf d_vsnprintf
+eval $inlibc
+
+case "$d_snprintf-$d_vsnprintf" in
+"$define-$define")
+    $cat <<EOM
+Checking whether your snprintf() and vsnprintf() work okay...
+EOM
+    $cat >try.c <<'EOCP'
+/* v?snprintf testing logic courtesy of Russ Allbery.
+ * According to C99:
+ * - if the buffer is too short it still must be \0-terminated
+ * - if the buffer is too short the potentially required length
+ *   must be returned and not -1
+ * - if the buffer is NULL the potentially required length
+ *   must be returned and not -1 or core dump
+ */
+#include <stdio.h>
+#include <stdarg.h>
+
+char buf[2];
+
+int test (char *format, ...)
+{
+    va_list args;
+    int count;
+
+    va_start (args, format);
+    count = vsnprintf (buf, sizeof buf, format, args);
+    va_end (args);
+    return count;
+}
+
+int main ()
+{
+    return ((test ("%s", "abcd") == 4 && buf[0] == 'a' && buf[1] == '\0'
+             && snprintf (NULL, 0, "%s", "abcd") == 4) ? 0 : 1);
+}
+EOCP
+    set try
+    if eval $compile; then
+	`$run ./try`
+	case "$?" in
+	0) echo "Your snprintf() and vsnprintf() seem to be working okay." ;;
+	*) cat <<EOM >&4
+Your snprintf() and snprintf() don't seem to be working okay.
+EOM
+	   d_snprintf="$undef"
+	   d_vsnprintf="$undef"
+	   ;;
+	esac
+    else
+	echo "(I can't seem to compile the test program--assuming they don't)"
+	d_snprintf="$undef"
+	d_vsnprintf="$undef"
+    fi
+    $rm -f try.* try core core.try.*
+    ;;
+esac
+
 : see if sockatmark exists
 set sockatmark d_sockatmark
 eval $inlibc
@@ -16489,6 +16690,68 @@ eval $hasproto
 set socks5_init d_socks5_init
 eval $inlibc
 
+: see if sprintf returns the length of the string in the buffer as per ANSI
+$echo "Checking whether sprintf returns the length of the string..." >&4
+$cat <<EOP >try.c
+#include <stdio.h>
+#$i_stdlib I_STDLIB
+#ifdef I_STDLIB
+#include <stdlib.h>
+#endif
+#$i_string I_STRING
+#ifdef I_STRING
+#  include <string.h>
+#else
+#  include <strings.h>
+#endif
+#$i_math I_MATH
+#ifdef I_MATH
+#include <math.h>
+#endif
+
+char buffer[256];
+
+int check (size_t expect, int test) {
+  size_t got = strlen(buffer);
+  if (expect == got)
+    return 0;
+
+  printf("expected %ld, got %ld in test %d '%s'\n", (long) expect, (long) got,
+       test, buffer);
+  exit (test);
+}
+
+int main(int argc, char **argv) {
+  int test = 0;
+
+  check(sprintf(buffer, ""), ++test);
+  check(sprintf(buffer, "%s %s", "perl", "rules"), ++test);
+  check(sprintf(buffer, "I like %g", atan2(0,-1)), ++test);
+
+  return 0;
+}
+EOP
+set try
+
+d_sprintf_returns_strlen="$undef"
+if eval $compile; then
+    xxx="`$run ./try`"
+    case "$?" in
+	0) cat >&4 <<EOM
+sprintf returns the length of the string (as ANSI says it should)
+EOM
+	d_sprintf_returns_strlen="$define"
+	;;
+	*) cat >&4 <<EOM
+sprintf does not return the length of the string (how old is this system?)
+EOM
+	d_sprintf_returns_strlen="$undef"
+        ;;
+    esac
+fi
+
+$rm -f try.* try
+
 : see if srand48_r exists
 set srand48_r d_srand48_r
 eval $inlibc
@@ -17443,6 +17706,10 @@ eval $inlibc
 set unordered d_unordered
 eval $inlibc
 
+: see if unsetenv exists
+set unsetenv d_unsetenv
+eval $inlibc
+
 : see if usleep exists
 set usleep d_usleep
 eval $inlibc
@@ -18698,6 +18965,34 @@ EOM
 *)  groupstype="$gidtype";;
 esac
 
+
+case "$mad" in
+$define|true|[yY]*)	dflt='y' ;;
+*)			dflt='n' ;;
+esac
+cat <<EOM
+
+Would you like to build with Misc Attribute Decoration? This is development
+work leading to a Perl 5 to Perl 6 convertor, which imposes a space and speed
+overhead on the interpreter.
+
+If this doesn't make any sense to you, just accept the default '$dflt'.
+EOM
+rp='Build Perl with MAD?'
+. ./myread
+case "$ans" in
+y|Y)	val="$define"
+	madlyh='madly.h madly.act madly.tab'
+	madlysrc='madly.c'
+	madlyobj="madly$_o" ;;
+*)	val="$undef"
+	madlyh=''
+	madlysrc=''
+	madlyobj='' ;;
+esac
+set mad
+eval $setvar
+
 echo " "
 echo "Checking if your $make program sets \$(MAKE)..." >&4
 case "$make_set_make" in
@@ -19075,7 +19370,15 @@ if $cc -o foobar $ccflags $ldflags foo$_o bar$_a $libs > /dev/null 2>&1 &&
 	$run ./foobar >/dev/null 2>&1; then
 	echo "$ar appears to generate random libraries itself."
 	orderlib=false
-	ranlib=":"
+	if [ "X$ranlib" = "X" ]; then
+	    ranlib=":"
+	fi
+elif $ar s bar$_a >/dev/null 2>&1 &&
+	$cc -o foobar $ccflags $ldflags foo$_o bar$_a $libs > /dev/null 2>&1 &&
+	$run ./foobar >/dev/null 2>&1; then
+		echo "a table of contents needs to be added with '$ar s'."
+		orderlib=false
+		ranlib="$ar s"
 elif $ar ts bar$_a >/dev/null 2>&1 &&
 	$cc -o foobar $ccflags $ldflags foo$_o bar$_a $libs > /dev/null 2>&1 &&
 	$run ./foobar >/dev/null 2>&1; then
@@ -19100,7 +19403,7 @@ else
 		ranlib=":"
 	fi
 fi
-$rm -f foo* bar* 
+$rm -f foo* bar*
 
 : check for type of arguments to select. 
 case "$selecttype" in
@@ -19330,6 +19633,12 @@ int main() {
 #endif
 
 #ifndef NSIG
+#  ifdef _SIG_MAX
+#    define NSIG (_SIG_MAX+1)
+#  endif
+#endif
+
+#ifndef NSIG
 #  ifdef MAXSIG
 #    define NSIG (MAXSIG+1)
 #  endif
@@ -19343,7 +19652,7 @@ int main() {
 
 #ifndef NSIG
 #  ifdef SIGARRAYSIZE
-#    define NSIG (SIGARRAYSIZE+1) /* Not sure of the +1 */
+#    define NSIG SIGARRAYSIZE /* Assume ary[SIGARRAYSIZE] */
 #  endif
 #endif
 
@@ -19682,7 +19991,8 @@ $rm -f try try.*
 
 : see what type of char stdio uses.
 echo " "
-echo '#include <stdio.h>' | $cppstdin $cppminus > stdioh
+echo '#include <stdio.h>' > stdio.c
+$cppstdin $cppminus < stdio.c > stdioh
 if $contains 'unsigned.*char.*_ptr;' stdioh >/dev/null 2>&1 ; then
 	echo "Your stdio uses unsigned chars." >&4
 	stdchar="unsigned char"
@@ -19690,9 +20000,7 @@ else
 	echo "Your stdio uses signed chars." >&4
 	stdchar="char"
 fi
-$rm -f stdioh
-
-
+$rm -f stdio.* stdioh
 
 : see what type uids are declared as in the kernel
 echo " "
@@ -19978,11 +20286,11 @@ set prot.h i_prot
 eval $inhdr
 
 echo " "
-$echo "Guessing which symbols your C compiler and preprocessor define..." >&4 
+$echo "Guessing which symbols your C compiler and preprocessor define..." >&4
 $cat <<'EOSH' > Cppsym.know
 a29k ABI64 aegis AES_SOURCE AIX AIX32 AIX370
 AIX41 AIX42 AIX43 AIX_SOURCE aixpc ALL_SOURCE
-alliant alpha am29000 AM29000 AMD64 amiga AMIGAOS AMIX
+alliant alpha am29000 AM29000 AMD64 amd64 amiga AMIGAOS AMIX
 ansi ANSI_C_SOURCE apollo ardent ARM32 atarist att386 att3b
 BeOS BIG_ENDIAN BIT_MSF bsd BSD bsd43 bsd4_2 bsd4_3 BSD4_3 bsd4_4
 BSD_4_3 BSD_4_4 BSD_NET2 BSD_TIME BSD_TYPES BSDCOMPAT bsdi
@@ -20040,7 +20348,7 @@ USE_BSD USE_FILE_OFFSET64 USE_GNU USE_ISOC9X USE_LARGEFILE USE_LARGEFILE64
 USE_MISC USE_POSIX USE_POSIX199309 USE_POSIX199506 USE_POSIX2
 USE_REENTRANT USE_SVID USE_UNIX98 USE_XOPEN USE_XOPEN_EXTENDED
 USGr4 USGr4_2
-Utek UTek UTS UWIN uxpm uxps vax venix VMESA vms xenix Xenix286
+Utek UTek UTS UWIN uxpm uxps vax venix VMESA vms x86_64 xenix Xenix286
 XOPEN_SOURCE XOPEN_SOURCE_EXTENDED XPG2 XPG2_EXTENDED
 XPG3 XPG3_EXTENDED XPG4 XPG4_EXTENDED
 z8000
@@ -20075,16 +20383,26 @@ cat <<EOSH > Cppsym.try
 $startsh
 cat <<'EOCP' > try.c
 #include <stdio.h>
+#if cpp_stuff == 1
+#define STRINGIFY(a)    "a"
+#endif
+#if cpp_stuff == 42
+#define StGiFy(a)  #a
+#define STRINGIFY(a)    StGiFy(a)
+#endif
+#if $cpp_stuff != 1 && $cpp_stuff != 42
+#   include "Bletch: How does this C preprocessor stringify macros?"
+#endif
 int main() {
 EOCP
 $awk \\
 EOSH
 cat <<'EOSH' >> Cppsym.try
 'length($1) > 0 {
-    printf "#ifdef %s\n#if %s+0\nprintf(\"%s=%%ld\\n\", (long)%s);\n#else\nprintf(\"%s\\n\");\n#endif\n#endif\n", $1, $1, $1, $1, $1
-    printf "#ifdef _%s\n#if _%s+0\nprintf(\"_%s=%%ld\\n\", (long)_%s);\n#else\nprintf(\"_%s\\n\");\n#endif\n#endif\n", $1, $1, $1, $1, $1
-    printf "#ifdef __%s\n#if __%s+0\nprintf(\"__%s=%%ld\\n\", (long)__%s);\n#else\nprintf(\"__%s\\n\");\n#endif\n#endif\n", $1, $1, $1, $1, $1
-    printf "#ifdef __%s__\n#if __%s__+0\nprintf(\"__%s__=%%ld\\n\", (long)__%s__);\n#else\nprintf(\"__%s__\\n\");\n#endif\n#endif\n", $1, $1, $1, $1, $1
+    printf "#ifdef %s\nprintf(\"%s=%%s\\n\", STRINGIFY(%s));\n#endif\n", $1, $1, $1
+    printf "#ifdef _%s\nprintf(\"_%s=%%s\\n\", STRINGIFY(_%s));\n#endif\n", $1, $1, $1
+    printf "#ifdef __%s\nprintf(\"__%s=%%s\\n\", STRINGIFY(__%s));\n#endif\n", $1, $1, $1
+    printf "#ifdef __%s__\nprintf(\"__%s__=%%s\\n\", STRINGIFY(__%s__));\n#endif\n", $1, $1, $1
 }'	 >> try.c
 echo 'return 0;}' >> try.c
 EOSH
@@ -20094,11 +20412,26 @@ case "$osname-$gccversion" in
 irix-) ccflags="\$ccflags -woff 1178" ;;
 os2-*) ccflags="\$ccflags -Zlinker /PM:VIO" ;;
 esac
-$cc -o try $optimize \$ccflags $ldflags try.c $libs && $run ./try
+$cc -o try -Dcpp_stuff=$cpp_stuff $optimize \$ccflags $ldflags try.c $libs && $run ./try | $sed 's/ /\\\\ /g'
 EOSH
 chmod +x Cppsym.try
 $eunicefix Cppsym.try
 ./Cppsym < Cppsym.know > Cppsym.true
+: Add in any linux cpp "predefined macros":
+case "$osname::$gccversion" in
+  *linux*::*.*)
+    tHdrH=_tmpHdr
+    rm -f $tHdrH'.h' $tHdrH
+    touch $tHdrH'.h'
+    if cpp -dM $tHdrH'.h' > $tHdrH'_cppsym.h' && [ -s $tHdrH'_cppsym.h' ]; then
+       sed 's/#define[\ \  ]*//;s/[\ \     ].*$//' <$tHdrH'_cppsym.h' >$tHdrH'_cppsym.real'
+       if [ -s $tHdrH'_cppsym.real' ]; then
+	  cat $tHdrH'_cppsym.real' Cppsym.know | sort | uniq | ./Cppsym | sort | uniq > Cppsym.true
+       fi
+    fi
+    rm -f $tHdrH'.h' $tHdrH'_cppsym.h' $tHdrH'_cppsym.real'
+  ;;
+esac
 : now check the C compiler for additional symbols
 postprocess_cc_v=''
 case "$osname" in
@@ -20130,11 +20463,9 @@ fi
 
 $awk '/\=/ { print $0; next }
 	{ print $0"=1" }' ccsym.raw >ccsym.list
-$awk '/\=/ { print $0; next }
-	{ print $0"=1" }' Cppsym.true >ccsym.true
-$comm -13 ccsym.true ccsym.list >ccsym.own
-$comm -12 ccsym.true ccsym.list >ccsym.com
-$comm -23 ccsym.true ccsym.list >ccsym.cpp
+$comm -13 Cppsym.true ccsym.list >ccsym.own
+$comm -12 Cppsym.true ccsym.list >ccsym.com
+$comm -23 Cppsym.true ccsym.list >ccsym.cpp
 also=''
 if $test -z ccsym.raw; then
 	echo "Your C compiler doesn't seem to define any symbols!" >&4
@@ -20940,6 +21271,8 @@ d_bcopy='$d_bcopy'
 d_bsd='$d_bsd'
 d_bsdgetpgrp='$d_bsdgetpgrp'
 d_bsdsetpgrp='$d_bsdsetpgrp'
+d_builtin_choose_expr='$d_builtin_choose_expr'
+d_builtin_expect='$d_builtin_expect'
 d_bzero='$d_bzero'
 d_casti32='$d_casti32'
 d_castneg='$d_castneg'
@@ -20948,6 +21281,7 @@ d_chown='$d_chown'
 d_chroot='$d_chroot'
 d_chsize='$d_chsize'
 d_class='$d_class'
+d_clearenv='$d_clearenv'
 d_closedir='$d_closedir'
 d_cmsghdr_s='$d_cmsghdr_s'
 d_const='$d_const'
@@ -21016,6 +21350,7 @@ d_fstatvfs='$d_fstatvfs'
 d_fsync='$d_fsync'
 d_ftello='$d_ftello'
 d_ftime='$d_ftime'
+d_futimes='$d_futimes'
 d_getcwd='$d_getcwd'
 d_getespwnam='$d_getespwnam'
 d_getfsstat='$d_getfsstat'
@@ -21099,6 +21434,8 @@ d_longlong='$d_longlong'
 d_lseekproto='$d_lseekproto'
 d_lstat='$d_lstat'
 d_madvise='$d_madvise'
+d_malloc_good_size='$d_malloc_good_size'
+d_malloc_size='$d_malloc_size'
 d_mblen='$d_mblen'
 d_mbstowcs='$d_mbstowcs'
 d_mbtowc='$d_mbtowc'
@@ -21230,12 +21567,14 @@ d_shmget='$d_shmget'
 d_sigaction='$d_sigaction'
 d_sigprocmask='$d_sigprocmask'
 d_sigsetjmp='$d_sigsetjmp'
+d_snprintf='$d_snprintf'
 d_sockatmark='$d_sockatmark'
 d_sockatmarkproto='$d_sockatmarkproto'
 d_socket='$d_socket'
 d_socklen_t='$d_socklen_t'
 d_sockpair='$d_sockpair'
 d_socks5_init='$d_socks5_init'
+d_sprintf_returns_strlen='$d_sprintf_returns_strlen'
 d_sqrtl='$d_sqrtl'
 d_srand48_r='$d_srand48_r'
 d_srandom_r='$d_srandom_r'
@@ -21296,6 +21635,7 @@ d_umask='$d_umask'
 d_uname='$d_uname'
 d_union_semun='$d_union_semun'
 d_unordered='$d_unordered'
+d_unsetenv='$d_unsetenv'
 d_usleep='$d_usleep'
 d_usleepproto='$d_usleepproto'
 d_ustat='$d_ustat'
@@ -21309,6 +21649,7 @@ d_voidsig='$d_voidsig'
 d_voidtty='$d_voidtty'
 d_volatile='$d_volatile'
 d_vprintf='$d_vprintf'
+d_vsnprintf='$d_vsnprintf'
 d_wait4='$d_wait4'
 d_waitpid='$d_waitpid'
 d_wcstombs='$d_wcstombs'
@@ -21563,12 +21904,16 @@ lpr='$lpr'
 ls='$ls'
 lseeksize='$lseeksize'
 lseektype='$lseektype'
+mad='$mad'
 mail='$mail'
 mailx='$mailx'
 make='$make'
 make_set_make='$make_set_make'
 mallocobj='$mallocobj'
 mallocsrc='$mallocsrc'
+madlyh='$madlyh'
+madlyobj='$madlyobj'
+madlysrc='$madlysrc'
 malloctype='$malloctype'
 man1dir='$man1dir'
 man1direxp='$man1direxp'