From 3055b6279da2a83c1dd8eceb24b548eccb134300 Mon Sep 17 00:00:00 2001
From: Jarkko Hietaniemi <jhi@iki.fi>
Date: Fri, 29 Mar 2002 02:59:03 +0000
Subject: MPE/iX tweaks from Mark Bixby.

p4raw-id: //depot/perl@15590
---
 mpeix/relink | 38 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 37 insertions(+), 1 deletion(-)

(limited to 'mpeix/relink')

diff --git a/mpeix/relink b/mpeix/relink
index 073b707864..0ba9aebada 100755
--- a/mpeix/relink
+++ b/mpeix/relink
@@ -1,13 +1,49 @@
 #!/bin/sh
 
+# The MPE POSIX libc archive library contains rand(), but this function has
+# been omitted from the libc shared library on the mistaken assumption that
+# the rand() function in the kernel library /SYS/PUB/XL could be used instead.
+# However, rand() in /SYS/PUB/XL is a Fortran function with different semantics
+# from the C version that we expect.
+
+# So in order to get the correct rand() function and to make it available to
+# the dynamically loaded perl extensions, we will build our own mini rand()
+# shared library and add this to the perl NMPRG's XL list.
+
+RAND=/$HPACCOUNT/$HPGROUP/libcrand
+
+echo "Creating $RAND.sl...\n"
+
+TEMP=/tmp/perlmpe.$$
+
+rm -f $TEMP $RAND.a $RAND.sl
+
+/bin/cat - >$TEMP <<EOF
+buildrl $RAND.a
+copyrl from=/lib/libc.a;to=$RAND.a;module=rand
+revealrl rl=$RAND.a;all
+buildxl $RAND.sl;limit=1
+addxl from=$RAND.a;to=$RAND.sl;share
+listxl xl=$RAND.sl
+EOF
+
+callci "xeq LINKEDIT.PUB.SYS <$TEMP"
+
+rm -f $TEMP $RAND.a
+
 # MPE/iX as of 5.5 does not yet properly support linking against dynamic
 # libraries via gcc or ld.  For now, re-run gcc without the external library
 # list, and then run the native linker with the list of dynamic libraries.
 
+echo "Creating the perl executable NMPRG..."
+
 gcc -o perl perlmain.o \
   lib/auto/DynaLoader/DynaLoader.a \
   libperl.a \
   `cat ext.libs` \
   -L/BINDFW/CURRENT/lib -lbind \
   -L/SYSLOG/PUB -lsyslog
-callci 'linkedit "altprog ./perl;xl=/usr/lib/libcurses.sl,/lib/libsvipc.sl,/usr/lib/libsocket.sl,/usr/lib/libstr.sl,/lib/libm.sl,/lib/libc.sl"'
+
+echo "Modifying the perl executable NMPRG XL list...\n"
+
+callci "xeq LINKEDIT.PUB.SYS 'altprog ./perl;xl=/usr/lib/libcurses.sl,/lib/libsvipc.sl,/usr/lib/libsocket.sl,/usr/lib/libstr.sl,/lib/libm.sl,$RAND.sl,/lib/libc.sl'"
-- 
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