X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=hints%2Firix_6.sh;h=ce301df2ff55ae3ae94a6b0566fc39e499901087;hb=c4eb81271d38690def0c149c253ee8dc4015bfca;hp=09c5ee1d59ceddb18e5b0b803e023d35546be2d3;hpb=ea6ddde26e93ac4e470613e4a73999c44dba71c7;p=p5sagit%2Fp5-mst-13.2.git

diff --git a/hints/irix_6.sh b/hints/irix_6.sh
index 09c5ee1..ce301df 100644
--- a/hints/irix_6.sh
+++ b/hints/irix_6.sh
@@ -32,6 +32,14 @@
 # Don't bother with -n32 unless you have the 7.1 or later compilers.
 #     But there's no quick and light-weight way to check in 6.2.
 
+# NOTE: some IRIX cc versions, e.g. 7.3.1.1m (try cc -version) have
+# been known to have issues (coredumps) when compiling perl.c.
+# If you've used -OPT:fast_io=ON and this happens, try removing it.
+# If that fails, or you didn't use that, then try adjusting other
+# optimization options (-LNO, -INLINE, -O3 to -O2, etcetera).
+# The compiler bug has been reported to SGI.
+# -- Allen Smith <easmith@beatrice.rutgers.edu>
+
 # Let's assume we want to use 'cc -n32' by default, unless the
 # necessary libm is missing (which has happened at least twice)
 case "$cc" in
@@ -40,6 +48,7 @@ case "$cc" in
     *) test -f /usr/lib32/libm.so && cc='cc -n32' ;;
     esac    	
 esac
+test -z "$cc" && cc=cc
 
 case "$use64bitint" in
 $define|true|[yY]*)
@@ -76,9 +85,19 @@ esac
 case "$cc" in
 *"cc -n32"*)
 
-	libscheck='case "`/usr/bin/file $xxx`" in
-*N32*) ;;
-*) xxx=/no/n32$xxx ;;
+	# If a library is requested to link against, make sure the
+	# objects in the library are of the same ABI we are compiling
+	# against. Albert Chin-A-Young <china@thewrittenword.com>
+	libscheck='case "$xxx" in
+*.a) /bin/ar p $xxx `/bin/ar t $xxx | /usr/bsd/head -1` >$$.o;
+  case "`/usr/bin/file $$.o`" in
+  *N32*) rm -f $$.o ;;
+  *) rm -f $$.o; xxx=/no/n32$xxx ;;
+  esac ;;
+*) case "`/usr/bin/file $xxx`" in
+  *N32*) ;;
+  *) xxx=/no/n32$xxx ;;
+  esac ;;
 esac'
 
 	# NOTE: -L/usr/lib32 -L/lib32 are automatically selected by the linker
@@ -141,8 +160,17 @@ case "$cc" in
 	ld=$cc
 
 	# perl's malloc can return improperly aligned buffer
-	# usemymalloc='undef'
-malloc_cflags='ccflags="-DSTRICT_ALIGNMENT $ccflags"'
+	# which (under 5.6.0RC1) leads into really bizarre bus errors
+	# and freak test failures (lib/safe1 #18, for example),
+	# even more so with -Duse64bitall: for example lib/io_linenumtb.
+	# fails under the harness but succeeds when run separately,
+	# under make test pragma/warnings #98 fails, and lib/io_dir
+	# apparently coredumps (the last two don't happen under
+    	# the harness.  Helmut Jarausch is seeing bus errors from
+        # miniperl, as was Scott Henry with snapshots from just before
+	# the RC1. --jhi
+	usemymalloc='undef'
+#malloc_cflags='ccflags="-DSTRICT_ALIGNMENT $ccflags"'
 
 	nm_opt='-p'
 	nm_so_opt='-p'
@@ -206,8 +234,10 @@ esac
 # Don't groan about unused libraries.
 ldflags="$ldflags -Wl,-woff,84"
 
+# workaround for an optimizer bug
 case "`$cc -version 2>&1`" in
-*7.2.*)	op_cflags='optimize=-O1' ;; # workaround for an optimizer bug
+*7.2.*)   op_cflags='optimize=-O1'; opmini_cflags='optimize=-O1' ;;
+*7.3.1.*) op_cflags='optimize=-O2'; opmini_cflags='optimize=-O2' ;;
 esac
 
 # We don't want these libraries.