Set IA-64 compiler flag only if it is HP-UX with IA-64

Compiler switch -mlp64 (GCC) or +DD64(HP CC) gives build failure with
platform HP-UX other than IA-64.
This avoids build break on HP-UX with PA-RISC platform.

Suggested from Larkin Nickle (me <at> larbob org) by libressl ML.

1 files changed, 9 insertions, 4 deletions

diff --git a/m4/check-os-options.m4 b/m4/check-os-options.m4
index 644bf71..8080dcb 100644
--- a/m4/check-os-options.m4
+++ b/m4/check-os-options.m4
@@ -68,10 +68,15 @@ char buf[1]; getentropy(buf, 1);
                 ;;
         *hpux*)
                 HOST_OS=hpux;
-                if test "`echo $CC | cut -d ' ' -f 1`" = "gcc" ; then
-                        CFLAGS="$CFLAGS -mlp64"
-                else
-                        CFLAGS="-g -O2 +DD64 +Otype_safety=off $USER_CFLAGS"
+                if test "`echo $host_os | cut -c 1-4`" = "ia64" ; then
+                        if test "`echo $CC | cut -d ' ' -f 1`" = "gcc" ; then
+                                CFLAGS="$CFLAGS -mlp64"
+                        else
+                                CFLAGS="+DD64"
+                        fi
+                fi
+                if ! test "`echo $CC | cut -d ' ' -f 1`" = "gcc" ; then
+                        CFLAGS="-g -O2 +Otype_safety=off $CFLAGS $USER_CFLAGS"
                 fi
                 CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=600 -D__STRICT_ALIGNMENT"
                 ;;