Omit some linker hacks if not doing unexec

* configure.ac (LDFLAGS, LD_SWITCH_SYSTEM_TEMACS):
Omit some funky linker flags if not supporting unexec.

Use macOS linker hacks only if needed
* configure.ac: On darwin, link with -fno-pie and -headerpad
only if configuring with unexec.

diff --git a/configure.ac b/configure.ac
index 16491a95d565a8365b79fddce45b2b7c222880c0..40be0859aaa4c780745ce880b9ca86b3d974fce0 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -791,7 +791,9 @@ case "${canonical}" in
     opsys=qnxnto
     test -z "$CC" && CC=qcc
     CFLAGS="$CFLAGS -D__NO_EXT_QNX"
-    LDFLAGS="-N2MB $LDFLAGS"
+    if test "$with_unexec" = yes; then
+      LDFLAGS="-N2MB $LDFLAGS"
+    fi
   ;;
 
   ## Intel 386 machines where we don't care about the manufacturer.
@@ -1501,7 +1503,7 @@ esac
 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
 
 LD_SWITCH_SYSTEM=
-case "$opsys" in
+test "$with_unexec" = no || case "$opsys" in
   freebsd|dragonfly)
    ## Let 'ld' find image libs and similar things in /usr/local/lib.
    ## The system compiler, GCC, has apparently been modified to not
@@ -5379,6 +5381,15 @@ case "$opsys" in
   cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
 
   darwin)
+   if test "$HAVE_NS" = "yes"; then
+     libs_nsgui="-framework AppKit"
+     if test "$NS_IMPL_COCOA" = "yes"; then
+        libs_nsgui="$libs_nsgui -framework IOKit -framework Carbon"
+     fi
+   else
+     libs_nsgui=
+   fi
+   LD_SWITCH_SYSTEM_TEMACS=$libs_nsgui
    ## The -headerpad option tells ld (see man page) to leave room at the
    ## end of the header for adding load commands.  Needed for dumping.
    ## 0x1000 is enough for roughly 52 load commands on the x86_64
@@ -5387,15 +5398,9 @@ case "$opsys" in
    ## about 14 to about 34. Setting it high gets us plenty of slop and
    ## only costs about 1.5K of wasted binary space.
    headerpad_extra=1000
-   if test "$HAVE_NS" = "yes"; then
-     libs_nsgui="-framework AppKit"
-     if test "$NS_IMPL_COCOA" = "yes"; then
-        libs_nsgui="$libs_nsgui -framework IOKit -framework Carbon"
-     fi
-   else
-     libs_nsgui=
+   if test "$with_unexec" = yes; then
+     LD_SWITCH_SYSTEM_TEMACS="-fno-pie $LD_SWITCH_SYSTEM_TEMACS -Xlinker -headerpad -Xlinker $headerpad_extra"
    fi
-   LD_SWITCH_SYSTEM_TEMACS="-fno-pie $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
 
    ## This is here because src/Makefile.in did some extra fiddling around
    ## with LD_SWITCH_SYSTEM.  It seems cleaner to put this in