2010-11-02 Benjamin Kosnik <bkoz@redhat.com>

[pf3gnuchains/gcc-fork.git] / boehm-gc / configure.host

diff --git a/boehm-gc/configure.host b/boehm-gc/configure.host
index 323668d..97f4dac 100644 (file)
--- a/boehm-gc/configure.host
+++ b/boehm-gc/configure.host
@@ -1,6 +1,7 @@
 # configure.host
 
-# This shell script handles all host based configuration for boehm_gc.
+# This shell script handles all host based configuration for the garbage
+# collector.
 # It sets various shell variables based on the the host and the
 # configuration options.  You can modify this shell script without
 # needing to rerun autoconf.
@@ -13,18 +14,44 @@
 #   host               The configuration host
 #   host_cpu           The configuration host CPU
 #   target_optspace    --enable-target-optspace ("yes", "no", "")
+#   GCC                 should be "yes" if using gcc
 
 # It sets the following shell variables:
-#   boehm_gc_cflags    Special CFLAGS to use when building
+#   gc_cflags  Special CFLAGS to use when building
+#   gc_use_mmap  Set to "yes" on platforms where mmap should be used instead
+#               of sbrk. This will define USE_MMAP.
 
-boehm_gc_cflags=-fexceptions
+gc_cflags=""
+gc_use_mmap=
+
+# We should set -fexceptions if we are using gcc and might be used
+# inside something like gcj.  This is the zeroth approximation:
+if test :"$GCC": = :yes: ; then
+    gc_cflags="${gc_cflags} -fexceptions"
+else
+    case "$host" in 
+        hppa*-*-hpux* )
+       if test :$GCC: != :"yes": ; then
+            gc_cflags="${gc_flags} +ESdbgasm"
+       fi
+        # :TODO: actaully we should check using Autoconf if
+        #     the compiler supports this option.
+        ;;
+    esac
+fi
+
+case "${host}" in
+  *-linux*)
+    gc_use_mmap=yes
+    ;;
+esac
 
 case "${target_optspace}:${host}" in
   yes:*)
-    boehm_gc_cflags="${boehm_gc_cflags} -Os"
+    gc_cflags="${gc_cflags} -Os"
     ;;
   :m32r-* | :d10v-* | :d30v-*)
-    boehm_gc_cflags="${boehm_gc_cflags} -Os"
+    gc_cflags="${gc_cflags} -Os"
     ;;
   no:* | :*)
     # Nothing.
@@ -36,7 +63,7 @@ esac
 
 case "${host}" in
   mips-tx39-*|mipstx39-unknown-*)
-       boehm_gc_cflags="${boehm_gc_cflags} -G 0"
+       gc_cflags="${gc_cflags} -G 0"
        ;;
   *)
        ;;