Re: the Right place to change a target default for a common compiler flag?

[Dominique Dhumieres]

Iain,

I am currently bootstrapping on i686-apple-darwin9 with the current patch:

diff -uN /opt/gcc/_gcc_clean/config/mh-intel-darwin 
/opt/gcc/gcc-4.5-work/config/mh-intel-darwin
--- /opt/gcc/_gcc_clean/config/mh-intel-darwin  1970-01-01 01:00:00.000000000 
+0100
+++ /opt/gcc/gcc-4.5-work/config/mh-intel-darwin        2009-09-23 
13:47:12.000000000 +0200
@@ -0,0 +1,3 @@
+# Set strict-dwarf for Darwin
+
+BOOT_CFLAGS += -gstrict-dwarf
diff -uN /opt/gcc/_gcc_clean/config/mh-ppc-darwin 
/opt/gcc/gcc-4.5-work/config/mh-ppc-darwin
--- /opt/gcc/_gcc_clean/config/mh-ppc-darwin    2008-02-25 11:00:23.000000000 
+0100
+++ /opt/gcc/gcc-4.5-work/config/mh-ppc-darwin  2009-09-23 12:07:12.000000000 
+0200
@@ -2,4 +2,4 @@
 # position-independent-code -- the usual default on Darwin. This fix speeds
 # compiles by 3-5%.
 
-BOOT_CFLAGS += -mdynamic-no-pic
+BOOT_CFLAGS += -mdynamic-no-pic -gstrict-dwarf
--- /opt/gcc/_gcc_clean/configure       2009-09-22 20:04:27.000000000 +0200
+++ /opt/gcc/gcc-4.5-work/configure     2009-09-23 13:50:29.000000000 +0200
@@ -3655,6 +3655,12 @@
   powerpc-*-darwin*)
     host_makefile_frag="config/mh-ppc-darwin"
     ;;
+  i[3456789]86-*-darwin*)
+    host_makefile_frag="config/mh-intel-darwin"
+    ;;
+  x86_64-*-darwin[912]*)
+    host_makefile_frag="config/mh-intel-darwin"
+    ;;
   powerpc-*-aix*)
     host_makefile_frag="config/mh-ppc-aix"
     ;;

I am currently at stage 3 and I see -gstrict-dwarf in the log file.

I don't know if it is the Right place, but it seems to work so far.

Cheers,

Dominique