Preliminary support for cross-compilation.

Setting BUILD=, or HOST=, or TARGET= will pass --build=, ... to the
configure process.

If cross compiling you need to set

ENDIAN - either big or little
SIZEOF_LONG_INT
SIZEOF_INT
SIZEOF_SHORT_INT
SIZEOF_LONG_DOUBLE
SIZEOF_DOUBLE
SIZEOF_SHORT
SIZEOF_POINTER

otherwise you'll get an error.

You may also set

NULL_DEVICE

to tell it the location of the null device.  If you don't set this you'll
just get a warning, and it will default to /dev/null.

This is weakly tested, as I am limited in what I can cross compile for.


Fixed semantics for DEBUG to be as in previous commit, except DEBUG=DEFINES
define CCTK_DEBUG and not DEBUG in the header files.

Partially dealt with PR  340 -- -g -O2 no longer automatically appear as
the compilation flags.

Tom


git-svn-id: http://svn.cactuscode.org/flesh/trunk@1652 17b73243-c579-4c4c-a9d2-2d5706c11dac

1 files changed, 28 insertions, 2 deletions

diff --git a/lib/make/setup_configuration.pl b/lib/make/setup_configuration.pl
index a0ac978d..467bfcde 100755
--- a/lib/make/setup_configuration.pl
+++ b/lib/make/setup_configuration.pl
@@ -93,7 +93,9 @@ chdir "config-data" || die "Internal error - could't enter $configs_dir/$config/
 
 &SetConfigureEnv();
 
-system("$configure");
+$configure_command = &DetermineConfigureCommand($configure, %ENV);
+
+system("$configure_command");
 
 $retcode = $? >> 8;
 
@@ -168,4 +170,28 @@ sub SetConfigureEnv
 
 }
 
-sub ConfigureConfiguration
+sub DetermineConfigureCommand
+{
+  my($configure, %env) = @_;
+  my($configure_command);
+
+  $configure_command = "$configure";
+
+  if($ENV{"BUILD"})
+  {
+    $configure_command .= " --build=". $ENV{"BUILD"};
+  }
+
+  if($ENV{"TARGET"})
+  {
+    $configure_command .= " --target=". $ENV{"TARGET"};
+  }
+     
+  if($ENV{"HOST"})
+  {
+    $configure_command .= " --host=". $ENV{"HOST"};
+  }
+
+  return $configure_command;
+}
+