[project @ 2005-04-07 05:27:16 by wolfgang]

Set the keepCAFs flag (required for GHCi with dynamic libraries) from an
__attribute__((constructor)) function linked to stage 2 ghc if GhcBuildDylibs
is set in mk/build.mk.

The previous hack (setting it from addDLL) didn't work, because a few CAFs
from libHSbase_dyn were evaluated before the Linker was first invoked by
GHCi.

MERGE TO STABLE

1 files changed, 15 insertions, 0 deletions

diff --git a/ghc/compiler/ghci/keepCAFsForGHCi.c b/ghc/compiler/ghci/keepCAFsForGHCi.c
new file mode 100644
index 0000000000..0aabbedea0
--- /dev/null
+++ b/ghc/compiler/ghci/keepCAFsForGHCi.c
@@ -0,0 +1,15 @@
+#include "Rts.h"
+#include "Storage.h"
+
+// This file is only included when GhcBuildDylibs is set in mk/build.mk.
+// It contains an __attribute__((constructor)) function (run prior to main())
+// which sets the keepCAFs flag in the RTS, before any Haskell code is run.
+// This is required so that GHCi can use dynamic libraries instead of HSxyz.o
+// files.
+
+static void keepCAFsForGHCi() __attribute__((constructor));
+
+static void keepCAFsForGHCi()
+{
+    keepCAFs = 1;
+}