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Index: mono-1.2.6/libgc/configure.in
===================================================================
--- mono-1.2.6.orig/libgc/configure.in 2007-12-12 15:02:31.000000000 -0500
+++ mono-1.2.6/libgc/configure.in 2007-12-12 15:05:10.000000000 -0500
@@ -17,6 +17,15 @@
AC_PREREQ(2.53)
AC_INIT(libgc-mono, 6.6, Hans_Boehm@hp.com)
+# the following is a very strange bug. CPPFLAGS does not get set correctly
+# if CPPFLAGS is set in the environment. The top level configure script
+# appends to the CPPFLAGS variable, and then exports it. This change should
+# be picked up by this configure script, but it is not. The original
+# env variable is still used for some reason. If CPPFLAGS is not set in the
+# environment, everything works fine.
+# Someone more experienced with autoconf will have to come up with a better fix.
+CPPFLAGS="$CPPFLAGS -DGC_LINUX_THREADS -D_GNU_SOURCE -D_REENTRANT -DUSE_MMAP -DUSE_MUNMAP -DUSE_COMPILER_TLS"
+echo "CPPFLAGS verify: start of libgc/configure.in, CPPFLAGS = $CPPFLAGS"
AM_INIT_AUTOMAKE(libgc-mono, 6.6, no-define)
AC_CONFIG_SRCDIR(gcj_mlc.c)
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