Fix libffi.so: File in wrong format

For some reason CMake started finding libffi.so in the wrong directory:
/lib instead of /lib32. The solution here is to prepend /lib32 to the
(usually empty) list in CMAKE_LIBRARY_PATH. There might be a better way
to do this and it would be nice to understand what caused the sudden
change in the first place, but this should get the job done for now.

1 files changed, 7 insertions, 0 deletions

diff --git a/PKGBUILD b/PKGBUILD
index aa1745af7aa9..c90ed55b293b 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -82,6 +82,13 @@ prepare() {
     svn export --force "${srcdir}/compiler-rt" projects/compiler-rt
 
     mkdir -p "${srcdir}/build"
+
+    # Somehow CMake finds the 64-bit library in /lib first,
+    # so let's preseed CMAKE_LIBRARY_PATH with /lib32.
+    sed -i \
+        '/^[[:blank:]]*find_library(FFI_LIBRARY_PATH/i\
+  list(INSERT CMAKE_LIBRARY_PATH 0 /usr/lib32)' \
+        "${srcdir}/llvm/cmake/config-ix.cmake"
 }
 
 build() {