1 files changed, 65 insertions, 0 deletions
diff --git a/pkg-config.patch b/pkg-config.patch
new file mode 100644
index 000000000000..100be64421d9
--- /dev/null
+++ b/pkg-config.patch
@@ -0,0 +1,65 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index e30b9df..a38f1f5 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -90,39 +90,9 @@ execute_process (COMMAND ${LLVM_CONFIG} --cppflags
+                  OUTPUT_VARIABLE LLVM_CXX_FLAGS
+                  OUTPUT_STRIP_TRAILING_WHITESPACE)
+ 
+-# Confirm that ffi.h and libffi are present. (Added two common ffi.h
+-# path, would be nice if this were a bit more robust.)
+-
+-find_path (FFI_INCLUDE_PATH ffi.h PATHS /usr/include/i386-linux-gnu /usr/include/x86_64-linux-gnu ${FFI_INCLUDE_DIR})
+-if (FFI_INCLUDE_PATH)
+-    set (FFI_HEADER ffi.h)
+-else ()
+-    find_path (FFI_INCLUDE_PATH ffi/ffi.h PATHS ${FFI_INCLUDE_DIR})
+-    if (FFI_INCLUDE_PATH)
+-        set (FFI_HEADER ffi/ffi.h)
+-    endif ()
+-endif ()
+-
+-if (NOT FFI_HEADER)
+-    message (FATAL_ERROR "libffi includes (ffi.h) are not found. Re-run cmake with -DFFI_INCLUDE_DIR={path-to-include-dir}")
+-endif ()
+-
+-find_library(FFI_LIBRARY_PATH ffi PATHS ${FFI_LIBRARY_DIR})
+-if (NOT FFI_LIBRARY_PATH)
+-    message (FATAL_ERROR "libffi is not found. Re-run cmake with -DFFI_LIBRARY_DIR.")
+-endif ()
+-
+-if (NOT FFI_LIBRARY_DIR)
+-    set (FFI_LIBRARY_DIR "")
+-else ()
+-    set (FFI_LIBRARY_DIR "-L${FFI_LIBRARY_DIR}")
+-endif ()
+-
+-if (NOT FFI_INCLUDE_DIR)
+-    set (FFI_INCLUDE_DIR "")
+-else ()
+-    set (FFI_INCLUDE_DIR "-I${FFI_INCLUDE_DIR}")
+-endif ()
++# Confirm that ffi.h and libffi are present.
++find_package(PkgConfig REQUIRED)
++pkg_search_module(FFI REQUIRED libffi)
+ 
+ # Populate the configuration header.
+ 
+@@ -155,7 +125,7 @@ if (IS_DEBUG)
+ endif ()
+ 
+ # Set compile/link flags.
+-set (DALEC_LIBDIR_FLAGS_ "$ENV{LDFLAGS} ${FFI_LIBRARY_DIR}")
++set (DALEC_LIBDIR_FLAGS_ "$ENV{LDFLAGS} ${FFI_LDFLAGS}")
+ set (DALEC_LIB_FLAGS_    "")
+ 
+ if (${D_LLVM_VERSION_MINOR} GREATER 4)
+@@ -176,7 +146,7 @@ else ()
+ endif ()
+ 
+ string(REGEX REPLACE "^ +" "" DALEC_LINK_FLAGS ${DALEC_LINK_FLAGS_})
+-set (CMAKE_CXX_FLAGS         "$ENV{CPPFLAGS} ${FFI_INCLUDE_DIR} -Wall -ansi")
++set (CMAKE_CXX_FLAGS         "$ENV{CPPFLAGS} ${FFI_CFLAGS} -Wall -ansi")
+ set (CMAKE_CXX_FLAGS_DEBUG   "-g -ggdb -O0 -fno-inline -Wextra -Wno-unused-parameter ${CXX_FLAGS_EXTRA}")
+ set (CMAKE_CXX_FLAGS_RELEASE "-O3 -fomit-frame-pointer ${CXX_FLAGS_EXTRA}")
+