[x265] [PATCH 2 of 3 RFC] cmake: ugly hacks for adding arbitrary link library

[Steve Borho]

# HG changeset patch
# User Steve Borho <steve at borho.org>
# Date 1433556854 18000
#      Fri Jun 05 21:14:14 2015 -0500
# Node ID cbbb69f3c124cae348883414cb3ab5aaf0fbd995
# Parent  fab8a1a09d1e8b01059f607daec278d4bf8b42fc
cmake: ugly hacks for adding arbitrary link library

(currently necessary for multilib library)

diff -r fab8a1a09d1e -r cbbb69f3c124 source/CMakeLists.txt
--- a/source/CMakeLists.txt	Fri Jun 05 13:16:04 2015 -0500
+++ b/source/CMakeLists.txt	Fri Jun 05 21:14:14 2015 -0500
@@ -270,6 +270,8 @@
 # Build options
 set(LIB_INSTALL_DIR lib CACHE STRING "Install location of libraries")
 set(BIN_INSTALL_DIR bin CACHE STRING "Install location of executables")
+set(EXTRA_LIB "" CACHE STRING "Extra libraries to link against")
+mark_as_advanced(EXTRA_LIB)
 
 if(X64)
     # NOTE: We only officially support 16bit-per-pixel compiles of x265
@@ -391,6 +393,11 @@
 if(NOT MSVC)
     set_target_properties(x265-static PROPERTIES OUTPUT_NAME x265)
 endif()
+if(EXTRA_LIB)
+    # ugly link path hack
+    link_directories(${CMAKE_BINARY_DIR}/../10bit)
+    target_link_libraries(x265-static ${EXTRA_LIB})
+endif()
 install(TARGETS x265-static
     LIBRARY DESTINATION ${LIB_INSTALL_DIR}
     ARCHIVE DESTINATION ${LIB_INSTALL_DIR})