tools/cmake: Build without some included libs

[openwrt/staging/nbd.git] / tools / cmake / patches / 140-zlib.patch

diff --git a/tools/cmake/patches/140-zlib.patch b/tools/cmake/patches/140-zlib.patch
new file mode 100644 (file)
index 0000000..f79801c
--- /dev/null
+++ b/tools/cmake/patches/140-zlib.patch
@@ -0,0 +1,20 @@
+--- a/Modules/FindZLIB.cmake
++++ b/Modules/FindZLIB.cmake
+@@ -85,10 +85,13 @@ else()
+   set(ZLIB_NAMES_DEBUG zd zlibd zdlld zlibd1 zlib1d zlibstaticd zlibwapid zlibvcd zlibstatd)
+ endif()
+ 
+-# Try each search configuration.
+-foreach(search ${_ZLIB_SEARCHES})
+-  find_path(ZLIB_INCLUDE_DIR NAMES zlib.h ${${search}} PATH_SUFFIXES include)
+-endforeach()
++if(UNIX)
++  find_package(PkgConfig QUIET)
++  pkg_search_module(PC_zlib zlib)
++endif()
++
++find_path(ZLIB_INCLUDE_DIR zlib.h HINTS ${PC_zlib_INCLUDEDIR} ${PC_zlib_INCLUDE_DIRS})
++find_library(ZLIB_LIBRARY NAMES z HINTS ${PC_zlib_LIBDIR} ${PC_zlib_LIBRARY_DIRS})
+ 
+ # Allow ZLIB_LIBRARY to be set manually, as the location of the zlib library
+ if(NOT ZLIB_LIBRARY)