Add yajl port (#3379)

* Add yajl port

* [yajl] Patch cmake to fix install directories and avoid overwriting compiler flags

ports/yajl/CONTROL

@@ -0,0 +1,3 @@
+Source: yajl
+Version: 2.1.0-1
+Description: Yet Another JSON Library

ports/yajl/cmake.patch

@@ -0,0 +1,36 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 4c0a9be..cbec22f 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -28,7 +28,7 @@ ENDIF (NOT CMAKE_BUILD_TYPE)
+ 
+ SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
+ 
+-IF (WIN32)
++IF (WIN32 AND FALSE)
+   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")
+   ADD_DEFINITIONS(-DWIN32)
+   SET(linkFlags "/PDB:NONE /INCREMENTAL:NO /OPT:NOREF /OPT:NOICF")
+@@ -46,7 +46,8 @@ IF (WIN32)
+   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /wd4996 /wd4255 /wd4130 /wd4100 /wd4711")
+   SET(CMAKE_C_FLAGS_DEBUG "/D DEBUG /Od /Z7")
+   SET(CMAKE_C_FLAGS_RELEASE "/D NDEBUG /O2")
+-ELSE (WIN32)
++endif()
++if (NOT WIN32)
+   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall")
+   IF(CMAKE_COMPILER_IS_GNUCC)
+     INCLUDE(CheckCCompilerFlag)
+diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
+index 99cf9e9..454482a 100644
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -78,7 +78,7 @@ INCLUDE_DIRECTORIES(${incDir}/..)
+ # at build time you may specify the cmake variable LIB_SUFFIX to handle
+ # 64-bit systems which use 'lib64'
+ INSTALL(TARGETS yajl
+-        RUNTIME DESTINATION lib${LIB_SUFFIX}
++        RUNTIME DESTINATION bin
+         LIBRARY DESTINATION lib${LIB_SUFFIX}
+         ARCHIVE DESTINATION lib${LIB_SUFFIX})
+ INSTALL(TARGETS yajl_s ARCHIVE DESTINATION lib${LIB_SUFFIX})

ports/yajl/portfile.cmake

@@ -0,0 +1,34 @@
+include(vcpkg_common_functions)
+
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO lloyd/yajl
+    REF 2.1.0
+    SHA512 9e786d080803df80ec03a9c2f447501e6e8e433a6baf636824bc1d50ecf4f5f80d7dfb1d47958aeb0a30fe459bd0ef033d41bc6a79e1dc6e6b5eade930b19b02
+    HEAD_REF master
+    PATCHES ${CMAKE_CURRENT_LIST_DIR}/cmake.patch
+)
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+)
+
+vcpkg_install_cmake()
+
+file(INSTALL ${SOURCE_PATH}/COPYING DESTINATION ${CURRENT_PACKAGES_DIR}/share/yajl RENAME copyright)
+
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug/include ${CURRENT_PACKAGES_DIR}/debug/share ${CURRENT_PACKAGES_DIR}/share/pkgconfig)
+
+if(VCPKG_LIBRARY_LINKAGE STREQUAL "static")
+    file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/bin ${CURRENT_PACKAGES_DIR}/debug/bin)
+    file(GLOB SHAREDOBJECTS ${CURRENT_PACKAGES_DIR}/lib/libyajl.so* ${CURRENT_PACKAGES_DIR}/debug/lib/libyajl.so*)
+    file(REMOVE_RECURSE ${SHAREDOBJECTS} ${CURRENT_PACKAGES_DIR}/lib/yajl.lib ${CURRENT_PACKAGES_DIR}/debug/lib/yajl.lib)
+else()
+    file(GLOB EXES ${CURRENT_PACKAGES_DIR}/bin/*.exe ${CURRENT_PACKAGES_DIR}/debug/bin/*.exe)
+    file(REMOVE_RECURSE
+        ${EXES}
+        ${CURRENT_PACKAGES_DIR}/lib/yajl_s.lib ${CURRENT_PACKAGES_DIR}/debug/lib/yajl_s.lib
+        ${CURRENT_PACKAGES_DIR}/lib/libyajl_s.a ${CURRENT_PACKAGES_DIR}/debug/lib/libyajl_s.a
+    )
+endif()