Explicitly setting the version of json-c required

 to 0.12.1. This is needed because the development

 version breaks the existing API of json_object_array_length()

 by moving the return from int to size_t.

This would fix #1355

1 files changed, 14 insertions, 2 deletions

diff --git a/CMake/FindJsonC.cmake b/CMake/FindJsonC.cmake
index 2ca0df39..bbf6930c 100644
--- a/CMake/FindJsonC.cmake
+++ b/CMake/FindJsonC.cmake
@@ -8,10 +8,22 @@
 #
 
 find_package(PkgConfig)
-pkg_check_modules(PC_JSONC QUIET JSONC)
+
+if (JsonC_FIND_REQUIRED)
+        set(_pkgconfig_REQUIRED "REQUIRED")
+else()
+        set(_pkgconfig_REQUIRED "")
+endif()
+
+if(JsonC_FIND_VERSION)
+    pkg_check_modules(PC_JSONC ${_pkgconfig_REQUIRED} json-c=${JsonC_FIND_VERSION})
+else()
+    pkg_check_modules(PC_JSONC ${_pkgconfig_REQUIRED} json-c)
+endif()
+
 find_path(JSONC_INCLUDE_DIRS NAMES json-c/json.h HINTS ${PC_JSONC_INCLUDE_DIRS})
 find_library(JSONC_LIBRARIES NAMES json-c HINTS ${PC_JSONC_LIBRARY_DIRS})
-
 include(FindPackageHandleStandardArgs)
+
 find_package_handle_standard_args(JSONC DEFAULT_MSG JSONC_LIBRARIES JSONC_INCLUDE_DIRS)
 mark_as_advanced(JSONC_LIBRARIES JSONC_INCLUDE_DIRS)