Don't use unique variable for postfix

The more general CMake way to handle library suffixing is to set
CMAKE_<CONFIG>_POSTFIX, so setting the Debug output suffix name should
be more correctly done by the caller or CMake configurer by setting
the desired value in CMAKE_DEBUG_POSTFIX.

Author: mrjoel

CMakeLists.txt

@@ -103,8 +103,6 @@ endif()
 # Adhere to GNU filesystem layout conventions
 include(GNUInstallDirs)
 
-set(DEBUG_LIBNAME_SUFFIX "" CACHE STRING "Optional suffix to append to the library name for a debug build")
-
 set(JSONCPP_USE_SECURE_MEMORY "0" CACHE STRING "-D...=1 to use memory-wiping allocator for STL")
 
 configure_file("${PROJECT_SOURCE_DIR}/version.in"

src/lib_json/CMakeLists.txt

@@ -84,8 +84,7 @@ endif()
 
 add_library(jsoncpp_lib ${PUBLIC_HEADERS} ${jsoncpp_sources})
 set_target_properties(jsoncpp_lib PROPERTIES VERSION ${JSONCPP_VERSION} SOVERSION ${JSONCPP_SOVERSION})
-set_target_properties(jsoncpp_lib PROPERTIES OUTPUT_NAME jsoncpp
-                        DEBUG_OUTPUT_NAME jsoncpp${DEBUG_LIBNAME_SUFFIX})
+set_target_properties(jsoncpp_lib PROPERTIES OUTPUT_NAME jsoncpp)
 set_target_properties(jsoncpp_lib PROPERTIES POSITION_INDEPENDENT_CODE ON)
 
 # Set library's runtime search path on OSX