DRY: Add function that adds os-specific libraries to our targets

CMakeLists.txt

@@ -41,6 +41,17 @@ SET(BIN_INSTALL_DIR bin CACHE PATH "Where to install binaries to.")
 SET(LIB_INSTALL_DIR lib CACHE PATH "Where to install libraries to.")
 SET(INCLUDE_INSTALL_DIR include CACHE PATH "Where to install headers to.")
 
+FUNCTION(TARGET_OS_LIBRARIES target)
+	IF(WIN32)
+		TARGET_LINK_LIBRARIES(${target} ws2_32)
+	ELSEIF(CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
+		TARGET_LINK_LIBRARIES(${target} socket nsl)
+	ENDIF ()
+	IF(THREADSAFE)
+		TARGET_LINK_LIBRARIES(${target} ${CMAKE_THREAD_LIBS_INIT})
+	ENDIF()
+ENDFUNCTION()
+
 FILE(STRINGS "include/git2/version.h" GIT2_HEADER REGEX "^#define LIBGIT2_VERSION \"[^\"]*\"$")
 
 STRING(REGEX REPLACE "^.*LIBGIT2_VERSION \"([0-9]+).*$" "\\1" LIBGIT2_VERSION_MAJOR "${GIT2_HEADER}")
@@ -172,14 +183,9 @@ FILE(GLOB SRC_GIT2 src/*.c src/transports/*.c src/xdiff/*.c)
 
 # Compile and link libgit2
 ADD_LIBRARY(git2 ${SRC_GIT2} ${SRC_OS} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SHA1} ${WIN_RC})
+TARGET_LINK_LIBRARIES(git2 ${SSL_LIBRARIES})
+TARGET_OS_LIBRARIES(git2)
 
-IF (WIN32)
-	TARGET_LINK_LIBRARIES(git2 ws2_32)
-ELSEIF (CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
-	TARGET_LINK_LIBRARIES(git2 socket nsl)
-ENDIF ()
-
-TARGET_LINK_LIBRARIES(git2 ${CMAKE_THREAD_LIBS_INIT} ${SSL_LIBRARIES})
 SET_TARGET_PROPERTIES(git2 PROPERTIES VERSION ${LIBGIT2_VERSION_STRING})
 SET_TARGET_PROPERTIES(git2 PROPERTIES SOVERSION ${LIBGIT2_VERSION_MAJOR})
 CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/libgit2.pc.in ${CMAKE_CURRENT_BINARY_DIR}/libgit2.pc @ONLY)
@@ -221,19 +227,14 @@ IF (BUILD_CLAR)
 		WORKING_DIRECTORY ${CLAR_PATH}
 	)
 	ADD_EXECUTABLE(libgit2_clar ${SRC_GIT2} ${SRC_OS} ${CLAR_PATH}/clar_main.c ${SRC_TEST} ${SRC_ZLIB} ${SRC_HTTP} ${SRC_REGEX} ${SRC_SHA1})
-	TARGET_LINK_LIBRARIES(libgit2_clar ${CMAKE_THREAD_LIBS_INIT} ${SSL_LIBRARIES})
+	TARGET_LINK_LIBRARIES(libgit2_clar ${SSL_LIBRARIES})
+	TARGET_OS_LIBRARIES(libgit2_clar)
 
         IF (MSVC_IDE)
            # Precompiled headers
            SET_TARGET_PROPERTIES(libgit2_clar PROPERTIES COMPILE_FLAGS "/Yuprecompiled.h /FIprecompiled.h")
         ENDIF ()
 
-	IF (WIN32)
-		TARGET_LINK_LIBRARIES(libgit2_clar ws2_32)
-	ELSEIF (CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
-		TARGET_LINK_LIBRARIES(libgit2_clar socket nsl)
-	ENDIF ()
-
 	ENABLE_TESTING()
 	ADD_TEST(libgit2_clar libgit2_clar -iall)
 ENDIF ()