Merge pull request libgit2#4339 from pks-t/pks/static-linking

Static linking for bundled deps

Author: carlosmn

.travis.yml

@@ -30,10 +30,6 @@ matrix:
    - os: osx
      compiler: gcc
  include:
-   - compiler: gcc
-     env: PRECISE=1
-     os: linux
-     dist: precise
    - compiler: gcc
      env: COVERITY=1
      os: linux

CMakeLists.txt

@@ -12,7 +12,7 @@
 # > cmake --build . --target install
 
 PROJECT(libgit2 C)
-CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8.11)
 CMAKE_POLICY(SET CMP0015 NEW)
 IF (CMAKE_VERSION VERSION_GREATER 3.0)
 	CMAKE_POLICY(SET CMP0051 NEW)

deps/http-parser/CMakeLists.txt

@@ -1,3 +1,3 @@
 FILE(GLOB SRC_HTTP "*.c" "*.h")
 
-ADD_LIBRARY(http-parser STATIC ${SRC_HTTP})
+ADD_LIBRARY(http-parser OBJECT ${SRC_HTTP})

deps/regex/CMakeLists.txt

@@ -1,2 +1,2 @@
 INCLUDE_DIRECTORIES(".")
-ADD_LIBRARY(regex STATIC "regex.c" "regex.h")
+ADD_LIBRARY(regex OBJECT "regex.c" "regex.h")

deps/zlib/CMakeLists.txt

@@ -1,4 +1,4 @@
 ADD_DEFINITIONS(-DNO_VIZ -DSTDC -DNO_GZIP)
 FILE(GLOB SRC_ZLIB "*.c" "*.h")
 INCLUDE_DIRECTORIES(".")
-ADD_LIBRARY(zlib STATIC ${SRC_ZLIB})
+ADD_LIBRARY(zlib OBJECT ${SRC_ZLIB})

src/CMakeLists.txt

@@ -2,6 +2,8 @@ IF(DEBUG_POOL)
 	SET(GIT_DEBUG_POOL 1)
 ENDIF()
 
+SET(LIBGIT2_OBJECTS "")
+
 # This variable will contain the libraries we need to put into
 # libgit2.pc's Requires.private. That is, what we're linking to or
 # what someone who's statically linking us needs to link to.
@@ -181,7 +183,7 @@ ENDIF()
 IF(WIN32 OR AMIGA OR CMAKE_SYSTEM_NAME MATCHES "(Solaris|SunOS)")
 	ADD_SUBDIRECTORY("${CMAKE_SOURCE_DIR}/deps/regex" "${CMAKE_BINARY_DIR}/deps/regex")
 	LIST(APPEND LIBGIT2_INCLUDES "${CMAKE_SOURCE_DIR}/deps/regex")
-	LIST(APPEND LIBGIT2_LIBS regex)
+	LIST(APPEND LIBGIT2_OBJECTS $<TARGET_OBJECTS:regex>)
 ENDIF()
 
 # Optional external dependency: http-parser
@@ -194,7 +196,7 @@ ELSE()
 	MESSAGE(STATUS "http-parser version 2 was not found or disabled; using bundled 3rd-party sources.")
 	ADD_SUBDIRECTORY("${CMAKE_SOURCE_DIR}/deps/http-parser" "${CMAKE_BINARY_DIR}/deps/http-parser")
 	LIST(APPEND LIBGIT2_INCLUDES "${CMAKE_SOURCE_DIR}/deps/http-parser")
-	LIST(APPEND LIBGIT2_LIBS http-parser)
+	LIST(APPEND LIBGIT2_OBJECTS "$<TARGET_OBJECTS:http-parser>")
 ENDIF()
 
 # Optional external dependency: zlib
@@ -212,7 +214,7 @@ ELSE()
 	MESSAGE(STATUS "zlib was not found; using bundled 3rd-party sources." )
 	ADD_SUBDIRECTORY("${CMAKE_SOURCE_DIR}/deps/zlib" "${CMAKE_BINARY_DIR}/deps/zlib")
 	LIST(APPEND LIBGIT2_INCLUDES "${CMAKE_SOURCE_DIR}/deps/zlib")
-	LIST(APPEND LIBGIT2_LIBS zlib)
+	LIST(APPEND LIBGIT2_OBJECTS $<TARGET_OBJECTS:zlib>)
 ENDIF()
 
 # Optional external dependency: libssh2
@@ -330,32 +332,28 @@ ENDIF()
 
 CONFIGURE_FILE(features.h.in git2/sys/features.h)
 
-SET(GIT2INTERNAL_OBJECTS ${SRC_H} ${SRC_GIT2} ${SRC_OS} ${SRC_SSH} ${SRC_SHA1})
+SET(LIBGIT2_SOURCES ${SRC_H} ${SRC_GIT2} ${SRC_OS} ${SRC_SSH} ${SRC_SHA1})
 
-IF (CMAKE_VERSION VERSION_GREATER 2.8.7)
-	ADD_LIBRARY(git2internal OBJECT ${GIT2INTERNAL_OBJECTS})
-	IDE_SPLIT_SOURCES(git2internal)
-	SET(GIT2INTERNAL_OBJECTS $<TARGET_OBJECTS:git2internal>)
+ADD_LIBRARY(git2internal OBJECT ${LIBGIT2_SOURCES})
+IDE_SPLIT_SOURCES(git2internal)
+LIST(APPEND LIBGIT2_OBJECTS $<TARGET_OBJECTS:git2internal>)
 
-	IF (${CMAKE_VERSION} VERSION_LESS 2.8.12)
-		INCLUDE_DIRECTORIES(${LIBGIT2_INCLUDES})
-	ELSE()
-		TARGET_INCLUDE_DIRECTORIES(git2internal
-		    PRIVATE ${LIBGIT2_INCLUDES}
-		    PUBLIC ${CMAKE_SOURCE_DIR}/include)
-	ENDIF()
-ELSE()
+IF (${CMAKE_VERSION} VERSION_LESS 2.8.12)
 	INCLUDE_DIRECTORIES(${LIBGIT2_INCLUDES})
+ELSE()
+	TARGET_INCLUDE_DIRECTORIES(git2internal
+	    PRIVATE ${LIBGIT2_INCLUDES}
+	    PUBLIC ${CMAKE_SOURCE_DIR}/include)
 ENDIF()
 
-SET(GIT2INTERNAL_OBJECTS ${GIT2INTERNAL_OBJECTS} PARENT_SCOPE)
+SET(LIBGIT2_OBJECTS ${LIBGIT2_OBJECTS} PARENT_SCOPE)
 SET(LIBGIT2_INCLUDES ${LIBGIT2_INCLUDES} PARENT_SCOPE)
 SET(LIBGIT2_LIBS ${LIBGIT2_LIBS} PARENT_SCOPE)
 SET(LIBGIT2_LIBDIRS ${LIBGIT2_LIBDIRS} PARENT_SCOPE)
 
 # Compile and link libgit2
 LINK_DIRECTORIES(${LIBGIT2_LIBDIRS})
-ADD_LIBRARY(git2 ${WIN_RC} ${GIT2INTERNAL_OBJECTS})
+ADD_LIBRARY(git2 ${WIN_RC} ${LIBGIT2_OBJECTS})
 TARGET_LINK_LIBRARIES(git2 ${LIBGIT2_LIBS})
 
 SET_TARGET_PROPERTIES(git2 PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})

tests/CMakeLists.txt

@@ -33,11 +33,13 @@ SET_SOURCE_FILES_PROPERTIES(
 LINK_DIRECTORIES(${LIBGIT2_LIBDIRS})
 INCLUDE_DIRECTORIES(${LIBGIT2_INCLUDES})
 
-ADD_EXECUTABLE(libgit2_clar ${SRC_CLAR} ${SRC_TEST} ${GIT2INTERNAL_OBJECTS})
+ADD_EXECUTABLE(libgit2_clar ${SRC_CLAR} ${SRC_TEST} ${LIBGIT2_OBJECTS})
 
 SET_TARGET_PROPERTIES(libgit2_clar PROPERTIES RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
 
-IF (${CMAKE_VERSION} VERSION_GREATER 2.8.11)
+IF (${CMAKE_VERSION} VERSION_LESS 2.8.12)
+	# Already handled by a global INCLUDE_DIRECTORY()
+ELSE()
 	TARGET_INCLUDE_DIRECTORIES(libgit2_clar PRIVATE ../src PUBLIC ../include)
 ENDIF()