Feature/mingw cross compile (#51)

Gabriele Contini

2019-09-19 6f5db32d147166ab1617c66844e3297eededc704

 CMakeLists.txt

@@ -1,5 +1,3 @@
#TODO guess address_model 64 in boost
#fix shared libraries activation

cmake_minimum_required(VERSION 2.8.11 FATAL_ERROR)

@@ -15,7 +13,7 @@
SET(CMAKE_DISABLE_IN_SOURCE_BUILD ON)
SET(CMAKE_VERBOSE_MAKEFILE ON CACHE BOOL "CMake verbose")

project (license++ C CXX)
project (license++ C CXX )
SET(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/lib)
SET(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/modules/")

@@ -24,7 +22,7 @@
   string(TOLOWER ${CMAKE_BUILD_TYPE} _CMAKE_BUILD_TYPE)
   EVAL_CONDITION(RELEASE_BUILD ${_CMAKE_BUILD_TYPE} STREQUAL "release")
else(CMAKE_BUILD_TYPE)
   set(RELEASE_BUILD 0)
   SET(RELEASE_BUILD 0)
endif(CMAKE_BUILD_TYPE)

if(MSVC)
@@ -45,32 +43,19 @@
   #SET(CMAKE_FIND_LIBRARY_SUFFIXES .lib ) #${CMAKE_FIND_LIBRARY_SUFFIXES}
   add_definitions("/D _CRT_SECURE_NO_WARNINGS")
else(MSVC)
   #GCC or Mingw
    SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pipe -fmessage-length=0 -std=c++11 -Wuninitialized -fPIC") #-Wall
    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pipe -fmessage-length=0 -Wall -Wuninitialized -fPIC") 
    if(RELEASE_BUILD)
        SET(CMAKE_FIND_LIBRARY_SUFFIXES .a) #.so for dynamic libraries
    else()
        SET(CMAKE_FIND_LIBRARY_SUFFIXES .a .so) 
    endif()
    set (CMAKE_EXE_LINKER_FLAGS  "-pthread")
    SET(CMAKE_EXE_LINKER_FLAGS  "-pthread -static-libstdc++")
    SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "-Wl,--strip-all -static-libstdc++") #-static 
    #you need to "force" the change in cmake_install_prefix after the project keyword
   IF(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
      SET(CMAKE_INSTALL_PREFIX "/usr/local" CACHE PATH "Install path prefix" FORCE)
   ENDIF(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
      #find a static version of openssl crypto library
   find_package(OpenSSL REQUIRED)
   include_directories(${OPENSSL_INCLUDE_DIR})
    if(MINGW)
        list(APPEND EXTERNAL_LIBS "-lcrypto -liphlpapi")
    else(MINGW)
        list(APPEND EXTERNAL_LIBS ${OPENSSL_CRYPTO_LIBRARY})
        list(APPEND EXTERNAL_LIBS "-lcrypt32 -lws2_32 -liphlpapi")
        SET(CMAKE_EXE_LINKER_FLAGS "-static")
    endif(MINGW)
   MESSAGE(STATUS "Found openssl version ${OPENSSL_VERSION} ")
	
   #Zlib required when openssl version < 1.0.1f
   find_package(ZLIB REQUIRED)
   list(APPEND EXTERNAL_LIBS ${ZLIB_LIBRARIES})
   
   if(USE_DBUS_IDENTIFIER)
       FIND_PACKAGE(Dbus REQUIRED)
@@ -79,14 +64,28 @@
       include_directories(${DBUS_ARCH_INCLUDE_DIR})
       list(APPEND EXTERNAL_LIBS ${DBUS_LIBRARIES})
   endif(USE_DBUS_IDENTIFIER)    
   if(NOT MINGW)
       list(APPEND EXTERNAL_LIBS dl)
   endif(NOT MINGW)
   list(APPEND EXTERNAL_LIBS "-Wl,-Bdynamic")
endif(MSVC)

set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS $<$<CONFIG:Debug>:_DEBUG>)
if(UNIX) #this is true for all the linux systems but not for cross compiling
   #find a static version of openssl crypto library
   SET ( OPENSSL_USE_STATIC_LIBS ON )
   find_package(OpenSSL REQUIRED COMPONENTS Crypto)
   include_directories(${OPENSSL_INCLUDE_DIR})
    list(APPEND EXTERNAL_LIBS ${OPENSSL_CRYPTO_LIBRARY})
   MESSAGE(STATUS "Found openssl version ${OPENSSL_VERSION} ")
   #Zlib required when openssl version < 1.0.1f
   SET ( ZLIB_USE_STATIC_LIBS ON )
   find_package(ZLIB REQUIRED)
   list(APPEND EXTERNAL_LIBS ${ZLIB_LIBRARIES})
   MESSAGE(STATUS "Found zlib version ${ZLIB_VERSION} ")
   if(NOT MINGW)
       list(APPEND EXTERNAL_LIBS "-ldl") 
   endif(NOT MINGW)
   find_program( MEMORYCHECK_COMMAND valgrind )
   set( MEMORYCHECK_COMMAND_OPTIONS "--trace-children=yes --leak-check=full" )
endif(UNIX)

SET_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS $<$<CONFIG:Debug>:_DEBUG>)

if(CMAKE_SIZEOF_VOID_P EQUAL 8)
  SET(HAVE_64BIT_SIZE_T 1)
@@ -94,7 +93,18 @@
  SET(HAVE_64BIT_SIZE_T 0)
endif(CMAKE_SIZEOF_VOID_P EQUAL 8)

set( Boost_USE_STATIC_LIBS ON )
#bug in cmake win32 - can't find boost compiled with mingw 
if(WIN32 AND "x${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}" STREQUAL "x")
    message(WARNING "WIN32 compiler does not specify CMAKE_CXX_COMPILER_ARCHITECTURE_ID -- filling in manually")
    if(CMAKE_SIZEOF_VOID_P EQUAL 8)
        set(CMAKE_CXX_COMPILER_ARCHITECTURE_ID "x64")
    else()
        set(CMAKE_CXX_COMPILER_ARCHITECTURE_ID "x86")
    endif()
    message(STATUS "Compiler architecture: ${CMAKE_CXX_COMPILER_ARCHITECTURE_ID}")
endif()

SET( Boost_USE_STATIC_LIBS ON )
find_package(Boost REQUIRED COMPONENTS date_time unit_test_framework program_options system filesystem)
#set below in case of dynamic linking in debug.
#set_property(DIRECTORY APPEND PROPERTY COMPILE_DEFINITIONS $<$<CONFIG:Debug>:BOOST_TEST_DYN_LINK>)