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terragear/CMakeModules/FindSimGear.cmake
2023-05-07 15:25:56 -05:00

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8.6 KiB
CMake

# Locate SimGear
# This module defines
# SIMGEAR_CORE_LIBRARIES, a list of the core static libraries
# SIMGEAR_LIBRARIES, a list of all the static libraries (core + scene)
# SIMGEAR_FOUND, if false, do not try to link to SimGear
# SIMGEAR_INCLUDE_DIR, where to find the headers
#
# $SIMGEAR_DIR is an environment variable that would
# correspond to the ./configure --prefix=$SIMGEAR_DIR
# used in building SimGear.
#
# Created by James Turner. This was influenced by the FindOpenAL.cmake module.
#=============================================================================
# Copyright 2005-2009 Kitware, Inc.
#
# Distributed under the OSI-approved BSD License (the "License");
# see accompanying file Copyright.txt for details.
#
# This software is distributed WITHOUT ANY WARRANTY; without even the
# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the License for more information.
#=============================================================================
# (To distributed this file outside of CMake, substitute the full
# License text for the above reference.)
include(SelectLibraryConfigurations)
macro(find_sg_library libName varName libs)
set(libVarName "${varName}_LIBRARY")
# do not cache the library check
# unset(${libVarName}_DEBUG CACHE)
# unset(${libVarName}_RELEASE CACHE)
FIND_LIBRARY(${libVarName}_DEBUG
NAMES ${libName}${CMAKE_DEBUG_POSTFIX}
HINTS $ENV{SIMGEAR_DIR}
PATH_SUFFIXES ${CMAKE_INSTALL_LIBDIR} lib64 lib libs64 libs libs/Win32 libs/Win64
PATHS
/usr/local
/usr
/opt
)
FIND_LIBRARY(${libVarName}_RELEASE
NAMES ${libName}${CMAKE_RELEASE_POSTFIX}
HINTS $ENV{SIMGEAR_DIR}
PATH_SUFFIXES ${CMAKE_INSTALL_LIBDIR} lib64 lib libs64 libs libs/Win32 libs/Win64
PATHS
/usr/local
/usr
/opt
)
# message(STATUS "before: Simgear ${${libVarName}_RELEASE} ")
# message(STATUS "before: Simgear ${${libVarName}_DEBUG} ")
select_library_configurations( ${varName} )
# message(STATUS "after:Simgear ${${libVarName}_RELEASE} ")
# message(STATUS "after:Simgear ${${libVarName}_DEBUG} ")
set(componentLibRelease ${${libVarName}_RELEASE})
# message(STATUS "Simgear ${libVarName}_RELEASE ${componentLibRelease}")
set(componentLibDebug ${${libVarName}_DEBUG})
# message(STATUS "Simgear ${libVarName}_DEBUG ${componentLibDebug}")
if (NOT ${libVarName}_DEBUG)
if (NOT ${libVarName}_RELEASE)
# message(STATUS "found ${componentLib}")
list(APPEND ${libs} ${componentLibRelease})
endif()
else()
list(APPEND ${libs} optimized ${componentLibRelease} debug ${componentLibDebug})
endif()
endmacro()
FIND_PATH(SIMGEAR_INCLUDE_DIR simgear/math/SGMath.hxx
HINTS $ENV{SIMGEAR_DIR}
PATH_SUFFIXES include
PATHS
~/Library/Frameworks
/Library/Frameworks
/usr/local
/usr
/opt
)
# make sure the simgear include directory exists
if (NOT SIMGEAR_INCLUDE_DIR)
message(FATAL_ERROR "Cannot find SimGear includes! (Forgot 'make install' for SimGear?) "
"Compile & INSTALL SimGear before configuring FlightGear. "
"When using non-standard locations, use 'SIMGEAR_DIR' to configure the SimGear location.")
endif()
message(STATUS "SimGear include directory: ${SIMGEAR_INCLUDE_DIR}")
# read the simgear version header file, get the version
file(READ ${SIMGEAR_INCLUDE_DIR}/simgear/version.h SG_VERSION_FILE)
# make sure the simgear/version.h header exists
if (NOT SG_VERSION_FILE)
message(FATAL_ERROR "Found SimGear, but it does not contain a simgear/version.h include! "
"SimGear installation is incomplete or mismatching.")
endif()
string(STRIP "${SG_VERSION_FILE}" SIMGEAR_DEFINE)
string(REPLACE "#define SIMGEAR_VERSION " "" SIMGEAR_VERSION "${SIMGEAR_DEFINE}")
if(NOT SIMGEAR_VERSION)
message(FATAL_ERROR "Unable to find SimGear or simgear/version.h does not exist/is invalid. "
"Make sure you have installed the SimGear ${SimGear_FIND_VERSION} includes. "
"When using non-standard locations, please use 'SIMGEAR_DIR' "
"to select the SimGear library location to be used.")
endif()
message(STATUS "found SimGear version: ${SIMGEAR_VERSION} (needed ${SimGear_FIND_VERSION} or higher)")
if(${SIMGEAR_VERSION} VERSION_LESS ${SimGear_FIND_VERSION})
message(FATAL_ERROR "You have installed a mismatching SimGear version ${SIMGEAR_VERSION} "
"instead of ${SimGear_FIND_VERSION} or higher as required by TerraGear. "
"When using multiple SimGear installations, please use 'SIMGEAR_DIR' "
"to select the SimGear library location to be used.")
endif(${SIMGEAR_VERSION} VERSION_LESS ${SimGear_FIND_VERSION})
# dependent packages
find_package(ZLIB REQUIRED)
find_package(Threads REQUIRED)
if(SIMGEAR_SHARED)
message(STATUS "looking for shared Simgear libraries")
find_sg_library(SimGearCore SIMGEAR_CORE SIMGEAR_CORE_LIBRARIES)
find_sg_library(SimGearScene SIMGEAR_SCENE SIMGEAR_LIBRARIES)
list(APPEND SIMGEAR_LIBRARIES ${SIMGEAR_CORE_LIBRARIES})
set(SIMGEAR_CORE_LIBRARY_DEPENDENCIES "")
set(SIMGEAR_SCENE_LIBRARY_DEPENDENCIES "")
# message(STATUS "core lib ${SIMGEAR_CORE_LIBRARIES}")
# message(STATUS "all libs ${SIMGEAR_LIBRARIES}")
else(SIMGEAR_SHARED)
set(SIMGEAR_LIBRARIES "") # clear value
set(SIMGEAR_CORE_LIBRARIES "") # clear value
message(STATUS "looking for static SimGear libraries")
find_sg_library(SimGearCore SIMGEAR_CORE SIMGEAR_CORE_LIBRARIES)
find_sg_library(SimGearScene SIMGEAR_SCENE SIMGEAR_LIBRARIES)
# again link order matters - scene libraries depend on core ones
list(APPEND SIMGEAR_LIBRARIES ${SIMGEAR_CORE_LIBRARIES})
set(SIMGEAR_CORE_LIBRARY_DEPENDENCIES
${CMAKE_THREAD_LIBS_INIT}
${ZLIB_LIBRARY})
if(WIN32)
list(APPEND SIMGEAR_CORE_LIBRARY_DEPENDENCIES ws2_32.lib Shlwapi.lib Winmm.lib)
endif(WIN32)
if(NOT MSVC)
# basic timing routines on non windows systems, may be also cygwin?!
check_library_exists(rt clock_gettime "" have_rt)
if(have_rt)
list(APPEND SIMGEAR_CORE_LIBRARY_DEPENDENCIES rt)
endif(have_rt)
endif(NOT MSVC)
endif(SIMGEAR_SHARED)
if((NOT SIMGEAR_CORE_LIBRARIES) OR (NOT SIMGEAR_LIBRARIES))
message(FATAL_ERROR "Cannot find SimGear libraries! (Forgot 'make install' for SimGear?) "
"Compile & INSTALL SimGear before configuring TerraGear. "
"When using non-standard locations, use 'SIMGEAR_DIR' to configure the SimGear location.")
else()
message(STATUS "found SimGear libraries")
endif()
# now we've found SimGear, try test-compiling using its includes
include(CheckCXXSourceRuns)
SET(CMAKE_REQUIRED_INCLUDES ${SIMGEAR_INCLUDE_DIR})
# clear cache, run a fresh compile test every time
unset(SIMGEAR_COMPILE_TEST CACHE)
# disable OSG dependencies for test-compiling
set(CMAKE_REQUIRED_DEFINITIONS "-DNO_OPENSCENEGRAPH_INTERFACE")
if ((NOT CMAKE_CXX_STANDARD) OR (${CMAKE_CXX_STANDARD} LESS 11))
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED YES)
if(CMAKE_COMPILER_IS_GNUCXX AND CMAKE_VERSION VERSION_LESS 3.1)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
elseif (MSVC AND CMAKE_VERSION VERSION_LESS 3.1)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /std=c++11")
endif()
endif()
check_cxx_source_runs(
"#include <cstdio>
#include \"simgear/version.h\"
#include \"simgear/math/SGMath.hxx\"
#define xstr(s) str(s)
#define str(s) #s
#define MIN_MAJOR ${SimGear_FIND_VERSION_MAJOR}
#define MIN_MINOR ${SimGear_FIND_VERSION_MINOR}
#define MIN_MICRO ${SimGear_FIND_VERSION_PATCH}
int main() {
int major, minor, micro;
/* printf(%d.%d.%d or greater, , MIN_MAJOR, MIN_MINOR, MIN_MICRO); */
printf(\"found %s ... \", xstr(SIMGEAR_VERSION));
sscanf( xstr(SIMGEAR_VERSION), \"%d.%d.%d\", &major, &minor, &micro );
if ( (major < MIN_MAJOR) ||
(major == MIN_MAJOR && minor < MIN_MINOR) ||
(major == MIN_MAJOR && minor == MIN_MINOR && micro < MIN_MICRO) ) {
return -1;
}
return 0;
}
"
SIMGEAR_COMPILE_TEST)
if(NOT SIMGEAR_COMPILE_TEST)
message(FATAL_ERROR "Oops, you have installed SimGear includes, however test compiling failed. "
"Try removing 'CMakeCache.txt' and reconfigure with 'cmake'.")
endif()
unset(CMAKE_REQUIRED_DEFINITIONS)
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(SimGear DEFAULT_MSG
SIMGEAR_LIBRARIES SIMGEAR_CORE_LIBRARIES SIMGEAR_INCLUDE_DIR SIMGEAR_COMPILE_TEST)