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More talkative cmake SimGear checks

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Give details whether includes or libraries are missing,
or if (and how) the version mismatches.
Also require an exact simgear/flightgear version match.
This commit is contained in:
ThorstenB 2012-02-19 20:20:12 +01:00
parent 511072f206
commit f589f2c405
1 changed files with 54 additions and 12 deletions
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64
CMakeModules/FindSimGear.cmake
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@ -29,6 +29,9 @@ 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}
@ -90,7 +93,33 @@ FIND_PATH(SIMGEAR_INCLUDE_DIR simgear/math/SGMath.hxx
/opt
)
# message(STATUS ${SIMGEAR_INCLUDE_DIR})
# 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}")
# make sure the simgear/version.h header exists
if (NOT EXISTS ${SIMGEAR_INCLUDE_DIR}/simgear/version.h)
message(FATAL_ERROR "Found SimGear, but it does not contain a simgear/version.h include! "
"SimGear installation is incomplete.")
endif()
# read the simgear version header file, get the version
file(READ ${SIMGEAR_INCLUDE_DIR}/simgear/version.h sgVersionFile)
string(STRIP ${sgVersionFile} SIMGEAR_DEFINE)
string(REPLACE "#define SIMGEAR_VERSION " "" SIMGEAR_VERSION ${SIMGEAR_DEFINE})
message(STATUS "found SimGear version: ${SIMGEAR_VERSION} (needed ${SimGear_FIND_VERSION})")
if(NOT ${SIMGEAR_VERSION} EQUAL ${SimGear_FIND_VERSION})
message(FATAL_ERROR "You have installed a mismatching SimGear version ${SIMGEAR_VERSION} "
"instead of ${SimGear_FIND_VERSION} as required by FlightGear. "
"When using multiple SimGear installations, please use 'SIMGEAR_DIR' "
"to select the SimGear library location to be used.")
endif()
# dependent packages
find_package(ZLIB REQUIRED)
@ -113,7 +142,7 @@ else(SIMGEAR_SHARED)
set(SIMGEAR_LIBRARIES "") # clear value
set(SIMGEAR_CORE_LIBRARIES "") # clear value
message(STATUS "looking for static Simgear libraries")
message(STATUS "looking for static SimGear libraries")
# note the order here affects the order Simgear libraries are
# linked in, and hence ability to link when using a traditional
@ -156,7 +185,6 @@ else(SIMGEAR_SHARED)
find_sg_component(${component} SIMGEAR_LIBRARIES)
endforeach()
# again link order matters - scene libraries depend on core ones
list(APPEND SIMGEAR_LIBRARIES ${SIMGEAR_CORE_LIBRARIES})
@ -187,17 +215,26 @@ else(SIMGEAR_SHARED)
endif(NOT MSVC)
endif(SIMGEAR_SHARED)
# now we've found SimGear, check its version
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 FlightGear. "
"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)
message(STATUS "looking for version: ${SimGear_FIND_VERSION}")
SET(CMAKE_REQUIRED_INCLUDES ${SIMGEAR_INCLUDE_DIR})
# clear cache, run a fresh compile test every time
unset(SIMGEAR_COMPILE_TEST CACHE)
check_cxx_source_runs(
"#include <cstdio>
#include \"simgear/version.h\"
#include \"simgear/math/SGMath.hxx\"
#define xstr(s) str(s)
#define str(s) #s
@ -214,18 +251,23 @@ check_cxx_source_runs(
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) ) {
if ( (major != MIN_MAJOR) ||
(minor != MIN_MINOR) ||
(micro != MIN_MICRO) ) {
return -1;
}
return 0;
}
"
SIMGEAR_VERSION_OK)
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()
include(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(SimGear DEFAULT_MSG
SIMGEAR_LIBRARIES SIMGEAR_INCLUDE_DIR SIMGEAR_VERSION_OK)
SIMGEAR_LIBRARIES SIMGEAR_CORE_LIBRARIES SIMGEAR_INCLUDE_DIR SIMGEAR_COMPILE_TEST)