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Building FlightGear - Cross Compiling: Difference between revisions
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→Issues: === osg-earth compilation trouble ===
Hamzaalloush (talk | contribs) (→*.mk file template: comma acts as ELSE.) |
Hamzaalloush (talk | contribs) (→Issues: === osg-earth compilation trouble ===) |
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* For building OSG applications out-of-source-trees, it would make sense to introduce -DCMAKE_INSTALL_PREFIX, so that FindOpenSceneGraph.cmake can easily locate pre-installed OSG versions (as per our docs, and the existing cmake machinery in place in SG/FG), which also means that OSG would not need to be installed system-wide, while also supporting different versions at the same time. | * For building OSG applications out-of-source-trees, it would make sense to introduce -DCMAKE_INSTALL_PREFIX, so that FindOpenSceneGraph.cmake can easily locate pre-installed OSG versions (as per our docs, and the existing cmake machinery in place in SG/FG), which also means that OSG would not need to be installed system-wide, while also supporting different versions at the same time. | ||
* We keep seeing people asking for ways to have an entirely self-contained FlightGear setup that doesn't require any installation (e.g. either all files residing in a single folder or the whole binary linked statically) - we used to support this a few years go, and we even had people using FG on a USB drive, or on boot-able drives - and we commonly suggest that people first try running FG on computers before purchasing any new hardware - so it would make sense to look at what's needed to still support static builds using the mxe tool chain. This may involve making the static/dynamic configuration options configurable in the corresponding *.mk files. | * We keep seeing people asking for ways to have an entirely self-contained FlightGear setup that doesn't require any installation (e.g. either all files residing in a single folder or the whole binary linked statically) - we used to support this a few years go, and we even had people using FG on a USB drive, or on boot-able drives - and we commonly suggest that people first try running FG on computers before purchasing any new hardware - so it would make sense to look at what's needed to still support static builds using the mxe tool chain. This may involve making the static/dynamic configuration options configurable in the corresponding *.mk files. | ||
=== osg-earth compilation trouble (you can delete if you solve)=== | |||
osg-earth has both CMake and autotools generators provided by source, i'm using a basic CMake config: | |||
<syntaxhighlight lang="make"> | |||
PKG := osgearth | |||
$(PKG)_IGNORE := | |||
$(PKG)_VERSION := 2.6.1 | |||
$(PKG)_CHECKSUM := 4c68efb9e413a5d78fffa2142e3e2998d3535939 | |||
$(PKG)_SUBDIR := gwaldron-osgearth-350f1a0 | |||
$(PKG)_FILE := gwaldron-osgearth-350f1a0.tar.gz | |||
$(PKG)_URL := https://github.com/gwaldron/osgearth/tarball/osgearth-2.6 | |||
$(PKG)_DEPS := gcc openscenegraph curl gdal geos | |||
... | |||
define $(PKG)_BUILD | |||
mkdir '$(1).build' | |||
cd '$(1).build' && cmake '$(1)' \ | |||
-DCMAKE_TOOLCHAIN_FILE='$(CMAKE_TOOLCHAIN_FILE)' | |||
$(MAKE) -C '$(1).build' -j '$(JOBS)' install VERBOSE=1 | |||
endef</syntaxhighlight> | |||
i'm getting GEOS related undefiend references, see: [https://trac.osgeo.org/geos/ticket/552] | |||
<syntaxhighlight lang="bash">CMakeFiles/osgEarthSymbology.dir/objects.a(GEOS.cpp.obj):GEOS.cpp:(.text+0xb0): undefined reference to `geos::geom::PrecisionModel::~PrecisionModel()' | |||
CMakeFiles/osgEarthSymbology.dir/objects.a(GEOS.cpp.obj):GEOS.cpp:(.text+0x20b): undefined reference to `geos::geom::Coordinate::Coordinate(double, double, double)' | |||
CMakeFiles/osgEarthSymbology.dir/objects.a(GEOS.cpp.obj):GEOS.cpp:(.text+0x649): undefined reference to `geos::geom::GeometryFactory::getCoordinateSequenceFactory() const' | |||
CMakeFiles/osgEarthSymbology.dir/objects.a(GEOS.cpp.obj):GEOS.cpp:(.text+0x792): undefined reference to `geos::geom::GeometryFactory::getCoordinateSequenceFactory() const' | |||
CMakeFiles/osgEarthSymbology.dir/objects.a(GEOS.cpp.obj):GEOS.cpp:(.text+0x7d3): undefined reference to `geos::geom::GeometryFactory::getCoordinateSequenceFactory() const' | |||
CMakeFiles/osgEarthSymbology.dir/objects.a(GEOS.cpp.obj):GEOS.cpp:(.text+0x846): undefined reference to `geos::geom::GeometryFactory::getCoordinateSequenceFactory() const' | |||
collect2: error: ld returned 1 exit status | |||
make[4]: *** [lib/libosgEarthSymbology.dll] Error 1</syntaxhighlight> | |||
stock geos.mk shared libraries is bieng built with these options: "-pedantic -ansi", there is also an MXE patch applied to fix static builds too, might be a hint. | |||
{{Building}} | {{Building}} | ||
[[Category:Core developer documentation]] | [[Category:Core developer documentation]] | ||