This call to set_target_properties would typically remove the "lib"
prefix from the library name for no reason, causing some systems to not
be able to find it when calling find_package().
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MinGW already distributes OpenGL headers and libraries under different
directories. In such cases, it is more sensible to rely on those than
the in-tree copies maintained by the project.
Note that, for some unknown reason, the include directories for the
OpenGL::GL target are not filled, even if find_package(OpenGL) is
successful and the library is found. Therefore, this commit works around
this limitation by finding GL/gl.h from a possible list of directories
inside the toolchain.
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If the user configures the project with a CMAKE_PREFIX_PATH, subprojects
such as xmlversion would not be configured correctly because its
CMAKE_ARGS would expand -DCMAKE_PREFIX_PATH to:
${PROJECT_SOURCE_DIR}/3rdParty ${CMAKE_PREFIX_PATH}
And this whitespace-separated list would be refused when configuring
xmlversion.
This has one side effect: the user is now required to always assign
CMAKE_PREFIX_PATH when configuring the project, and therefore not rely
on the 3rdParty directory to be available from the root directory.
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These libraries must be installed into the bin/ directory in order to
run the speed-dreams-2 executable.
Note that MinGW is distributed with several flavours and therefore might
define different names for libgcc. [1] libstdc++-6.dll has also been
found on different directories depending on the flavour. On the other
hand, libssp might not be available on some distributions, so it remains
optional.
[1]: https://wiki.unvanquished.net/wiki/MinGW
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Otherwise, libenet.dll would not be installed into the bin/ directory
and speed-dreams-2 would be unable to run.
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These libraries are defined by the FreeSOLID project and required by
the speed-dreams-2 executable. However, for some unknown reason,
upstream does not install() them, so it must be patched.
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Future commits will patch these files so as to fix issues with
FreeSOLID's upstream build system.
These files have been copied from the 2.1.2 release.
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Assigning this variable to "" causes some library names to contain the
double quotes e.g.: broad"".dll.
This fixes a build error from [MSBuild]::NormalizePath when using MSVC
as the C++ toolchain.
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There is no need to remove the assignment to CMAKE_DEBUG_POSTFIX on the
CMakeLists.txt since it is explicitly assigned by the call to
ExternalProject_Add.
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xmlversion is meant to be a build-time tool, which means it must never
be cross-compiled. Since toolchain settings are shared among all
libraries within a project, the only way in CMake to build an executable
using the host toolchain (instead of the cross-toolchain) is to define
it inside of an ExternalProject.
xmlversion also depends on several in-house libraries that must be also
build with the host toolchain, so those libraries shall be both
cross-compiled and natively compiled.
On the other hand, since a known install prefix is assigned to
xmlversion, _XMLVER_EXE, _XMLVER_DIR and _XMLVER_NAME no longer need to
be calculated.
Note that CMAKE_FIND_ROOT_PATH must not be passed to the ExternalProject
since xmlversion must never be cross-compiled.
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This library is not defined by the x86_64-w64-mingw32 toolchain, and it
is not required by the project, either.
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Otherwise, target_link_libraries would be unable to find the library
path when using a target name e.g.: rhash::rhash.
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ADD_INTERFACE_INCLUDEDIR relied on legacy CMake macros such as
INCLUDE_DIRECTORIES. Nowadays, targets do not specify their
dependencies' include directories, but just call target_link_libraries
so that CMake takes care of the rest.
Of course, that requires every target to define their own include
directories, if any, via target_include_directories.
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The intention behind this overly complicated code was to find the
path to the top-level directory, which can be easily achieved via
CMAKE_SOURCE_DIR.
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Otherwise, builds that do not rely on standard search paths (e.g.:
Windows builds using a relative 3rdParty/ directory) would not be able
to find SDL2 libraries or header files.
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This macro, along with _FIND_3RDPARTY_DEPENDENCY and
_FIND_3RDPARTY_DEPENDENCIES, was meant to tell find_package() and
friends about non-standard paths to find libraries when building for
Windows.
However, the same effect can be achieved via the standard CMake
variables CMAKE_PREFIX_PATH [1] and CMAKE_FIND_ROOT_PATH [2].
If cross-compiling, CMAKE_FIND_ROOT_PATH must be assigned when
configuring the project. This means the project must now be configured
with:
cmake -B <build-dir> -DCMAKE_FIND_ROOT_PATH=<root-dir>/3rdParty ...
[1]: https://cmake.org/cmake/help/latest/variable/CMAKE_PREFIX_PATH.html
[2]: https://cmake.org/cmake/help/latest/variable/CMAKE_FIND_ROOT_PATH.html
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Otherwise, OpenSceneGraph would fail to configure with:
-- Performing Test _OPENTHREADS_ATOMIC_USE_GCC_BUILTINS
CMake Error: TRY_RUN() invoked in cross-compiling mode, please set the following cache variables appropriately:
_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS_EXITCODE (advanced)
_OPENTHREADS_ATOMIC_USE_GCC_BUILTINS_EXITCODE__TRYRUN_OUTPUT (advanced)
-- Performing Test _OPENTHREADS_ATOMIC_USE_GCC_BUILTINS - Failed
-- Performing Test _OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS
-- Performing Test _OPENTHREADS_ATOMIC_USE_MIPOSPRO_BUILTINS - Failed
-- Performing Test _OPENTHREADS_ATOMIC_USE_SUN
-- Performing Test _OPENTHREADS_ATOMIC_USE_SUN - Failed
-- Performing Test _OPENTHREADS_ATOMIC_USE_WIN32_INTERLOCKED
CMake Error: TRY_RUN() invoked in cross-compiling mode, please set the following cache variables appropriately:
_OPENTHREADS_ATOMIC_USE_WIN32_INTERLOCKED_EXITCODE (advanced)
_OPENTHREADS_ATOMIC_USE_WIN32_INTERLOCKED_EXITCODE__TRYRUN_OUTPUT (advanced)
-- Performing Test _OPENTHREADS_ATOMIC_USE_WIN32_INTERLOCKED - Failed
-- Performing Test _OPENTHREADS_ATOMIC_USE_BSD_ATOMIC
-- Performing Test _OPENTHREADS_ATOMIC_USE_BSD_ATOMIC - Failed
Note: in the case of the x86_64-w64-mingw32 cross-toolchain, this
commit requires the win32 thread model.
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Even if the library name on the "LIBRARY" directive from a .def
file is defined as optional according to the specification [1],
MinGW requires it anyway. Otherwise, the linker would throw the
following error message:
.def: file format not recognized; treating as linker script
Even if this had been already reported as an issue many years ago [2],
it can still be reproduced on x86_64-w64-mingw32-ld-win32 2.43.
[1]: http://msdn2.microsoft.com/en-us/library/30fw19zw
[2]: https://lists.gnu.org/archive/html/bug-binutils/2006-03/msg00147.html
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Future commits shall patch these files to fix some build-time issues in
Windows. Since CMake lacks a PATCH command as of the time of this
writing, files must be copied entirely.
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When calling find_package(CURL), different files might be inspected:
- $CMAKE_PREFIX/Modules/FindCURL.cmake
- 3rdParty/lib/cmake/CURL/CURLConfig.cmake
Which file is selected is decided by CMake depending on the context.
Unfortunately, whereas the former defines CURL_LIBRARY, the latter
does not.
However, both define the CURL::libcurl target, from which the library
location can be retrieved with get_property() so as to achieve the
same effect.
Fixing this also makes CURL_NO_CURL_CMAKE redundant.
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There were several errors when building OpenSceneGraph for Windows:
- using namespace std caused ambiguity with some symbols, and
DisplaySettings.cpp was already prepending std:: to all standard
symbols.
- ChangeDisplaySettingsEx returns a LONG [1], so casting to unsigned int
causes loss of precisions in some platforms.
[1]: https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-changedisplaysettingsexa
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Future commits shall patch these files to fix some build-time issues in
Windows. Since CMake lacks a PATCH command as of the time of this
writing, files must be copied entirely.
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There are several errors when building plib for Windows:
- Casting a pointer to DWORD is unsafe because they might have different
sizes. DWORD_PTR [1] must be used instead.
- Casting a pointer to long is unsafe because they might have different
sizes. ptrdiff_t must be used for pointer arithmetic.
- slDSP::counter is private so it cannot be used by waveOutProc. A
public function is now defined to achieve the expected behaviour.
[1]: https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-dtyp/66d61dd8-2191-4a37-b963-e49bf0dc2579
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Future commits shall patch these files to fix some build-time issues in
Windows. Since, as of the time of this writing, CMake lacks a PATCH
command, files must be copied entirely.
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These are in fact not required.
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These are in fact not required.
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This should make the build simpler and less prone to build-time errors.
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cJSON simply does not depend on zlib, so there is no need to add the
build-time dependency.
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This library is still not used by the project.
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The Windows build of the project completely relies on shared libraries
and makes no use of static libraries.
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This standard CMake variable allows CMake to find dependencies on
non-standard directories, such as ${EXTERNALS_INSTALL_DIR}.
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Upstream rhash relies on a configure script, which is not portable to
non-POSIX platforms such as Windows.
Note: CMake support in rhash is only experimental [1] and currently
relies on in-house patches introduced by previous commits.
[1]: https://github.com/rhash/RHash/pull/103
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Upstream rhash requires to define RHASH_XVERSION as:
printf "0x%02x%02x%02x%02x" major minor patch 0
However, the CMakeLists.txt introduced by the experimental branch [1]
did not include this definition.
Since calculating this string requires complex string manipulation in
CMake, a new file, namely rhash-tohex.cmake, and a function with the
same name have been introduced.
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The experimental branch that introduced this CMakeLists.txt [1] is
probably outdated and does not reflect the current tree structure.
Note that test_lib.{c,h} and test_utils.{c,h} have been intentionally
left out since they are not meant to be part of the rhash library.
[1]: https://github.com/rhash/RHash/pull/103
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CMake support is only available from an experimental branch [1].
Future commits shall replace the rhash build defined on
3rdParty-devel/CMakeLists.txt so as to use CMake over the ad-hoc
configure script defined by upstream rhash.
The reason behind the change is to allow non-POSIX platforms (e.g.:
Windows) to configure the rhash project using CMake.
[1]: https://github.com/rhash/RHash/pull/103
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This standard CMake variable allows to cross-build the project using a
so-called "toolchain file", which defines the cross-toolchain.
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These warnings are not relevant for other CMake generators, such as
"Unix Makefiles".
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Windows systems are case-insensitive. However, POSIX systems could fail
to find libwinmm.a, as distributed by the x86_64-w64-mingw32
cross-toolchain.
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Whereas Windows systems are case-insensitive, POSIX systems could fail
to find libssgAux accordingly.
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For some unknown reason, HAVE_CONFIG_H is left undefined for Windows.
However, tgf.cpp has some references to SD_BUILD_INFO_SYSTEM and other
macros provided by config.h.
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This source file depends on VERSION_LONG, which is defined by config.h.
git-svn-id: https://svn.code.sf.net/p/speed-dreams/code/trunk@9558 30fe4595-0a0c-4342-8851-515496e4dcbd
Former-commit-id: 97290e42ecae6346c00ca6771368fb9a266ad5c5
Former-commit-id: a2ba63b918f8c04a032b87726b1d4bf143da6741
