Commit d5c3e4ac authored by Robert Maynard's avatar Robert Maynard
Browse files

cmake: add support for --toolchain command argument

parent 13838bbb
......@@ -76,6 +76,10 @@
native build system to choose a compiler or SDK. See the
:variable:`CMAKE_GENERATOR_PLATFORM` variable for details.
``--toolchain <path-to-file>``
Specify the cross compiling toolchain file, equivalant to setting
:variable:`CMAKE_TOOLCHAIN_FILE` variable.
``--install-prefix <directory>``
Specify the installation directory, used by the
:variable:`CMAKE_INSTALL_PREFIX` variable. Must be an absolute path.
......
......@@ -96,8 +96,8 @@ Cross Compiling
===============
If :manual:`cmake(1)` is invoked with the command line parameter
``-DCMAKE_TOOLCHAIN_FILE=path/to/file``, the file will be loaded early to set
values for the compilers.
``--toolchain path/to/file`` or ``-DCMAKE_TOOLCHAIN_FILE=path/to/file``, the
file will be loaded early to set values for the compilers.
The :variable:`CMAKE_CROSSCOMPILING` variable is set to true when CMake is
cross-compiling.
......
cmake-toolchain-command
----------------------------
* The :manual:`cmake(1)` command gained the ``--toolchain <path/to/file>``
command line option to specify a toolchain file.
......@@ -509,6 +509,16 @@ bool cmake::SetCacheArgs(const std::vector<std::string>& args)
return false;
};
auto ToolchainLambda = [&](std::string const& path, cmake* state) -> bool {
const std::string var = "CMAKE_TOOLCHAIN_FILE";
cmStateEnums::CacheEntryType type = cmStateEnums::FILEPATH;
#ifndef CMAKE_BOOTSTRAP
state->UnprocessedPresetVariables.erase(var);
#endif
state->ProcessCacheArg(var, path, type);
return true;
};
std::vector<CommandArgument> arguments = {
CommandArgument{ "-D", "-D must be followed with VAR=VALUE.",
CommandArgument::Values::One, DefineLambda },
......@@ -530,6 +540,8 @@ bool cmake::SetCacheArgs(const std::vector<std::string>& args)
CommandArgument{ "-P", "-P must be followed by a file name.",
CommandArgument::Values::One, ScriptLambda },
CommandArgument{ "--toolchain", "No file specified for --toolchain",
CommandArgument::Values::One, ToolchainLambda },
CommandArgument{ "--install-prefix",
"No install directory specified for --install-prefix",
CommandArgument::Values::One, PrefixLambda },
......@@ -835,6 +847,8 @@ void cmake::SetArgs(const std::vector<std::string>& args)
CommandArgument::Values::One, PlatformLambda },
CommandArgument{ "-T", "No toolset specified for -T",
CommandArgument::Values::One, ToolsetLamda },
CommandArgument{ "--toolchain", "No file specified for --toolchain",
CommandArgument::Values::One, IgnoreAndTrueLambda },
CommandArgument{ "--install-prefix",
"No install directory specified for --install-prefix",
CommandArgument::Values::One, IgnoreAndTrueLambda },
......
......@@ -712,6 +712,8 @@ private:
"Specify toolset name if supported by generator." }, \
{ "-A <platform-name>", \
"Specify platform name if supported by generator." }, \
{ "--toolchain <file>", \
"Specify toolchain file [CMAKE_TOOLCHAIN_FILE]." }, \
{ "--install-prefix <directory>", \
"Specify install directory [CMAKE_INSTALL_PREFIX]." }, \
{ "-Wdev", "Enable developer warnings." }, \
......
......@@ -61,7 +61,6 @@ run_cmake_command(build-bad-dir
run_cmake_command(build-bad-generator
${CMAKE_COMMAND} --build ${RunCMake_SOURCE_DIR}/cache-bad-generator)
run_cmake_command(install-prefix-no-arg ${CMAKE_COMMAND} -B DummyBuildDir --install-prefix)
run_cmake_command(install-no-dir
......@@ -153,6 +152,29 @@ project(ExplicitDirsMissing LANGUAGES NONE)
endfunction()
run_ExplicitDirs()
function(run_Toolchain)
set(RunCMake_TEST_NO_SOURCE_DIR 1)
set(source_dir ${RunCMake_SOURCE_DIR}/Toolchain)
run_cmake_with_options(toolchain-no-arg -S ${source_dir} --toolchain=)
run_cmake_with_options(toolchain-valid-abs-path -S ${source_dir} --toolchain "${source_dir}/toolchain.cmake")
run_cmake_with_options(toolchain-valid-rel-src-path -S ${source_dir} --toolchain=toolchain.cmake)
set(RunCMake_TEST_NO_CLEAN 1)
set(binary_dir ${RunCMake_BINARY_DIR}/Toolchain-build)
set(RunCMake_TEST_BINARY_DIR "${binary_dir}")
file(REMOVE_RECURSE "${binary_dir}")
# Test that we both search the binary dir for toolchain files, and it takes
# precedence over source dir
file(WRITE ${binary_dir}/toolchain.cmake [=[
set(CMAKE_SYSTEM_NAME Linux)
set(toolchain_file binary_dir)
]=])
run_cmake_with_options(toolchain-valid-rel-build-path ${CMAKE_COMMAND} -S ${source_dir} -B ${binary_dir} --toolchain toolchain.cmake)
endfunction()
run_Toolchain()
function(run_BuildDir)
# Use a single build tree for a few tests without cleaning.
set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/BuildDir-build)
......
cmake_minimum_required(VERSION 3.20)
project(Toolchain LANGUAGES NONE)
message(FATAL_ERROR "${toolchain_file}")
set(CMAKE_SYSTEM_NAME Linux)
set(toolchain_file source_dir)
^CMake Error: No file specified for --toolchain
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