* Fix a way of wiping CMake cache entry values defined by toolchain from a command line, in case user specified empty values for these cache entries explicitly in cmake_external target
- it was a problem that we did not check that there was some value in the "toolchain" dict before we pop() - reported in comment in #292
- make code which does wiping empty values more explicit
* Additionally, if non-empty value for CMAKE_RANLIB was not specified by user or Bazel toolchain, put empty value for it to forbid CMake to auto detect it
context: https://github.com/bazelbuild/rules_foreign_cc/issues/252
* Add test for user's redefined value for CMAKE_BUILD_TYPE
* fix(cmake): Use "Debug" and "Release" instead of "DEBUG" and "RELEASE"
These values are case-sensitive in cmake and give this error currently:
```
CMake Error at CMakeLists.txt:23 (message):
CMAKE_BUILD_TYPE must be one of: Debug, Release (current value: 'RELEASE')
```
* update test data
* Windows, tests: fix for native test wrapper
In this PR:
- Update `@bazel_skylib` to 0.8.0, which has a
Windows-compatible unittest.bzl
- Fix unittest-using tests. Correct usage of
`unittest.end(env)` is to return its value.
Result: //test:all now passes with Bazel 0.25.0rc3
and --incompatible_windows_native_test_wrapper
* Register Skylib toolchains
* rules_foreign_cc_dep registers unittest toolchains
* Address review comments
* Add bazel_skylib_workspace to WORKSPACE files
* Remove stale toolchain init code
- explicitly pass the values of these options to corresponding compilation/link flags lists; add them to the end of the lists of they are not already there
- please see the test in test/standard_cxx_flags_test
If the user passes empty string for some cache entry, for instance,
CMAKE_BUILD_TYPE, then the corresponding computed value
(computed from the Bazel's build type or Bazel C/C++ toolchain)
should not be used.
I.e., user passes "CMAKE_BUILD_TYPE": "", and there will be no
-DCMAKE_BUILD_TYPE in the cmake call.
* Extract shell fragments into a toolchain
Construct script in framework.bzl using special notation for calling
shell fragments, defining and referencing environment variables;
have the script converted from this special notation into a real script
(see README.md notes.)
The special notation is used to keep script construction in code still readable.
Tools scripts (cmake, ninja) were also converted.
* Fix reference to environment variables in examples
.. and reference it correctly $$var_name$$ so it is replaced further
* Review comments: documentation, explicitly mark functions from toolchain
- mark functions from shell toolchain as ##funname##, so that they
can not be mixed with usual shell functions
* Fix operating system name for windows in toolchain file
* Additional env vars for windows
* Correct cmake tool build
* Do not build ninja on Windows
* When run on Windows under msys, find utility from Window could "leak"...
into the script. Use heuristics to use /usr/bin/find if it exists.
Also, use pwd -W to get Windows-styled paths (for cmake)
* Extract cmake and ninja into a toolchain; provide defaults.
In the workspace-level rule registration function, default toolchain
implementations are registered for all platforms, which are calling
the cmake and ninja just by name, assuming they are preinstalled.
Also, the user can pass the custom toolchains in the initialization
function, they will be registered before the defaults.
* Do not run ninja build test for now without nested workspaces support
* Corrections after merge
* Always build ninja from sources for tests, correct initialization order
* Add example of using prebuilt artefact in the native tools toolchain.
* Review comments, have native_tool_toolchain#target, not label
+ improve documentation
* Correct ninja toolchain label
* Correct documentation in native_tools_toolchain.bzl
* Add crosstool example; does not work with cmake rule yet
the code is taken from Bazel test data (bazel_toolchain_test_data)
* Make crosstool compilation of cmake_external + cc_binary work
To build example, cd examples/cmake_crosstool bazel build //:libhello_test
Changes:
1) Initially suggested in #124: put $EXT_BUILD_ROOT on path, so that relative paths can be resolved by CMake
2) Toolchain tools are references as relative paths, and they themselves refer to external repository with external/ prefix.
This will not work with CMake, as CMake also perform compiler tests and the build is performed in some temp directory.
We need to convert to absolute paths.
I did a trick with checking of $EXT_BUILD_ROOT is defined and then using it as a prefix.
3) I had to change the visibility of the cc-compiler-k8 toolchain to public
4) For CMake crosstool file, CMAKE_C_COMPILER, CMAKE_CXX_COMPILER, CMAKE_AR need to be absolute, so in cases when they are relative and not under external directory, force paths conversion
* cmake toolchain files support
* extract cmake script consruction code into a separate file
for further testing
* simplify cmake script creation code
* first four tests for CMake script creation functions
* + move_dict_values_test for CMake script creation functions
* + reverse_descriptor_dict_test for CMake script creation functions
* + toolchain_and_user_values_test for CMake script creation functions
* add create_cmake_script_no_toolchain_file_test for CMake script creation
* do not insert executable linker rule option if it uses cxx compiler
since it would be the same as default
add one more test for command line
* add test for cmake script with toolchain file
* add test for cmake script with toolchain file with user values
* propagate information about target into CMake toolchain file
irengrig