Add the ability to modify the environment of the various steps running
as part of an external project build. This specifically adds the ability
to set them on the configure , build , install, and test steps, as well
as exposing the `ENVIRONMENT_MODIFICATION` keyword arguments to
`ExternalProject_Add_Step`, allowing customization of the environment of
custom steps.
The values of the environment variable respect the `LIST_SEPARATOR`.
Fixes: #26963
- Do not try to guess the flags to pass to "cmake -E tar" ("z" or not) based
on the extension. It is not necessary, as the archive type is autodetected
since we switched to libarchive.
- Add new tests for .tar.zst archives, which would fail without the change.
Fixes: #25062
Add an `INSTALL_JOB_SERVER_AWARE` option to `ExternalProject_Add`.
When using an explicit `INSTALL_COMMAND`, the generated commands
won't use `$(MAKE)` thus failing to connect to the outer make's
job server. Add an option enable explicit job server integration.
This is the install step's equivalent to the build step's
`BUILD_JOB_SERVER_AWARE` option added by commit bc43398e72
(ExternalProject: Enable Make Job Server with Explicit Build Command,
2023-08-09, v3.28.0-rc1~217^2). It is useful when the external
project's installation is driven by its build system. Note that with
Makefile generators, our default install command does use `$(MAKE)` to
connect to the outer make's job server.
Issue: #26398
The can_fetch_default variable needs to be set before the call to
_ep_write_gitupdate_script(). Move it to before that call and always
set the variable, even if arg_SCRIPT_FILE is not set. This makes the
generated git update script file easier to follow if someone tries to
follow what it is doing or wants to investigate problems and run it
manually.
Fixes: #26164
In 462e583267 (ExternalProject: Switch download, update and patch to
use _EP_ vars, 2024-05-13), the svn_username and svn_password variables
were only updated appropriately in the svn download implementation, but
not in the svn update implementation. This was easily missed in part
because the old implementation was relying on behavior that differed
from the documentation for get_property(), and the new implementation
tried to keep the intermediate variables from the old implementation but
missed this subtle aspect.
Issue: #26152Fixes: #26148
The commands moved to shared_internal_commands.cmake
will soon be used directly by FetchContent, which cannot
always include the full ExternalProject.cmake file (e.g. it may
be used in CMake script mode).
Issue: #21703
Teach `ExternalProject_Add` and `FetchContent_Declare` to resolve
relative remote URLs provided via `GIT_REPOSITORY`. Add policy
CMP0150 to maintain compatibility.
Fixes: #24211
Co-Authored-By: Craig Scott <craig.scott@crascit.com>
