Subject: [core-updates PATCH 00/19] Use CMake in build-system/cmake.

From: Greg Hogan <[email-masked]>
Date: Wed, 27 Mar 2024 14:49:03 +0000

Following up on this discussion from 2+ years ago:
  https://lists.gnu.org/archive/html/guix-devel/2021-10/msg00055.html

The current cmake-build-system defers to gnu-build-system to build and
check packages. This patch adapts the cmake-build-system to use CMake
commands. The benefits include:

1) Tests can run in parallel. Make (from the gnu-build-system) treats
ctest as a single target so cannot parallelize tests. By directly
running ctest the tests are run with optional parallelism.

2) Alternative generators, namely Ninja. When configured with an
alternative generator the CMake build, check, and install commands will
use that generator and the package need not replace each phase.

The simplification can be seen in the included patch for astroid. Ninja
must still be included (both the module and native input) and the
generator specified:

  (use-modules
   (gnu packages ninja))

  (arguments
   (list #:generator "Ninja"))

  (native-inputs (list ninja))

This compares with the current requirement to override flags and phases:

  (arguments
   (list
    #:configure-flags #~(list "-GNinja")
    #:phases
    #~(modify-phases %standard-phases
        (replace 'build
          (lambda _
            (invoke "ninja" "-j" (number->string (parallel-job-count)))))
        (replace 'check
          (lambda* (#:key tests? #:allow-other-keys)
            (when tests?
              (setenv "CTEST_OUTPUT_ON_FAILURE" "1")
              (invoke "ctest" "."))))
        (replace 'install
          (lambda _
            (invoke "ninja" "install"))))))

It would be nice to include the ninja module and ninja as a native input
by default when using the cmake-build-system, but I do not think this is
possible due to circular dependencies with Python and CMake, the two
supported build methods for Ninja.

Greg Hogan (19):
  build-system/cmake: Parallelize tests using ctest.
  build-system/cmake: Parameterize build system generator.
  build-system/cmake: Add build.
  build-system/cmake: Add install.
  gnu: libmedfile: Disable parallel tests.
  gnu: srt: Disable parallel tests.
  gnu: fish: Fix tests.
  gnu: vulkan-loader: Disable parallel tests.
  gnu: igraph: Move test target to check phase.
  gnu: inkscape: Move test target to check phase.
  gnu: vigra: Move test target to check phase.
  gnu: cpp-httplib: Disable parallel tests.
  gnu: libical: Disable parallel tests.
  gnu: astroid: Remove custom phases.
  gnu: websocketpp: Disable parallel tests.
  gnu: mbedtls-lts: Disable parallel tests.
  gnu: scotch: Disable parallel tests.
  gnu: evolution-data-server: Disable parallel tests.
  gnu: aws-c-common: Disable parallel tests.

 doc/guix.texi                     |  4 +++
 gnu/packages/c.scm                |  3 +-
 gnu/packages/calendar.scm         |  1 +
 gnu/packages/cpp.scm              |  3 +-
 gnu/packages/engineering.scm      |  3 +-
 gnu/packages/gnome.scm            |  1 +
 gnu/packages/graph.scm            |  5 +++-
 gnu/packages/image.scm            |  9 ++++--
 gnu/packages/inkscape.scm         |  8 ++++--
 gnu/packages/mail.scm             | 16 ++---------
 gnu/packages/maths.scm            |  3 +-
 gnu/packages/networking.scm       |  3 +-
 gnu/packages/shells.scm           |  5 ++++
 gnu/packages/tls.scm              |  3 +-
 gnu/packages/vulkan.scm           |  1 +
 gnu/packages/web.scm              |  3 +-
 guix/build-system/cmake.scm       |  4 +++
 guix/build/cmake-build-system.scm | 46 +++++++++++++++++++++++++------
 18 files changed, 85 insertions(+), 36 deletions(-)

base-commit: 656baadf83f2812c0ff79f4f2f0b5f1e927ed8a5
-- 
2.44.0