gitlab-ci: restrict maximum number of link jobs on Windows

The hosted Windows runners on GitLab.com only have 7.5GB of RAM. Given
that "link.exe" provided by Microsoft Visual Studio is multi-threaded by
itself already and thus quite memory hungry this can quickly lead to
memory starvation, out-of-memory situations and thus failed CI jobs.

Fix the issue by limiting the number of concurrent linker jobs. The same
issue hasn't been observed on GitHub Actions yet, probably because it
got more than twice the amount of RAM with 16GB.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4976e18a0503298f38230f5ba7348675baf48664..7e1cecc6a702f906c056bf0ef91dfed66e5a02de 100644 (file)
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -169,7 +169,7 @@ build:msvc-meson:
   extends: .msvc-meson
   stage: build
   script:
-    - meson setup build -Dperl=disabled
+    - meson setup build -Dperl=disabled -Dbackend_max_links=1
     - meson compile -C build
   artifacts:
     paths: