Add -isystem to make / pkgconfig flags#1470
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cerisier merged 1 commit intobazel-contrib:mainfrom Mar 9, 2026
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Previously this logic special cased `--sysroot` as an arugment that had to be passed with the compiler because some configure scripts didn't add CFLAGS to the configure steps. This same logic needs to apply to any `-isystem` flags set by the toolchain for the same reason. Headers that the toolchain requires with `-isystem` (without any deps) can contain things needed for configure scripts to produce valid results. For example they can contain glibc + sys/types.h etc, which is used by make's build scripts to determine if it needs to typedef any standard types.
cerisier
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Mar 6, 2026
rdesgroppes
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Switch rules_foreign_cc from single_version_override on 0.15.1 to a git_override on main (e4068330) to pick up three upstream fixes: - bazel-contrib/rules_foreign_cc#1451: out_data_dirs in output groups (our patch 0001 verbatim — drop it) - bazel-contrib/rules_foreign_cc#1465: resource_set integration, which lets Bazel's scheduler respect CPU/RAM budgets and avoids build action overcommitting - bazel-contrib/rules_foreign_cc#1470: forward -isystem flags to configure scripts Patch 0002 (LD_LIBRARY_PATH propagation) is kept locally as bazel-contrib/rules_foreign_cc#1452 is still open. bazel-contrib/rules_foreign_cc#1462 bumps bazel_lib to 3.2.0; follow up to 3.2.2 to get path-mapping compatibility with Bazel 9.
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### What does this PR do? Switch `rules_foreign_cc` from `single_version_override` on 0.15.1 to a `git_override` on `main`. Implies to bump `bazel_lib` to 3.2+ (see bazel-contrib/rules_foreign_cc#1462). ### Motivation Pick up three upstream fixes: 1. bazel-contrib/rules_foreign_cc#1451 (allows to **drop our corresponding patch**), 2. bazel-contrib/rules_foreign_cc#1465 (avoids build action **over-committing**), 3. bazel-contrib/rules_foreign_cc#1470. ### Additional Notes Patch 0002 (LD_LIBRARY_PATH propagation) is kept locally as bazel-contrib/rules_foreign_cc#1452 is still open. Co-authored-by: regis.desgroppes <regis.desgroppes@datadoghq.com>
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Previously this logic special cased
--sysrootas an arugment that hadto be passed with the compiler because some configure scripts didn't add
CFLAGS to the configure steps. This same logic needs to apply to any
-isystemflags set by the toolchain for the same reason. Headers thatthe toolchain requires with
-isystem(without any deps) can containthings needed for configure scripts to produce valid results. For
example they can contain glibc + sys/types.h etc, which is used by
make's build scripts to determine if it needs to typedef any standard
types.