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move __STDC_WANT_LIB_EXT1__ macro to CMakeLists.txt.#555

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fujitatomoya wants to merge 1 commit intorollingfrom
fujitatomoya/issues/552
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move __STDC_WANT_LIB_EXT1__ macro to CMakeLists.txt.#555
fujitatomoya wants to merge 1 commit intorollingfrom
fujitatomoya/issues/552

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Description

Fixes #552

Is this user-facing behavior change?

No

Did you use Generative AI?

No

Additional Information

Signed-off-by: Tomoya Fujita <tomoya.fujita825@gmail.com>
@fujitatomoya fujitatomoya requested a review from ahcorde April 21, 2026 06:21
@fujitatomoya fujitatomoya self-assigned this Apr 21, 2026
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i think that we should backport this fix to the all downstream distros, expecting some conflicts for doing that since the base code is bit different.

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Pulls: #555
Gist: https://gist.githubusercontent.com/fujitatomoya/4cd99017dd1da292a1937755c45e345a/raw/979e3ab2e6d7170adc910e6c791055de47ddd41e/ros2.repos
BUILD args: --packages-above-and-dependencies rcutils
TEST args: --packages-above rcutils
ROS Distro: rolling
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/19031

  • Linux Build Status
  • Linux-aarch64 Build Status
  • Linux-rhel Build Status
  • Windows Build Status

@fujitatomoya
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i am almost sure that CI warnings are unrelated to this PR.

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  • Linux-rhel Build Status
  • Windows Build Status

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__STDC_WANT_LIB_EXT1__ defined after standard library headers are included, causes build failure

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