Use ExtUtils::PkgConfig to discover the CFLAGS and LDFLAGS for external libraries#210
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@marc-vanderwal, milestone? |
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I wasn’t sure about the milestone. It might be nice to have it in 2024.2, though. What do you think? |
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On FreeBSD: Installation instructions for build environment must be updated too. https://github.com/zonemaster/zonemaster/tree/develop/docs/internal/distrib-testing |
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If other documents are updated too it should be fine. |
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Yes, I’m preparing a PR for the installation instructions in zonemaster/zonemaster because we need one more package to be installed. I’ll set the milestone to 2024.2 then. |
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A pull request on zonemaster-ldns [1] now requires ExtUtils::PkgConfig. Update the documentation to that effect. [1]: zonemaster/zonemaster-ldns#210
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A pull request on zonemaster-ldns [1] now requires ExtUtils::PkgConfig. Update the documentation to that effect. [1]: zonemaster/zonemaster-ldns#210
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On platforms or systems where libraries might be installed somewhere else than the usual /usr/local/lib or /usr/lib, running perl Makefile.PL might fail to detect the location of the libraries. Fortunately, pkg-config can help us determine which appropriate CFLAGS and LDFLAGS to append to the compiler and linker command lines respectively, and ExtUtils::PkgConfig provides a simple wrapper around that command line utility. This unfortunately requires one more dependency, but that library is widely packaged across Linux distributions and FreeBSD. It’s packaged as follows: * on Alpine Linux: perl-extutils-pkgconfig; * on Debian-based OSes: libextutils-pkgconfig-perl; * on FreeBSD: p5-ExtUtils-PkgConfig; * on Red Hat-based OSes: perl-ExtUtils-PkgConfig.
Install ExtUtils::PkgConfig in the build container.
As a drive-by change, update the NSEC test in rr.t because the .se has started using ZONEMD.
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mattias-p
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Nov 14, 2024
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I tested this on Arch Linux and it seems to work.
matsduf
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Nov 15, 2024
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Nov 21, 2024
Pull request zonemaster/zonemaster-ldns#210 added an additional build-time dependency on ExtUtils::PkgConfig that wasn’t mirrored in the CI configuration for Zonemaster::Engine, therefore breaking CI. Adding the missing dependency should restore CI to normal working state.
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Nov 21, 2024
Pull request zonemaster/zonemaster-ldns#210 added an additional build-time dependency on ExtUtils::PkgConfig that wasn’t mirrored in the CI configuration for Zonemaster::Engine, therefore breaking CI. Adding the missing dependency should restore CI to normal working state.
marc-vanderwal
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Nov 21, 2024
Pull request zonemaster/zonemaster-ldns#210 added an additional build-time dependency on ExtUtils::PkgConfig that wasn’t mirrored in the CI configuration for Zonemaster::Engine, therefore breaking CI. Adding the missing dependency should restore CI to normal working state.
marc-vanderwal
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Nov 21, 2024
Pull request zonemaster/zonemaster-ldns#210 added an additional build-time dependency on ExtUtils::PkgConfig that wasn’t mirrored in the CI configuration for Zonemaster::Engine, therefore breaking CI. Adding the missing dependency should restore CI to normal working state.
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Nov 21, 2024
Pull request zonemaster#210 forgot to document the change in README.md. Let’s fix that before quickly before the next release.
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Purpose
This PR aims to make detection of CFLAGS and LDFLAGS more reliable and portable across *nix systems by calling out to
pkg-config. By doing so, libraries that have been installed by hand (in/usr/localor a private prefix such as$HOME/.local) or through alternative package managers are more likely to be successfully detected.Context
See #129.
Changes
How to test this PR
Run
perl Makefile.PL; it should still work.Building the Dockerfile should also still work.