Meson: fix meson_lib missing deps, meson_exe layout & install verbosity by perseoGI · Pull Request #19918 · conan-io/conan

perseoGI · 2026-04-28T08:41:40Z

Changelog: Fix: Fix meson_lib missing deps, meson_exe layout & install verbosity.
Docs: omit

memsharded

Looks good, maybe at least some integration test that checks the new {{as_name(require)}} = dependency('{{as_name(require)}}', required: true) logic?

Because the layout() would be at least tested not to break by functional tests

memsharded · 2026-04-28T08:56:13Z


    def layout(self):
-        self.folders.build = "build"
+        basic_layout(self)


This changes the folder to be build-debug and build-release, is it intended?

Yes! Without a basic_layout, all generators and meson cache/files were being created in the root, constantly dirtying it

perseoGI · 2026-04-28T09:00:12Z

maybe at least some integration test that checks the new {{as_name(require)}} = dependency('{{as_name(require)}}', required: true) logic?

Okay, I can do it, but it is just a copy from meson_exe

memsharded · 2026-04-28T09:02:42Z

Okay, I can do it, but it is just a copy from meson_exe

No, better do not add new functional tests for this, I was thinking of a fast integration one, because I thought there were already some integration tests for this, but there isn't, so probably not worth it.

perseoGI · 2026-04-28T09:06:43Z

Yes, that is what I was wondering. I did not see any test which were testing a meson_lib/meson_exe using -d requires.
There is one that calls to meson_lib -d requires... but it overwrites the meson.build file.

perseoGI · 2026-04-28T12:12:39Z

$ conan new meson_lib -d name="liba" -d version=1.0 -o liba

File saved: conanfile.py
File saved: meson.build
File saved: src/liba.cpp
File saved: src/liba.h
File saved: test_package/conanfile.py
File saved: test_package/meson.build
File saved: test_package/src/example.cpp

$ conan new meson_lib -d name="libb" -d version=1.0 -d requires=liba/1.0 -o libb

File saved: conanfile.py
File saved: meson.build
File saved: src/libb.cpp
File saved: src/libb.h
File saved: test_package/conanfile.py
File saved: test_package/meson.build
File saved: test_package/src/example.cpp

$ conan new meson_exe -d name="consumer" -d version=1.0 -d requires="libb/1.0" -o consumer

File saved: conanfile.py
File saved: meson.build
File saved: src/consumer.cpp
File saved: src/consumer.h
File saved: src/main.cpp
File saved: test_package/conanfile.py

$ conan export liba

======== Exporting recipe to the cache ========
liba/1.0: [HOOK - hook_check_license.py] pre_export(): ERROR: Recipe does not define its 'license'
liba/1.0: Exporting package recipe: /private/tmp/test-meson/liba/conanfile.py
liba/1.0: Copied 1 '.py' file: conanfile.py
liba/1.0: Copied 1 '.build' file: meson.build
liba/1.0: Copied 1 '.cpp' file: liba.cpp
liba/1.0: Copied 1 '.h' file: liba.h
liba/1.0: Exported to cache folder: /Users/perseo/.conan2/p/liba205c217cdf534/e
liba/1.0: Exported: liba/1.0#e2502cc21bb608f19b26cbef4b3e5569 (2026-04-28 12:05:51 UTC)

$ conan export libb

======== Exporting recipe to the cache ========
libb/1.0: [HOOK - hook_check_license.py] pre_export(): ERROR: Recipe does not define its 'license'
libb/1.0: Exporting package recipe: /private/tmp/test-meson/libb/conanfile.py
libb/1.0: Copied 1 '.py' file: conanfile.py
libb/1.0: Copied 1 '.build' file: meson.build
libb/1.0: Copied 1 '.h' file: libb.h
libb/1.0: Copied 1 '.cpp' file: libb.cpp
libb/1.0: Exported to cache folder: /Users/perseo/.conan2/p/libb7130bba477819/e
libb/1.0: Exported: libb/1.0#6dc6006c19f32ba4b9a46354981ab826 (2026-04-28 12:05:53 UTC)

$  conan build consumer -b missing`

======== Input profiles ========
Profile host:
[settings]
arch=armv8
build_type=Release
compiler=apple-clang
compiler.cppstd=gnu17
compiler.libcxx=libc++
compiler.version=17
os=Macos
[conf]
tools.cmake.cmaketoolchain:generator=Ninja
tools.files.download:verify=False
tools.system.package_manager:mode=install
tools.system.package_manager:sudo=true

Profile build:
[settings]
arch=armv8
build_type=Release
compiler=apple-clang
compiler.cppstd=gnu17
compiler.libcxx=libc++
compiler.version=17
os=Macos
[conf]
tools.cmake.cmaketoolchain:generator=Ninja
tools.files.download:verify=False
tools.system.package_manager:mode=install
tools.system.package_manager:sudo=true


======== Computing dependency graph ========
Graph root
    conanfile.py (consumer/1.0): /private/tmp/test-meson/consumer/conanfile.py
Requirements
    liba/1.0#378a4c049721861c90ce396e89623174 - Cache
    libb/1.0#d98b62b7193fb300cf39d4f345d4ef5f - Cache

======== Computing necessary packages ========
...

A new experimental approach for binary compatibility detection is available.
    Enable it by setting the core.graph:compatibility_mode=optimized conf
    and get improved performance when querying multiple compatible binaries in remotes.

Requirements
    liba/1.0#378a4c049721861c90ce396e89623174:461f120128f0af7aba967bf3e9e4aaa5892a82b3 - Build
    libb/1.0#d98b62b7193fb300cf39d4f345d4ef5f:7e3b7daf201fd6ce2f56a667116263e5e8cad43d - Build

======== Installing packages ========

-------- Installing package liba/1.0 (1 of 2) --------
liba/1.0: Building from source
liba/1.0: Package liba/1.0:461f120128f0af7aba967bf3e9e4aaa5892a82b3
liba/1.0: settings: os=Macos arch=armv8 compiler=apple-clang compiler.cppstd=gnu17 compiler.libcxx=libc++ compiler.version=17 build_type=Release
liba/1.0: options: fPIC=True shared=False
liba/1.0: Copying sources to build folder
liba/1.0: Building your package in /Users/perseo/.conan2/p/b/liba0dbe843d46819/b
liba/1.0: Calling generate()
liba/1.0: Generators folder: /Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release/conan
liba/1.0: MesonToolchain generated: conan_meson_native.ini
liba/1.0: Generating aggregated env files
liba/1.0: Generated aggregated env files: ['conanbuild.sh', 'conanrun.sh']
liba/1.0: Calling build()
liba/1.0: Meson configure cmd: meson setup --native-file "/Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release/conan/conan_meson_native.ini" "/Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release" "/Users/perseo/.conan2/p/b/liba0dbe843d46819/b" --prefix=/
liba/1.0: RUN: meson setup --native-file "/Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release/conan/conan_meson_native.ini" "/Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release" "/Users/perseo/.conan2/p/b/liba0dbe843d46819/b" --prefix=/
The Meson build system
Version: 1.10.1
Source dir: /Users/perseo/.conan2/p/b/liba0dbe843d46819/b
Build dir: /Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release
Build type: native build
Project name: liba
Project version: undefined
C++ compiler for the host machine: clang++ (clang 17.0.0 "Apple clang version 17.0.0 (clang-1700.6.4.2)")
C++ linker for the host machine: clang++ ld64 1230.1
Host machine cpu family: aarch64
Host machine cpu: aarch64
Build targets in project: 1

liba  undefined

  User defined options
    Native files: /Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release/conan/conan_meson_native.ini
    prefix      : /

Found ninja-1.13.2 at /opt/homebrew/bin/ninja

liba/1.0: Meson build cmd: meson compile -C "/Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release" -j14
liba/1.0: RUN: meson compile -C "/Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release" -j14
INFO: autodetecting backend as ninja
INFO: calculating backend command to run: /opt/homebrew/bin/ninja -j 14
[2/2] Linking static target libliba.a

liba/1.0: Package '461f120128f0af7aba967bf3e9e4aaa5892a82b3' built
liba/1.0: Build folder /Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release
liba/1.0: Generating the package
liba/1.0: Packaging in folder /Users/perseo/.conan2/p/b/liba0dbe843d46819/p
liba/1.0: Calling package()
liba/1.0: RUN: meson install -C "/Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release" --destdir "/Users/perseo/.conan2/p/b/liba0dbe843d46819/p"
ninja: Entering directory `/Users/perseo/.conan2/p/b/liba0dbe843d46819/b/build-release'
ninja: no work to do.
Installing libliba.a to /Users/perseo/.conan2/p/b/liba0dbe843d46819/p/lib
Installing /Users/perseo/.conan2/p/b/liba0dbe843d46819/b/src/liba.h to /Users/perseo/.conan2/p/b/liba0dbe843d46819/p/include

liba/1.0: [HOOK - hook_macos_check_sdk.py] post_package(): WARN: File lib/libliba.a does not have the expected macOS min OS, expected 13.0 but found 26.0
liba/1.0: [HOOK - hook_macos_check_sdk.py] post_package(): WARN: File lib/libliba.a does not have the expected macOS base SDK, expected 26.0 but found 26.2
liba/1.0: [HOOK - hook_ms_runtime_files.py] post_package(): Skipping liba from checking MS files: Not msvc.
liba/1.0: [HOOK - hook_package_license.py] post_package(): WARN: No 'licenses' folder found in package folder
liba/1.0: package(): Packaged 1 '.h' file: liba.h
liba/1.0: package(): Packaged 1 '.a' file: libliba.a
liba/1.0: Created package revision 682ff772355c45a939add0c9c7f5d5e8
liba/1.0: Package '461f120128f0af7aba967bf3e9e4aaa5892a82b3' created
liba/1.0: Full package reference: liba/1.0#378a4c049721861c90ce396e89623174:461f120128f0af7aba967bf3e9e4aaa5892a82b3#682ff772355c45a939add0c9c7f5d5e8
liba/1.0: Package folder /Users/perseo/.conan2/p/b/liba0dbe843d46819/p

-------- Installing package libb/1.0 (2 of 2) --------
libb/1.0: Building from source
libb/1.0: Package libb/1.0:7e3b7daf201fd6ce2f56a667116263e5e8cad43d
libb/1.0: settings: os=Macos arch=armv8 compiler=apple-clang compiler.cppstd=gnu17 compiler.libcxx=libc++ compiler.version=17 build_type=Release
libb/1.0: options: fPIC=True shared=False
libb/1.0: requires: liba/1.0.Z
libb/1.0: Copying sources to build folder
libb/1.0: Building your package in /Users/perseo/.conan2/p/b/libb41757fef5b4f3/b
libb/1.0: Calling generate()
libb/1.0: Generators folder: /Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release/conan
libb/1.0: MesonToolchain generated: conan_meson_native.ini
libb/1.0: Generating aggregated env files
libb/1.0: Generated aggregated env files: ['conanbuild.sh', 'conanrun.sh']
libb/1.0: Calling build()
libb/1.0: Meson configure cmd: meson setup --native-file "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release/conan/conan_meson_native.ini" "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release" "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b" --prefix=/
libb/1.0: RUN: meson setup --native-file "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release/conan/conan_meson_native.ini" "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release" "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b" --prefix=/
The Meson build system
Version: 1.10.1
Source dir: /Users/perseo/.conan2/p/b/libb41757fef5b4f3/b
Build dir: /Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release
Build type: native build
Project name: libb
Project version: undefined
C++ compiler for the host machine: clang++ (clang 17.0.0 "Apple clang version 17.0.0 (clang-1700.6.4.2)")
C++ linker for the host machine: clang++ ld64 1230.1
Host machine cpu family: aarch64
Host machine cpu: aarch64
Found pkg-config: YES (/opt/homebrew/bin/pkg-config) 2.5.1
Run-time dependency liba found: YES 1.0
Build targets in project: 1

libb  undefined

  User defined options
    Native files: /Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release/conan/conan_meson_native.ini
    prefix      : /

Found ninja-1.13.2 at /opt/homebrew/bin/ninja

libb/1.0: Meson build cmd: meson compile -C "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release" -j14
libb/1.0: RUN: meson compile -C "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release" -j14
INFO: autodetecting backend as ninja
INFO: calculating backend command to run: /opt/homebrew/bin/ninja -j 14
[2/2] Linking static target liblibb.a

libb/1.0: Package '7e3b7daf201fd6ce2f56a667116263e5e8cad43d' built
libb/1.0: Build folder /Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release
libb/1.0: Generating the package
libb/1.0: Packaging in folder /Users/perseo/.conan2/p/b/libb41757fef5b4f3/p
libb/1.0: Calling package()
libb/1.0: RUN: meson install -C "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release" --destdir "/Users/perseo/.conan2/p/b/libb41757fef5b4f3/p"
ninja: Entering directory `/Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/build-release'
ninja: no work to do.
Installing liblibb.a to /Users/perseo/.conan2/p/b/libb41757fef5b4f3/p/lib
Installing /Users/perseo/.conan2/p/b/libb41757fef5b4f3/b/src/libb.h to /Users/perseo/.conan2/p/b/libb41757fef5b4f3/p/include

libb/1.0: [HOOK - hook_macos_check_sdk.py] post_package(): WARN: File lib/liblibb.a does not have the expected macOS min OS, expected 13.0 but found 26.0
libb/1.0: [HOOK - hook_macos_check_sdk.py] post_package(): WARN: File lib/liblibb.a does not have the expected macOS base SDK, expected 26.0 but found 26.2
libb/1.0: [HOOK - hook_ms_runtime_files.py] post_package(): Skipping libb from checking MS files: Not msvc.
libb/1.0: [HOOK - hook_package_license.py] post_package(): WARN: No 'licenses' folder found in package folder
libb/1.0: package(): Packaged 1 '.h' file: libb.h
libb/1.0: package(): Packaged 1 '.a' file: liblibb.a
libb/1.0: Created package revision da8a3c70e7017f7c4ea80ffad220b4f3
libb/1.0: Package '7e3b7daf201fd6ce2f56a667116263e5e8cad43d' created
libb/1.0: Full package reference: libb/1.0#d98b62b7193fb300cf39d4f345d4ef5f:7e3b7daf201fd6ce2f56a667116263e5e8cad43d#da8a3c70e7017f7c4ea80ffad220b4f3
libb/1.0: Package folder /Users/perseo/.conan2/p/b/libb41757fef5b4f3/p

======== Finalizing install (deploy, generators) ========
conanfile.py (consumer/1.0): Calling generate()
conanfile.py (consumer/1.0): Generators folder: /private/tmp/test-meson/consumer/build-release/conan
conanfile.py (consumer/1.0): MesonToolchain generated: conan_meson_native.ini
conanfile.py (consumer/1.0): Generating aggregated env files
conanfile.py (consumer/1.0): Generated aggregated env files: ['conanbuild.sh', 'conanrun.sh']

======== Calling build() ========
conanfile.py (consumer/1.0): Calling build()
conanfile.py (consumer/1.0): Meson configure cmd: meson setup --native-file "/private/tmp/test-meson/consumer/build-release/conan/conan_meson_native.ini" "/private/tmp/test-meson/consumer/build-release" "/private/tmp/test-meson/consumer" --prefix=/
conanfile.py (consumer/1.0): RUN: meson setup --native-file "/private/tmp/test-meson/consumer/build-release/conan/conan_meson_native.ini" "/private/tmp/test-meson/consumer/build-release" "/private/tmp/test-meson/consumer" --prefix=/
The Meson build system
Version: 1.10.1
Source dir: /private/tmp/test-meson/consumer
Build dir: /private/tmp/test-meson/consumer/build-release
Build type: native build
Project name: consumer
Project version: undefined
C++ compiler for the host machine: clang++ (clang 17.0.0 "Apple clang version 17.0.0 (clang-1700.6.4.2)")
C++ linker for the host machine: clang++ ld64 1230.1
Host machine cpu family: aarch64
Host machine cpu: aarch64
Found pkg-config: YES (/opt/homebrew/bin/pkg-config) 2.5.1
Run-time dependency libb found: YES 1.0
Build targets in project: 1

consumer  undefined

  User defined options
    Native files: /private/tmp/test-meson/consumer/build-release/conan/conan_meson_native.ini
    prefix      : /

Found ninja-1.13.2 at /opt/homebrew/bin/ninja

conanfile.py (consumer/1.0): Meson build cmd: meson compile -C "/private/tmp/test-meson/consumer/build-release" -j14
conanfile.py (consumer/1.0): RUN: meson compile -C "/private/tmp/test-meson/consumer/build-release" -j14
INFO: autodetecting backend as ninja
INFO: calculating backend command to run: /opt/homebrew/bin/ninja -j 14
[3/3] Linking target consumer

./consumer/build-release/consumer
liba/1.0: Hello World Release!
  liba/1.0: __aarch64__ defined
  liba/1.0: __cplusplus201703
  liba/1.0: __GNUC__4
  liba/1.0: __GNUC_MINOR__2
  liba/1.0: __clang_major__17
  liba/1.0: __apple_build_version__17000604
libb/1.0: Hello World Release!
  libb/1.0: __aarch64__ defined
  libb/1.0: __cplusplus201703
  libb/1.0: __GNUC__4
  libb/1.0: __GNUC_MINOR__2
  libb/1.0: __clang_major__17
  libb/1.0: __apple_build_version__17000604
consumer/1.0: Hello World Release!
  consumer/1.0: __aarch64__ defined
  consumer/1.0: __cplusplus201703
  consumer/1.0: __GNUC__4
  consumer/1.0: __GNUC_MINOR__2
  consumer/1.0: __clang_major__17
  consumer/1.0: __apple_build_version__17000604
consumer/1.0 test_package

Meson: fix cmake_lib missing deps, cmake_exe layout & install verbosity

92c416d

perseoGI changed the title ~~Meson: fix cmake_lib missing deps, cmake_exe layout & install verbosity~~ Meson: fix meson_lib missing deps, meson_exe layout & install verbosity Apr 28, 2026

memsharded reviewed Apr 28, 2026

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memsharded assigned franramirez688 Apr 28, 2026

memsharded approved these changes Apr 28, 2026

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franramirez688 reviewed Apr 28, 2026

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Comment thread conan/internal/api/new/meson_lib.py

Add test for template requires

315136d

Removed functional test

b8bc0c2

franramirez688 approved these changes Apr 28, 2026

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franramirez688 merged commit c5d447f into conan-io:develop2 Apr 28, 2026
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czoido added this to the 2.29.0 milestone Apr 28, 2026

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Meson: fix meson_lib missing deps, meson_exe layout & install verbosity#19918

Meson: fix meson_lib missing deps, meson_exe layout & install verbosity#19918
franramirez688 merged 3 commits into
conan-io:develop2from
perseoGI:pgi/meson/tweaks

perseoGI commented Apr 28, 2026 •

edited by czoido

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perseoGI commented Apr 28, 2026 •

edited by czoido

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