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[Bug]: Can't find pybind11 headers when building from source #29741

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[Bug]: Can't find pybind11 headers when building from source#29741
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BuildOS: Apple
@dstansby

Description

@dstansby
dstansby
opened on Mar 12, 2025

Bug summary

On macOS I am failing to build Matplotlib from source, because the c++ compiler cannot find Pybind11 headers. I've followed instructions at https://matplotlib.org/devdocs/devel/development_setup.html, and I get the same issue in a virtual environment, a virtual environment managed with uv, and a conda environment.

I have pybind11 installed globally (using brew), and in the Python virtual environment:

% python -c "import pybind11; print(pybind11.__version__)"
2.13.6

Code for reproduction

python -m pip install --verbose --no-build-isolation --editable ".[dev]"

Actual outcome

% uv pip install --verbose --no-build-isolation --editable ".[dev]"

DEBUG uv 0.6.5 (Homebrew 2025-03-06)
DEBUG Searching for default Python interpreter in virtual environments
DEBUG Found `cpython-3.12.8-macos-aarch64-none` at `/Users/dstansby/software/matplotlib/.venv/bin/python3` (active virtual environment)
DEBUG Using Python 3.12.8 environment at: .venv
DEBUG Acquired lock for `.venv`
DEBUG At least one requirement is not satisfied: file:///Users/dstansby/software/matplotlib
DEBUG Using request timeout of 30s
DEBUG Found PEP 621 metadata for /Users/dstansby/software/matplotlib in `pyproject.toml` (matplotlib)
DEBUG No static `pyproject.toml` available for: matplotlib @ file:///Users/dstansby/software/matplotlib (DynamicField("version"))
DEBUG Acquired lock for `/Users/dstansby/.cache/uv/sdists-v8/editable/a93b495625504936`
DEBUG Preparing metadata for: matplotlib @ file:///Users/dstansby/software/matplotlib
DEBUG No workspace root found, using project root
DEBUG Proceeding without build isolation
DEBUG Calling `mesonpy.prepare_metadata_for_build_editable()`
   Building matplotlib @ file:///Users/dstansby/software/matplotlib
DEBUG Building: matplotlib @ file:///Users/dstansby/software/matplotlib
DEBUG No workspace root found, using project root
DEBUG Proceeding without build isolation
DEBUG Calling `mesonpy.build_editable("/Users/dstansby/.cache/uv/builds-v0/.tmppFdYgl", {}, None)`
DEBUG + meson setup --reconfigure /Users/dstansby/software/matplotlib /Users/dstansby/software/matplotlib/build/cp312 -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md --native-file=/Users/dstansby/software/matplotlib/build/cp312/meson-python-native-file.ini
DEBUG Cleaning... 0 files.
DEBUG The Meson build system
DEBUG Version: 1.7.0
DEBUG Source dir: /Users/dstansby/software/matplotlib
DEBUG Build dir: /Users/dstansby/software/matplotlib/build/cp312
DEBUG Build type: native build
DEBUG Program python3 found: YES (/Users/dstansby/software/matplotlib/.venv/bin/python3)
DEBUG Project name: matplotlib
DEBUG Project version: 3.11.0.dev547+gb0153b17b6
DEBUG C compiler for the host machine: cc (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")
DEBUG C linker for the host machine: cc ld64 1115.7.3
DEBUG C++ compiler for the host machine: c++ (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")
DEBUG C++ linker for the host machine: c++ ld64 1115.7.3
DEBUG Host machine cpu family: aarch64
DEBUG Host machine cpu: aarch64
DEBUG Program python found: YES (/Users/dstansby/software/matplotlib/.venv/bin/python3)
DEBUG Dependency pybind11 found: YES 2.13.6 (cached)
DEBUG 
DEBUG Executing subproject freetype-2.6.1 
DEBUG 
DEBUG freetype-2.6.1| Project name: freetype2
DEBUG freetype-2.6.1| Project version: 2.6.1
DEBUG freetype-2.6.1| C compiler for the host machine: cc (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")
DEBUG freetype-2.6.1| C linker for the host machine: cc ld64 1115.7.3
DEBUG freetype-2.6.1| Has header "unistd.h" : YES (cached)
DEBUG freetype-2.6.1| Has header "fcntl.h" : YES (cached)
DEBUG freetype-2.6.1| Has header "stdint.h" : YES (cached)
DEBUG freetype-2.6.1| Configuring ftconfig.h using configuration
DEBUG freetype-2.6.1| Configuring ftoption.h using configuration
DEBUG freetype-2.6.1| Build targets in project: 2
DEBUG freetype-2.6.1| Subproject freetype-2.6.1 finished.
DEBUG 
DEBUG 
DEBUG Executing subproject qhull 
DEBUG 
DEBUG qhull| Project name: qhull
DEBUG qhull| Project version: 8.0.2
DEBUG qhull| C compiler for the host machine: cc (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")
DEBUG qhull| C linker for the host machine: cc ld64 1115.7.3
DEBUG qhull| Build targets in project: 3
DEBUG qhull| Subproject qhull finished.
DEBUG 
DEBUG Dependency dl found: YES unknown (cached)
DEBUG Objective-C compiler for the host machine: clang (clang 16.0.0)
DEBUG Objective-C linker for the host machine: clang ld64 1115.7.3
DEBUG Dependency appleframeworks (modules: Cocoa) found: YES unknown (cached)
DEBUG Configuring _version.py using configuration
DEBUG Program /Users/dstansby/software/matplotlib/tools/generate_matplotlibrc.py found: YES (/Users/dstansby/software/matplotlib/tools/generate_matplotlibrc.py)
DEBUG Build targets in project: 13
DEBUG 
DEBUG matplotlib 3.11.0.dev547+gb0153b17b6
DEBUG 
DEBUG   Subprojects
DEBUG     freetype-2.6.1: YES
DEBUG     qhull         : YES
DEBUG 
DEBUG   User defined options
DEBUG     Native files  : /Users/dstansby/software/matplotlib/build/cp312/meson-python-native-file.ini
DEBUG     b_ndebug      : if-release
DEBUG     b_vscrt       : md
DEBUG     buildtype     : release
DEBUG 
DEBUG Found ninja-1.11.1.git.kitware.jobserver-1 at /Users/dstansby/software/matplotlib/.venv/bin/ninja
DEBUG + /Users/dstansby/software/matplotlib/.venv/bin/ninja
DEBUG [1/23] Compiling C++ object src/_image.cpython-312-darwin.so.p/py_converters.cpp.o
DEBUG FAILED: src/_image.cpython-312-darwin.so.p/py_converters.cpp.o 
DEBUG c++ -Isrc/_image.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_image.cpython-312-darwin.so.p/py_converters.cpp.o -MF src/_image.cpython-312-darwin.so.p/py_converters.cpp.o.d -o src/_image.cpython-312-darwin.so.p/py_converters.cpp.o -c ../../src/py_converters.cpp
DEBUG In file included from ../../src/py_converters.cpp:1:
DEBUG ../../src/py_converters.h:12:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG    12 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG [2/23] Compiling C++ object src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o
DEBUG FAILED: src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o 
DEBUG c++ -Isrc/_c_internal_utils.cpython-312-darwin.so.p -Isrc -I../../src -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o -MF src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o.d -o src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o -c ../../src/_c_internal_utils.cpp
DEBUG ../../src/_c_internal_utils.cpp:19:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG    19 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG [3/23] Compiling C++ object src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o
DEBUG FAILED: src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o 
DEBUG c++ -Isrc/_image.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o -MF src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o.d -o src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o -c ../../src/_image_wrapper.cpp
DEBUG ../../src/_image_wrapper.cpp:1:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG     1 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG [4/23] Compiling C++ object src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o
DEBUG FAILED: src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o 
DEBUG c++ -Isrc/_tkagg.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o -MF src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o.d -o src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o -c ../../src/_tkagg.cpp
DEBUG ../../src/_tkagg.cpp:32:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG    32 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG [5/23] Compiling C++ object src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o
DEBUG FAILED: src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o 
DEBUG c++ -Isrc/_qhull.cpython-312-darwin.so.p -Isrc -I../../src -I../../subprojects/qhull-8.0.2/src -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -DMPL_DEVNULL=/dev/null -MD -MQ src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o -MF src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o.d -o src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o -c ../../src/_qhull_wrapper.cpp
DEBUG ../../src/_qhull_wrapper.cpp:8:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG     8 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG [6/23] Compiling C++ object src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o
DEBUG FAILED: src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o 
DEBUG c++ -Isrc/ft2font.cpython-312-darwin.so.p -Isrc -I../../src -I../../subprojects/freetype-2.6.1/include -I../../extern/agg24-svn/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 '-DFREETYPE_BUILD_TYPE="local"' -MD -MQ src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o -MF src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o.d -o src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o -c ../../src/ft2font_wrapper.cpp
DEBUG ../../src/ft2font_wrapper.cpp:2:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG     2 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG [7/23] Compiling C++ object src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o
DEBUG FAILED: src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o 
DEBUG c++ -Isrc/_path.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o -MF src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o.d -o src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o -c ../../src/_path_wrapper.cpp
DEBUG ../../src/_path_wrapper.cpp:1:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG     1 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG [8/23] Compiling C++ object src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o
DEBUG FAILED: src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o 
DEBUG c++ -Isrc/_backend_agg.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include -I../../subprojects/freetype-2.6.1/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o -MF src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o.d -o src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o -c ../../src/_backend_agg_wrapper.cpp
DEBUG ../../src/_backend_agg_wrapper.cpp:1:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG     1 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG [9/23] Compiling C++ object src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o
DEBUG FAILED: src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o 
DEBUG c++ -Isrc/_backend_agg.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include -I../../subprojects/freetype-2.6.1/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o -MF src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o.d -o src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o -c ../../src/_backend_agg.cpp
DEBUG In file included from ../../src/_backend_agg.cpp:6:
DEBUG ../../src/_backend_agg.h:9:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG     9 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG [10/23] Compiling C++ object src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o
DEBUG FAILED: src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o 
DEBUG c++ -Isrc/ft2font.cpython-312-darwin.so.p -Isrc -I../../src -I../../subprojects/freetype-2.6.1/include -I../../extern/agg24-svn/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12 -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 '-DFREETYPE_BUILD_TYPE="local"' -MD -MQ src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o -MF src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o.d -o src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o -c ../../src/ft2font.cpp
DEBUG In file included from ../../src/ft2font.cpp:13:
DEBUG ../../src/mplutils.h:54:10: fatal error: 'pybind11/pybind11.h' file not found
DEBUG    54 | #include <pybind11/pybind11.h>
DEBUG       |          ^~~~~~~~~~~~~~~~~~~~~
DEBUG 1 error generated.
DEBUG ninja: build stopped: subcommand failed.
DEBUG Released lock at `/Users/dstansby/.cache/uv/sdists-v8/editable/a93b495625504936/.lock`
  × Failed to build `matplotlib @ file:///Users/dstansby/software/matplotlib`
  ├─▶ The build backend returned an error
  ╰─▶ Call to `mesonpy.build_editable` failed (exit status: 1)

      [stdout]
      + meson setup --reconfigure /Users/dstansby/software/matplotlib /Users/dstansby/software/matplotlib/build/cp312 -Dbuildtype=release -Db_ndebug=if-release -Db_vscrt=md
      --native-file=/Users/dstansby/software/matplotlib/build/cp312/meson-python-native-file.ini
      Cleaning... 0 files.
      The Meson build system
      Version: 1.7.0
      Source dir: /Users/dstansby/software/matplotlib
      Build dir: /Users/dstansby/software/matplotlib/build/cp312
      Build type: native build
      Program python3 found: YES (/Users/dstansby/software/matplotlib/.venv/bin/python3)
      Project name: matplotlib
      Project version: 3.11.0.dev547+gb0153b17b6
      C compiler for the host machine: cc (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")
      C linker for the host machine: cc ld64 1115.7.3
      C++ compiler for the host machine: c++ (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")
      C++ linker for the host machine: c++ ld64 1115.7.3
      Host machine cpu family: aarch64
      Host machine cpu: aarch64
      Program python found: YES (/Users/dstansby/software/matplotlib/.venv/bin/python3)
      Dependency pybind11 found: YES 2.13.6 (cached)

      Executing subproject freetype-2.6.1

      freetype-2.6.1| Project name: freetype2
      freetype-2.6.1| Project version: 2.6.1
      freetype-2.6.1| C compiler for the host machine: cc (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")
      freetype-2.6.1| C linker for the host machine: cc ld64 1115.7.3
      freetype-2.6.1| Has header "unistd.h" : YES (cached)
      freetype-2.6.1| Has header "fcntl.h" : YES (cached)
      freetype-2.6.1| Has header "stdint.h" : YES (cached)
      freetype-2.6.1| Configuring ftconfig.h using configuration
      freetype-2.6.1| Configuring ftoption.h using configuration
      freetype-2.6.1| Build targets in project: 2
      freetype-2.6.1| Subproject freetype-2.6.1 finished.


      Executing subproject qhull

      qhull| Project name: qhull
      qhull| Project version: 8.0.2
      qhull| C compiler for the host machine: cc (clang 16.0.0 "Apple clang version 16.0.0 (clang-1600.0.26.6)")
      qhull| C linker for the host machine: cc ld64 1115.7.3
      qhull| Build targets in project: 3
      qhull| Subproject qhull finished.

      Dependency dl found: YES unknown (cached)
      Objective-C compiler for the host machine: clang (clang 16.0.0)
      Objective-C linker for the host machine: clang ld64 1115.7.3
      Dependency appleframeworks (modules: Cocoa) found: YES unknown (cached)
      Configuring _version.py using configuration
      Program /Users/dstansby/software/matplotlib/tools/generate_matplotlibrc.py found: YES (/Users/dstansby/software/matplotlib/tools/generate_matplotlibrc.py)
      Build targets in project: 13

      matplotlib 3.11.0.dev547+gb0153b17b6

        Subprojects
          freetype-2.6.1: YES
          qhull         : YES

        User defined options
          Native files  : /Users/dstansby/software/matplotlib/build/cp312/meson-python-native-file.ini
          b_ndebug      : if-release
          b_vscrt       : md
          buildtype     : release

      Found ninja-1.11.1.git.kitware.jobserver-1 at /Users/dstansby/software/matplotlib/.venv/bin/ninja
      + /Users/dstansby/software/matplotlib/.venv/bin/ninja
      [1/23] Compiling C++ object src/_image.cpython-312-darwin.so.p/py_converters.cpp.o
      FAILED: src/_image.cpython-312-darwin.so.p/py_converters.cpp.o
      c++ -Isrc/_image.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include
      -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden
      -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_image.cpython-312-darwin.so.p/py_converters.cpp.o -MF
      src/_image.cpython-312-darwin.so.p/py_converters.cpp.o.d -o src/_image.cpython-312-darwin.so.p/py_converters.cpp.o -c ../../src/py_converters.cpp
      In file included from ../../src/py_converters.cpp:1:
      ../../src/py_converters.h:12:10: fatal error: 'pybind11/pybind11.h' file not found
         12 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      [2/23] Compiling C++ object src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o
      FAILED: src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o
      c++ -Isrc/_c_internal_utils.cpython-312-darwin.so.p -Isrc -I../../src -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden
      -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o
      -MF src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o.d -o src/_c_internal_utils.cpython-312-darwin.so.p/_c_internal_utils.cpp.o -c
      ../../src/_c_internal_utils.cpp
      ../../src/_c_internal_utils.cpp:19:10: fatal error: 'pybind11/pybind11.h' file not found
         19 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      [3/23] Compiling C++ object src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o
      FAILED: src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o
      c++ -Isrc/_image.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include
      -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden
      -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o -MF
      src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o.d -o src/_image.cpython-312-darwin.so.p/_image_wrapper.cpp.o -c ../../src/_image_wrapper.cpp
      ../../src/_image_wrapper.cpp:1:10: fatal error: 'pybind11/pybind11.h' file not found
          1 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      [4/23] Compiling C++ object src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o
      FAILED: src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o
      c++ -Isrc/_tkagg.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include
      -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden
      -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o -MF
      src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o.d -o src/_tkagg.cpython-312-darwin.so.p/_tkagg.cpp.o -c ../../src/_tkagg.cpp
      ../../src/_tkagg.cpp:32:10: fatal error: 'pybind11/pybind11.h' file not found
         32 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      [5/23] Compiling C++ object src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o
      FAILED: src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o
      c++ -Isrc/_qhull.cpython-312-darwin.so.p -Isrc -I../../src -I../../subprojects/qhull-8.0.2/src
      -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden
      -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -DMPL_DEVNULL=/dev/null -MD -MQ src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o -MF
      src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o.d -o src/_qhull.cpython-312-darwin.so.p/_qhull_wrapper.cpp.o -c ../../src/_qhull_wrapper.cpp
      ../../src/_qhull_wrapper.cpp:8:10: fatal error: 'pybind11/pybind11.h' file not found
          8 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      [6/23] Compiling C++ object src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o
      FAILED: src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o
      c++ -Isrc/ft2font.cpython-312-darwin.so.p -Isrc -I../../src -I../../subprojects/freetype-2.6.1/include
      -I../../extern/agg24-svn/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden
      -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 '-DFREETYPE_BUILD_TYPE="local"' -MD -MQ src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o
      -MF src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o.d -o src/ft2font.cpython-312-darwin.so.p/ft2font_wrapper.cpp.o -c ../../src/ft2font_wrapper.cpp
      ../../src/ft2font_wrapper.cpp:2:10: fatal error: 'pybind11/pybind11.h' file not found
          2 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      [7/23] Compiling C++ object src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o
      FAILED: src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o
      c++ -Isrc/_path.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include
      -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden
      -fvisibility-inlines-hidden -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o -MF
      src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o.d -o src/_path.cpython-312-darwin.so.p/_path_wrapper.cpp.o -c ../../src/_path_wrapper.cpp
      ../../src/_path_wrapper.cpp:1:10: fatal error: 'pybind11/pybind11.h' file not found
          1 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      [8/23] Compiling C++ object src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o
      FAILED: src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o
      c++ -Isrc/_backend_agg.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include
      -I../../subprojects/freetype-2.6.1/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden
      -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o
      -MF src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o.d -o src/_backend_agg.cpython-312-darwin.so.p/_backend_agg_wrapper.cpp.o -c
      ../../src/_backend_agg_wrapper.cpp
      ../../src/_backend_agg_wrapper.cpp:1:10: fatal error: 'pybind11/pybind11.h' file not found
          1 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      [9/23] Compiling C++ object src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o
      FAILED: src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o
      c++ -Isrc/_backend_agg.cpython-312-darwin.so.p -Isrc -I../../src -I../../extern/agg24-svn/include
      -I../../subprojects/freetype-2.6.1/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden
      -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 -MD -MQ src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o -MF
      src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o.d -o src/_backend_agg.cpython-312-darwin.so.p/_backend_agg.cpp.o -c ../../src/_backend_agg.cpp
      In file included from ../../src/_backend_agg.cpp:6:
      ../../src/_backend_agg.h:9:10: fatal error: 'pybind11/pybind11.h' file not found
          9 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      [10/23] Compiling C++ object src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o
      FAILED: src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o
      c++ -Isrc/ft2font.cpython-312-darwin.so.p -Isrc -I../../src -I../../subprojects/freetype-2.6.1/include
      -I../../extern/agg24-svn/include -I/Users/dstansby/.local/share/uv/python/cpython-3.12.8-macos-aarch64-none/include/python3.12
      -I/Users/dstansby/.cache/uv/builds-v0/.tmp4X2jQO/lib/python3.12/site-packages/pybind11/include -I/install/include/python3.12 -fvisibility=hidden -fvisibility-inlines-hidden
      -flto -fdiagnostics-color=always -DNDEBUG -Wall -Winvalid-pch -std=c++17 -O3 '-DFREETYPE_BUILD_TYPE="local"' -MD -MQ src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o -MF
      src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o.d -o src/ft2font.cpython-312-darwin.so.p/ft2font.cpp.o -c ../../src/ft2font.cpp
      In file included from ../../src/ft2font.cpp:13:
      ../../src/mplutils.h:54:10: fatal error: 'pybind11/pybind11.h' file not found
         54 | #include <pybind11/pybind11.h>
            |          ^~~~~~~~~~~~~~~~~~~~~
      1 error generated.
      ninja: build stopped: subcommand failed.

      hint: This usually indicates a problem with the package or the build environment.
DEBUG Released lock at `/Users/dstansby/software/matplotlib/.venv/.lock`

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A working install

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macOS

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Latest main branch

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Python version

Python 3.12.8

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Installation

git checkout

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