Merge branch 'pybind:master' into master

CMakeLists.txt

@@ -289,7 +289,21 @@ if(PYBIND11_INSTALL)
 
   # pkg-config support
   if(NOT prefix_for_pc_file)
-    set(prefix_for_pc_file "${CMAKE_INSTALL_PREFIX}")
+    if(IS_ABSOLUTE "${CMAKE_INSTALL_DATAROOTDIR}")
+      set(prefix_for_pc_file "${CMAKE_INSTALL_PREFIX}")
+    else()
+      set(pc_datarootdir "${CMAKE_INSTALL_DATAROOTDIR}")
+      if(CMAKE_VERSION VERSION_LESS 3.20)
+        set(prefix_for_pc_file "\${pcfiledir}/..")
+        while(pc_datarootdir)
+          get_filename_component(pc_datarootdir "${pc_datarootdir}" DIRECTORY)
+          string(APPEND prefix_for_pc_file "/..")
+        endwhile()
+      else()
+        cmake_path(RELATIVE_PATH CMAKE_INSTALL_PREFIX BASE_DIRECTORY CMAKE_INSTALL_DATAROOTDIR
+                   OUTPUT_VARIABLE prefix_for_pc_file)
+      endif()
+    endif()
   endif()
   join_paths(includedir_for_pc_file "\${prefix}" "${CMAKE_INSTALL_INCLUDEDIR}")
   configure_file("${CMAKE_CURRENT_SOURCE_DIR}/tools/pybind11.pc.in"

noxfile.py

@@ -57,7 +57,7 @@ def tests_packaging(session: nox.Session) -> None:
     Run the packaging tests.
     """
 
-    session.install("-r", "tests/requirements.txt", "--prefer-binary")
+    session.install("-r", "tests/requirements.txt")
     session.run("pytest", "tests/extra_python_package", *session.posargs)
 
 

tests/requirements.txt

@@ -1,10 +1,15 @@
-build==0.8.0
-numpy==1.21.5; platform_python_implementation=="PyPy" and sys_platform=="linux" and python_version=="3.7"
-numpy==1.19.3; platform_python_implementation!="PyPy" and python_version=="3.6"
-numpy==1.21.5; platform_python_implementation!="PyPy" and python_version>="3.7" and python_version<"3.10"
-numpy==1.22.2; platform_python_implementation!="PyPy" and python_version>="3.10" and python_version<"3.11"
-pytest==7.0.0; platform_python_implementation!="PyPy" and python_version=="3.6"
-pytest==7.2.0; platform_python_implementation!="PyPy" and python_version>="3.7"
+--only-binary=:all:
+build~=0.9; python_version=="3.6"
+build~=1.0; python_version>="3.7"
+numpy~=1.20.0; python_version=="3.7" and platform_python_implementation=="PyPy"
+numpy~=1.23.0; python_version=="3.8" and platform_python_implementation=="PyPy"
+numpy~=1.25.0; python_version=="3.9" and platform_python_implementation=='PyPy'
+numpy~=1.19.3; platform_python_implementation!="PyPy" and python_version=="3.6"
+numpy~=1.21.5; platform_python_implementation!="PyPy" and python_version>="3.7" and python_version<"3.10"
+numpy~=1.22.2; platform_python_implementation!="PyPy" and python_version=="3.10"
+numpy~=1.26.0; platform_python_implementation!="PyPy" and python_version>="3.11"
+pytest~=7.0
 pytest-timeout
-scipy==1.5.4; platform_python_implementation!="PyPy" and python_version<"3.10"
-scipy==1.10.0; platform_python_implementation!="PyPy" and python_version=="3.10"
+scipy~=1.5.4; platform_python_implementation!="PyPy" and python_version<"3.10"
+scipy~=1.8.0; platform_python_implementation!="PyPy" and python_version=="3.10"
+scipy~=1.11.1; platform_python_implementation!="PyPy" and python_version>="3.11"

tools/pybind11Common.cmake

@@ -218,8 +218,15 @@ if(NOT _pybind11_nopython)
 
     execute_process(
       COMMAND
-        ${${_Python}_EXECUTABLE} -c
-        "from pkg_resources import get_distribution; print(get_distribution('${PYPI_NAME}').version)"
+        ${${_Python}_EXECUTABLE} -c "
+try:
+    from importlib.metadata import version
+except ImportError:
+    from pkg_resources import get_distribution
+    def version(s):
+        return get_distribution(s).version
+print(version('${PYPI_NAME}'))
+        "
       RESULT_VARIABLE RESULT_PRESENT
       OUTPUT_VARIABLE PKG_VERSION
       ERROR_QUIET)
@@ -300,21 +307,24 @@ function(_pybind11_generate_lto target prefer_thin_lto)
       set(cxx_append ";-fno-fat-lto-objects")
     endif()
 
-    if(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64le" OR CMAKE_SYSTEM_PROCESSOR MATCHES "mips64")
-      set(NO_FLTO_ARCH TRUE)
+    if(prefer_thin_lto)
+      set(thin "=thin")
     else()
-      set(NO_FLTO_ARCH FALSE)
+      set(thin "")
     endif()
 
-    if(CMAKE_CXX_COMPILER_ID MATCHES "Clang"
-       AND prefer_thin_lto
-       AND NOT NO_FLTO_ARCH)
+    if(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64le" OR CMAKE_SYSTEM_PROCESSOR MATCHES "mips64")
+      # Do nothing
+    elseif(CMAKE_SYSTEM_PROCESSOR MATCHES emscripten)
+      # This compile is very costly when cross-compiling, so set this without checking
+      set(PYBIND11_LTO_CXX_FLAGS "-flto${thin}${cxx_append}")
+      set(PYBIND11_LTO_LINKER_FLAGS "-flto${thin}${linker_append}")
+    elseif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
       _pybind11_return_if_cxx_and_linker_flags_work(
-        HAS_FLTO_THIN "-flto=thin${cxx_append}" "-flto=thin${linker_append}"
+        HAS_FLTO_THIN "-flto${thin}${cxx_append}" "-flto=${thin}${linker_append}"
         PYBIND11_LTO_CXX_FLAGS PYBIND11_LTO_LINKER_FLAGS)
     endif()
-
-    if(NOT HAS_FLTO_THIN AND NOT NO_FLTO_ARCH)
+    if(NOT HAS_FLTO_THIN)
       _pybind11_return_if_cxx_and_linker_flags_work(
         HAS_FLTO "-flto${cxx_append}" "-flto${linker_append}" PYBIND11_LTO_CXX_FLAGS
         PYBIND11_LTO_LINKER_FLAGS)

tools/pybind11NewTools.cmake

@@ -39,12 +39,23 @@ if(NOT Python_FOUND AND NOT Python3_FOUND)
     set(_pybind11_dev_component Development.Module OPTIONAL_COMPONENTS Development.Embed)
   endif()
 
+  # Callers need to be able to access Python_EXECUTABLE
+  set(_pybind11_global_keyword "")
+  if(NOT is_config AND NOT DEFINED Python_ARTIFACTS_INTERACTIVE)
+    set(Python_ARTIFACTS_INTERACTIVE TRUE)
+    if(NOT CMAKE_VERSION VERSION_LESS 3.24)
+      set(_pybind11_global_keyword "GLOBAL")
+    endif()
+  endif()
+
   find_package(Python 3.6 REQUIRED COMPONENTS Interpreter ${_pybind11_dev_component}
-                                              ${_pybind11_quiet})
+                                              ${_pybind11_quiet} ${_pybind11_global_keyword})
 
   # If we are in submodule mode, export the Python targets to global targets.
   # If this behavior is not desired, FindPython _before_ pybind11.
-  if(NOT is_config)
+  if(NOT is_config
+     AND NOT Python_ARTIFACTS_INTERACTIVE
+     AND _pybind11_global_keyword STREQUAL "")
     if(TARGET Python::Python)
       set_property(TARGET Python::Python PROPERTY IMPORTED_GLOBAL TRUE)
     endif()
@@ -53,6 +64,22 @@ if(NOT Python_FOUND AND NOT Python3_FOUND)
       set_property(TARGET Python::Module PROPERTY IMPORTED_GLOBAL TRUE)
     endif()
   endif()
+
+  # Explicitly export version for callers (including our own functions)
+  if(NOT is_config AND Python_ARTIFACTS_INTERACTIVE)
+    set(Python_VERSION
+        "${Python_VERSION}"
+        CACHE INTERNAL "")
+    set(Python_VERSION_MAJOR
+        "${Python_VERSION_MAJOR}"
+        CACHE INTERNAL "")
+    set(Python_VERSION_MINOR
+        "${Python_VERSION_MINOR}"
+        CACHE INTERNAL "")
+    set(Python_VERSION_PATCH
+        "${Python_VERSION_PATCH}"
+        CACHE INTERNAL "")
+  endif()
 endif()
 
 if(Python_FOUND)