update: address review points

.github/workflows/ci.yml

@@ -106,10 +106,10 @@ jobs:
       run: cmake --build build -j 2
 
     - name: Python tests C++11
-      run: cmake --build build --target pytest -j 2 -v
+      run: cmake --build build --target pytest -j 2
 
     - name: C++11 tests
-      run: cmake --build build --target cpptest -j 2 -v
+      run: cmake --build build --target cpptest -j 2
 
     - name: Interface test C++11
       run: cmake --build build --target test_cmake_build
@@ -125,7 +125,7 @@ jobs:
         -DPYTHON_EXECUTABLE=$(python -c "import sys; print(sys.executable)")
 
     - name: Build C++${{ matrix.max-cxx-std }}
-      run: cmake --build build2 -j 2 -v
+      run: cmake --build build2 -j 2
 
     - name: Python tests C++${{ matrix.max-cxx-std }}
       run: cmake --build build2 --target pytest

CMakeLists.txt

@@ -7,7 +7,7 @@
 
 cmake_minimum_required(VERSION 3.7)
 
-# VERSION 3.7...3.18, but some versions of VS have a patched CMake 3.11
+# VERSION 3.7...3.18, but some versions of MCVS have a patched CMake 3.11
 # that do not work properly with this syntax, so using the following workaround:
 if(${CMAKE_VERSION} VERSION_LESS 3.18)
     cmake_policy(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION})
@@ -21,14 +21,19 @@ file(
     "${CMAKE_CURRENT_SOURCE_DIR}/include/pybind11/detail/common.h"
   pybind11_version_defines
   REGEX
-    "#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH|TYPE) ")
+    "#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH) ")
 
 foreach(ver ${pybind11_version_defines})
-    if (ver MATCHES [=[#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH|TYPE) +"?([^ ^"]+)"?$]=])
+    if (ver MATCHES [[#define PYBIND11_VERSION_(MAJOR|MINOR|PATCH) +([^ ]+)$]])
         set(PYBIND11_VERSION_${CMAKE_MATCH_1} "${CMAKE_MATCH_2}")
     endif()
 endforeach()
 
+if(PYBIND11_VERSION_PATCH MATCHES [[([a-zA-Z]+)]])
+    set(PYBIND11_VERSION_TYPE "${CMAKE_MATCH_1}")
+endif()
+string(REGEX MATCH "[0-9]+" PYBIND11_VERSION_PATCH "${PYBIND11_VERSION_PATCH}")
+
 project(
     pybind11
   LANGUAGES
@@ -42,10 +47,11 @@ include(GNUInstallDirs)
 include(CMakePackageConfigHelpers)
 include(CMakeDependentOption)
 
+message(STATUS "pybind11 v${pybind11_VERSION} ${PYBIND11_VERSION_TYPE}")
+
 # Check if pybind11 is being used directly or via add_subdirectory
 if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
     set(PYBIND11_MASTER_PROJECT ON)
-    message(STATUS "pybind11 v${pybind11_VERSION} ${PYBIND11_VERSION_TYPE}")
     message(STATUS "CMake ${CMAKE_VERSION}")
 
     if(CMAKE_CXX_STANDARD)
@@ -92,6 +98,9 @@ set(PYBIND11_HEADERS
     include/pybind11/stl.h
     include/pybind11/stl_bind.h
 )
+
+# TODO: compare with grep and warn if missmatched
+
 # cmake 3.12 added list(TRANSFORM <list> PREPEND
 # But we can't use it yet
 string(REPLACE "include/" "${CMAKE_CURRENT_SOURCE_DIR}/include/"
@@ -125,6 +134,7 @@ endif()
 
 # Note: when creating targets, you cannot use if statements at configure time -
 # you need generator expressions, because those will be placed in the target file.
+# You can also place ifs *in* the Config.in, but not here.
 
 # Build an interface library target:
 add_library(pybind11 INTERFACE)
@@ -139,21 +149,14 @@ if(CMAKE_VERSION VERSION_LESS 3.13)
     target_compile_features(
         pybind11
       INTERFACE
-        cxx_auto_type
+        cxx_inheriting_constructors
-        cxx_constexpr
-        cxx_defaulted_functions
-        cxx_lambdas
-        cxx_nullptr
-        cxx_range_for
-        cxx_right_angle_brackets
-        cxx_strong_enums
         cxx_user_literals
-        cxx_variadic_templates
+        cxx_right_angle_brackets
       )
 else()
     # This was added in CMake 3.8, but we are keeping a consistent breaking
     # point for the config file at 3.13. A config generated by CMake 3.13+
-    # can ony be read in 3.13+ due to the SHELL usage later, so this is safe to do.
+    # can only be read in 3.13+ due to the SHELL usage later, so this is safe to do.
     target_compile_features(pybind11 INTERFACE cxx_std_11)
 endif()
 
@@ -170,13 +173,16 @@ if(CMAKE_VERSION VERSION_LESS 3.13)
     target_link_libraries(module INTERFACE "$<$<PLATFORM_ID:Darwin>:-undefined dynamic_lookup>")
 else()
     # SHELL (3.12+) forces this to remain together, and link_options was added in 3.13+
+    # This is safer, because you are ensured the deduplication pass in CMake will not consider
+    # these separate and remove one but not the other.
     target_link_options(module INTERFACE "$<$<PLATFORM_ID:Darwin>:SHELL:-undefined dynamic_lookup>")
 endif()
 
 
-message(STATUS "CXX Compiler version: ${CMAKE_CXX_COMPILER_VERSION}")
-
 # Workaround for Python 2.7 and C++17 (C++14 as a warning) incompatibility
+# This adds the flags -Wno-register and -Wno-deprecated-register if the compiler
+# is Clang 3.9+ or AppleClang and the compile language is CXX, or /wd5033 for MSVC (all languages,
+# since MSVC didn't recognize COMPILE_LANGUAGE until CMake 3.11+).
 set(clang_4plus "$<AND:$<CXX_COMPILER_ID:Clang>,$<NOT:$<VERSION_LESS:$<CXX_COMPILER_VERSION>,3.9>>>")
 set(no_register "$<OR:${clang_4plus},$<CXX_COMPILER_ID:AppleClang>>")
 set(cxx_no_register "$<AND:$<COMPILE_LANGUAGE:CXX>,${no_register}>")
@@ -214,6 +220,7 @@ if(PYBIND11_INSTALL)
 
         set(CMAKE_SIZEOF_VOID_P ${_PYBIND11_CMAKE_SIZEOF_VOID_P})
     else()
+        # CMake 3.14+ natively supports header-only libraries
         write_basic_package_version_file(
             ${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}ConfigVersion.cmake
           VERSION

docs/compiling.rst

@@ -97,7 +97,7 @@ Configuration variables
 -----------------------
 
 By default, pybind11 will compile modules with the compiler default or the
-minimum standard required by PyBind11, whichever is higher.  You can set the
+minimum standard required by pybind11, whichever is higher.  You can set the
 standard explicitly with
 `CMAKE_CXX_STANDARD <https://cmake.org/cmake/help/latest/variable/CMAKE_CXX_STANDARD.html>`_:
 
@@ -124,7 +124,7 @@ For example:
     # Another method:
     cmake -DPYTHON_EXECUTABLE=/path/to/python ..
 
-    # You will often see this idiom:
+    # This often is a good way to get the current Python, works in environments:
     cmake -DPYTHON_EXECUTABLE=$(python3 -c "import sys; print(sys.executable)") ..
 
 find_package vs. add_subdirectory

include/pybind11/detail/common.h

@@ -11,8 +11,7 @@
 
 #define PYBIND11_VERSION_MAJOR 2
 #define PYBIND11_VERSION_MINOR 6
-#define PYBIND11_VERSION_PATCH 0
+#define PYBIND11_VERSION_PATCH dev0
-#define PYBIND11_VERSION_TYPE "dev"
 
 #define PYBIND11_NAMESPACE_BEGIN(name) namespace name {
 #define PYBIND11_NAMESPACE_END(name) }