Extend FindPHP.cmake module

This enables using the same find module in various scenarios:
- building PHP extension with CMake
- building application with embedded PHP
- finding only PHP executable

Author: petk

.github/workflows/ci.yaml

@@ -149,3 +149,19 @@ jobs:
         run: |
           cd php-${{ matrix.php }}
           ctest --preset all-enabled
+
+      - name: Install PHP
+        run: |
+          cd php-${{ matrix.php }}
+          cmake --install php-build/all-enabled
+
+      - name: Setup shared standalone extension
+        run: |
+          cd php-${{ matrix.php }}
+          php ext/ext_skel.php --ext phantom
+          mkdir ext/phantom/cmake/modules
+          cp cmake/modules/FindPHP.cmake ext/phantom/cmake/modules
+          cmake -S ext/phantom -B ext/phantom/cmake-build
+          cmake --build ext/phantom/cmake-build -j
+          cmake --install ext/phantom/cmake-build
+          #php -d extension=phantom -m | grep phantom

bin/check-cmake.php

@@ -327,7 +327,7 @@ function checkCMakeInclude(Iterator $files, array $modules): int
 };
 
 /**
- * Check if given string is regular expression.
+ * Check if given string is a regular expression.
  */
 function isRegularExpression(string $string): bool
 {

cmake/cmake/CMakeDefaults.cmake

@@ -8,9 +8,7 @@ https://cmake.org/cmake/help/latest/manual/cmake-variables.7.html
 include_guard(GLOBAL)
 
 # Set CMake module paths where include() and find_package() look for modules.
-if(NOT ${CMAKE_CURRENT_LIST_DIR}/modules IN_LIST CMAKE_MODULE_PATH)
-  list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules)
-endif()
+list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR}/modules)
 
 # Automatically include current source or build tree for the current target.
 set(CMAKE_INCLUDE_CURRENT_DIR ON)

cmake/cmake/Platform.cmake

@@ -23,7 +23,7 @@ include(PHP/SystemExtensions)
 # _GNU_SOURCE.
 target_link_libraries(php_config INTERFACE PHP::SystemExtensions)
 
-# Set installation directories.
+# Set GNU standard installation directories.
 include(GNUInstallDirs)
 
 # Detect C standard library implementation.

cmake/cmake/Requirements.cmake

@@ -56,6 +56,4 @@ find_package(Sendmail)
 # used at the build phase, where possible. The minimum version should match the
 # version required to run these PHP scripts.
 ################################################################################
-block(PROPAGATE PHP_FOUND)
-  find_package(PHP 7.4)
-endblock()
+find_package(PHP 7.4 COMPONENTS Interpreter)