actually perform system tinyxml2 build on macos / fixed system tinyxml2 include (#4445)

* lib/CMakeLists.txt: removed unnecessary external include

* look up tinyxml2 include dir when using system one and specify it

* lib/CMakeLists.txt: do not treat bundled headers as system ones

* CI-unixish.yml: actually perform system tinyxml2 build on macos

.github/workflows/CI-unixish.yml

@@ -22,7 +22,6 @@ jobs:
 
       - name: ccache
         uses: hendrikmuhs/ccache-action@v1.2
-        if: contains(matrix.os, 'ubuntu')
         with:
           key: ${{ github.workflow }}-${{ github.job }}-${{ matrix.os }}
 
@@ -36,7 +35,7 @@ jobs:
       - name: Install missing software on macos
         if: contains(matrix.os, 'macos')
         run: |
-          brew install coreutils qt@5
+          brew install coreutils qt@5 tinyxml2
 
       - name: CMake build on ubuntu (with GUI / system tinyxml2)
         if: contains(matrix.os, 'ubuntu')
@@ -44,8 +43,13 @@ jobs:
           cmake -S . -B cmake.output.tinyxml2 -G "Unix Makefiles" -DHAVE_RULES=On -DBUILD_TESTS=On -DBUILD_GUI=On -DWITH_QCHART=On -DUSE_BUNDLED_TINYXML2=Off -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache
           cmake --build cmake.output.tinyxml2 -- -j$(nproc)
 
+      - name: CMake build on macos (with GUI / system tinyxml2)
+        if: contains(matrix.os, 'macos')
+        run: |
+          cmake -S . -B cmake.output.tinyxml2 -G "Unix Makefiles" -DHAVE_RULES=On -DBUILD_TESTS=On -DBUILD_GUI=On -DWITH_QCHART=On -DUSE_BUNDLED_TINYXML2=Off -DCMAKE_C_COMPILER_LAUNCHER=ccache -DCMAKE_CXX_COMPILER_LAUNCHER=ccache -DQt5_DIR=$(brew --prefix qt@5)/lib/cmake/Qt5
+          cmake --build cmake.output.tinyxml2 -- -j$(nproc)
+
       - name: Run CMake test (system tinyxml2)
-        if: contains(matrix.os, 'ubuntu')
         run: |
           cmake --build cmake.output.tinyxml2 --target check -- -j$(nproc)
 

cli/CMakeLists.txt

@@ -7,6 +7,8 @@ add_library(cli_objs OBJECT ${hdrs} ${srcs})
 target_include_directories(cli_objs PRIVATE ${PROJECT_SOURCE_DIR}/lib/)
 if(USE_BUNDLED_TINYXML2)
     target_include_directories(cli_objs PRIVATE ${PROJECT_SOURCE_DIR}/externals/tinyxml2/)
+else()
+    target_include_directories(cli_objs SYSTEM PRIVATE ${tinyxml2_INCLUDE_DIRS})
 endif()
 target_include_directories(cli_objs PRIVATE ${PROJECT_SOURCE_DIR}/externals/simplecpp/)
 
@@ -24,6 +26,8 @@ add_executable(cppcheck ${cppcheck_SOURCES})
 target_include_directories(cppcheck PRIVATE ${PROJECT_SOURCE_DIR}/lib/)
 if(USE_BUNDLED_TINYXML2)
     target_include_directories(cppcheck PRIVATE ${PROJECT_SOURCE_DIR}/externals/tinyxml2/)
+else()
+    target_include_directories(cppcheck SYSTEM PRIVATE ${tinyxml2_INCLUDE_DIRS})
 endif()
 target_include_directories(cppcheck PRIVATE ${PROJECT_SOURCE_DIR}/externals/simplecpp/)
 if (HAVE_RULES)

cmake/findDependencies.cmake

@@ -58,9 +58,11 @@ if (NOT USE_BUNDLED_TINYXML2)
     find_package(tinyxml2 QUIET)
     if (TARGET tinyxml2::tinyxml2)
         set(tinyxml2_LIBRARIES "tinyxml2::tinyxml2")
+        set(tinyxml2_INCLUDE_DIRS $<TARGET_PROPERTY:tinyxml2::tinyxml2,INTERFACE_INCLUDE_DIRECTORIES>)
     else()
         find_library(tinyxml2_LIBRARIES tinyxml2)
-        if (NOT tinyxml2_LIBRARIES)
+        find_path(tinyxml2_INCLUDE_DIRS tinyxml2.h)
+        if (NOT tinyxml2_LIBRARIES AND NOT tinyxml2_INCLUDE_DIRS)
             message(FATAL_ERROR "tinyxml2 has not been found")
         else()
             set(tinyxml2_FOUND 1)

cmake/printInfo.cmake

@@ -67,6 +67,7 @@ message( STATUS )
 message( STATUS "USE_BUNDLED_TINYXML2 =  ${USE_BUNDLED_TINYXML2}" )
 if (NOT USE_BUNDLED_TINYXML2)
     message(STATUS "tinyxml2_LIBRARIES =    ${tinyxml2_LIBRARIES}")
+    message(STATUS "tinyxml2_INCLUDE_DIRS = ${tinyxml2_INCLUDE_DIRS}")
 endif()
 message( STATUS )
 message( STATUS "USE_BOOST =             ${USE_BOOST}" )

gui/CMakeLists.txt

@@ -29,6 +29,8 @@ if (BUILD_GUI)
     target_include_directories(cppcheck-gui PRIVATE ${PROJECT_SOURCE_DIR}/lib/)
     if(USE_BUNDLED_TINYXML2)
         target_include_directories(cppcheck-gui PRIVATE ${PROJECT_SOURCE_DIR}/externals/tinyxml2/)
+    else()
+        target_include_directories(cppcheck-gui SYSTEM PRIVATE ${tinyxml2_INCLUDE_DIRS})
     endif()
     if (HAVE_RULES)
         target_link_libraries(cppcheck-gui ${PCRE_LIBRARY})

lib/CMakeLists.txt

@@ -33,12 +33,13 @@ else()
 endif()
 
 add_library(lib_objs OBJECT ${srcs_lib} ${hdrs})
-target_include_directories(lib_objs SYSTEM PRIVATE ${PROJECT_SOURCE_DIR}/externals/)
 if(USE_BUNDLED_TINYXML2)
-    target_include_directories(lib_objs SYSTEM PRIVATE ${PROJECT_SOURCE_DIR}/externals/tinyxml2/)
+    target_include_directories(lib_objs PRIVATE ${PROJECT_SOURCE_DIR}/externals/tinyxml2/)
+else()
+    target_include_directories(lib_objs SYSTEM PRIVATE ${tinyxml2_INCLUDE_DIRS})
 endif()
-target_include_directories(lib_objs SYSTEM PRIVATE ${PROJECT_SOURCE_DIR}/externals/picojson/)
-target_include_directories(lib_objs SYSTEM PRIVATE ${PROJECT_SOURCE_DIR}/externals/simplecpp/)
+target_include_directories(lib_objs PRIVATE ${PROJECT_SOURCE_DIR}/externals/picojson/)
+target_include_directories(lib_objs PRIVATE ${PROJECT_SOURCE_DIR}/externals/simplecpp/)
 if (HAVE_RULES)
     target_include_directories(lib_objs SYSTEM PRIVATE ${PCRE_INCLUDE})
 endif()
@@ -49,3 +50,10 @@ endif()
 if (NOT CMAKE_DISABLE_PRECOMPILE_HEADERS)
     target_precompile_headers(lib_objs PRIVATE precompiled.h)
 endif()
+
+if (CMAKE_CXX_COMPILER_ID MATCHES "Clang")
+    # -Wfloat-equal is generated by picojson.h
+    set_source_files_properties(cppcheck.cpp PROPERTIES COMPILE_FLAGS -Wno-float-equal)
+    set_source_files_properties(importproject.cpp PROPERTIES COMPILE_FLAGS -Wno-float-equal)
+    set_source_files_properties(settings.cpp PROPERTIES COMPILE_FLAGS -Wno-float-equal)
+endif()

test/CMakeLists.txt

@@ -10,6 +10,8 @@ if (BUILD_TESTS)
     target_include_directories(testrunner PRIVATE ${PROJECT_SOURCE_DIR}/lib/ ${PROJECT_SOURCE_DIR}/cli/)
     if(USE_BUNDLED_TINYXML2)
         target_include_directories(testrunner PRIVATE ${PROJECT_SOURCE_DIR}/externals/tinyxml2)
+    else()
+        target_include_directories(testrunner SYSTEM PRIVATE ${tinyxml2_INCLUDE_DIRS})
     endif()
     target_include_directories(testrunner PRIVATE ${PROJECT_SOURCE_DIR}/externals/simplecpp/)
     if (HAVE_RULES)