Workaround for DEPFILE

The `DEPFILE` possibility in CMake is only available in the newer versions of CMake and also the availability is platform dependent. The latest addition is for Windows / XCode and this is in version 3.21, so we restrict us to this version for determining whether or not the `DEPFILE` possibility exists.
doxygen · Jul 10, 2022 · 3b30f16 · 3b30f16
1 parent d17002b
commit 3b30f16
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Showing 3 changed files with 52 additions and 9 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -47,6 +47,13 @@ list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/Sanitizers")
 set(TOP "${PROJECT_SOURCE_DIR}")
 include(version)
 
+message(STATUS "Using Cmake version ${CMAKE_VERSION}")
+if (${CMAKE_VERSION} VERSION_LESS "3.21.0")
+    set(depfile_supported  "0" CACHE INTERNAL "DEPFILE is not supported")
+else()
+    set(depfile_supported  "1" CACHE INTERNAL "DEPFILE is supported")
+endif()
+
 set(sqlite3  "0" CACHE INTERNAL "used in settings.h")
 set(clang    "0" CACHE INTERNAL "used in settings.h")
 if (use_sqlite3)

diff --git a/addon/doxywizard/CMakeLists.txt b/addon/doxywizard/CMakeLists.txt
@@ -81,7 +81,30 @@ set_source_files_properties(${GENERATED_SRC_WIZARD}/configdoc.cpp PROPERTIES GEN
 
 set(LEX_FILES config_doxyw)
 
+if (NOT depfile_supported)
+    # In case the DEPFILE possibility is not supported the complete list of lex include files for the dependency has to be used
+    set(LEX_INC_FILES)
+endif()
+
 foreach(lex_file ${LEX_FILES})
+    if (depfile_supported)
+        add_custom_command(
+            COMMAND ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/src/pre_lex.py ${PROJECT_SOURCE_DIR}/addon/doxywizard/${lex_file}.l  ${GENERATED_SRC_WIZARD}/${lex_file}.l ${GENERATED_SRC_WIZARD}/${lex_file}.corr ${GENERATED_SRC_WIZARD}/${lex_file}.d ${PROJECT_SOURCE_DIR}/src
+            DEPENDS ${PROJECT_SOURCE_DIR}/src/pre_lex.py ${PROJECT_SOURCE_DIR}/addon/doxywizard/${lex_file}.l
+            DEPFILE ${GENERATED_SRC_WIZARD}/${lex_file}.d
+            OUTPUT  ${GENERATED_SRC_WIZARD}/${lex_file}.l ${GENERATED_SRC_WIZARD}/${lex_file}.corr ${GENERATED_SRC_WIZARD}/${lex_file}.d
+        )
+        set_source_files_properties(${GENERATED_SRC_WIZARD}/${lex_file}.l PROPERTIES GENERATED 1)
+        set_source_files_properties(${GENERATED_SRC_WIZARD}/${lex_file}.corr PROPERTIES GENERATED 1)
+        set_source_files_properties(${GENERATED_SRC_WIZARD}/${lex_file}.d PROPERTIES GENERATED 1)
+    else()
+        add_custom_command(
+            COMMAND ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/src/pre_lex.py ${PROJECT_SOURCE_DIR}/addon/doxywizard/${lex_file}.l  ${GENERATED_SRC_WIZARD}/${lex_file}.l ${GENERATED_SRC_WIZARD}/${lex_file}.corr ${PROJECT_SOURCE_DIR}/src
+            DEPENDS ${PROJECT_SOURCE_DIR}/src/pre_lex.py ${PROJECT_SOURCE_DIR}/addon/doxywizard/${lex_file}.l ${LEX_INC_FILES}
+            OUTPUT  ${GENERATED_SRC_WIZARD}/${lex_file}.corr ${GENERATED_SRC_WIZARD}/${lex_file}.l
+        )
+    endif()
+
     add_custom_command(
         COMMAND ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/src/pre_lex.py ${PROJECT_SOURCE_DIR}/addon/doxywizard/${lex_file}.l  ${GENERATED_SRC_WIZARD}/${lex_file}.l ${GENERATED_SRC_WIZARD}/${lex_file}.corr ${GENERATED_SRC_WIZARD}/${lex_file}.d ${PROJECT_SOURCE_DIR}/src
         DEPENDS ${PROJECT_SOURCE_DIR}/src/pre_lex.py ${PROJECT_SOURCE_DIR}/addon/doxywizard/${lex_file}.l

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
@@ -112,20 +112,33 @@ set(LEX_FILES scanner
     lexscanner
     configimpl)
 
+if (NOT depfile_supported)
+    # In case the DEPFILE possibility is not supported the complete list of lex include files for the dependency has to be used
+    set(LEX_INC_FILES)
+endif()
+
 # unfortunately ${LEX_FILES_H} and ${LEX_FILES_CPP} don't work in older versions of CMake (like 3.6.2) for add_library
 foreach(lex_file ${LEX_FILES})
     set(LEX_FILES_H ${LEX_FILES_H} " " ${GENERATED_SRC}/${lex_file}.l.h CACHE INTERNAL "Stores generated files")
     set(LEX_FILES_CPP ${LEX_FILES_CPP} " " ${GENERATED_SRC}/${lex_file}.cpp CACHE INTERNAL "Stores generated files")
 
-    add_custom_command(
-        COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_LIST_DIR}/pre_lex.py ${CMAKE_CURRENT_LIST_DIR}/${lex_file}.l  ${GENERATED_SRC}/${lex_file}.l ${GENERATED_SRC}/${lex_file}.corr ${GENERATED_SRC}/${lex_file}.d ${CMAKE_CURRENT_LIST_DIR}
-        DEPENDS ${CMAKE_CURRENT_LIST_DIR}/pre_lex.py ${CMAKE_CURRENT_LIST_DIR}/${lex_file}.l
-        DEPFILE ${GENERATED_SRC}/${lex_file}.d
-        OUTPUT  ${GENERATED_SRC}/${lex_file}.l ${GENERATED_SRC}/${lex_file}.corr ${GENERATED_SRC}/${lex_file}.d
-    )
-    set_source_files_properties(${GENERATED_SRC}/${lex_file}.l PROPERTIES GENERATED 1)
-    set_source_files_properties(${GENERATED_SRC}/${lex_file}.corr PROPERTIES GENERATED 1)
-    set_source_files_properties(${GENERATED_SRC}/${lex_file}.d PROPERTIES GENERATED 1)
+    if (depfile_supported)
+        add_custom_command(
+            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_LIST_DIR}/pre_lex.py ${CMAKE_CURRENT_LIST_DIR}/${lex_file}.l  ${GENERATED_SRC}/${lex_file}.l ${GENERATED_SRC}/${lex_file}.corr ${GENERATED_SRC}/${lex_file}.d ${CMAKE_CURRENT_LIST_DIR}
+            DEPENDS ${CMAKE_CURRENT_LIST_DIR}/pre_lex.py ${CMAKE_CURRENT_LIST_DIR}/${lex_file}.l
+            DEPFILE ${GENERATED_SRC}/${lex_file}.d
+            OUTPUT  ${GENERATED_SRC}/${lex_file}.l ${GENERATED_SRC}/${lex_file}.corr ${GENERATED_SRC}/${lex_file}.d
+        )
+        set_source_files_properties(${GENERATED_SRC}/${lex_file}.l PROPERTIES GENERATED 1)
+        set_source_files_properties(${GENERATED_SRC}/${lex_file}.corr PROPERTIES GENERATED 1)
+        set_source_files_properties(${GENERATED_SRC}/${lex_file}.d PROPERTIES GENERATED 1)
+    else()
+        add_custom_command(
+            COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_LIST_DIR}/pre_lex.py ${CMAKE_CURRENT_LIST_DIR}/${lex_file}.l  ${GENERATED_SRC}/${lex_file}.l ${GENERATED_SRC}/${lex_file}.corr ${CMAKE_CURRENT_LIST_DIR}
+            DEPENDS ${CMAKE_CURRENT_LIST_DIR}/pre_lex.py ${CMAKE_CURRENT_LIST_DIR}/${lex_file}.l ${LEX_INC_FILES}
+            OUTPUT  ${GENERATED_SRC}/${lex_file}.corr ${GENERATED_SRC}/${lex_file}.l
+        )
+    endif()
     add_custom_command(
         COMMAND ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_LIST_DIR}/scan_states.py ${GENERATED_SRC}/${lex_file}.l > ${GENERATED_SRC}/${lex_file}.l.h
         DEPENDS ${CMAKE_CURRENT_LIST_DIR}/scan_states.py ${GENERATED_SRC}/${lex_file}.l