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Diffstat (limited to 'test/CMakeLists.txt')
| -rw-r--r-- | test/CMakeLists.txt | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt index 5ff5cff78..8f965adf2 100644 --- a/test/CMakeLists.txt +++ b/test/CMakeLists.txt @@ -216,6 +216,48 @@ if(OPENGL_FOUND) fl_create_example(shape shape.cxx "${GLDEMO_LIBS}") endif(OPENGL_FOUND) +# Test FLTK headers for variable shadowing [-Wshadow] (STR 2728) +# +# The following test program is added only for GNU or Clang compilers which +# are known to support the '-Wshadow' compiler flag. We could also implement +# a compile test but using GNU and Clang appears to be sufficient. +# +# Note 1: usage of `file(GLOB ...)` is discouraged by CMake documentation because +# it doesn't trigger rebuilding when new header files are added. However, this +# is better than nothing. +# +# Note 2: a better way to generate the header file might be with a custom command +# to be able to generate proper dependencies but this is left for later... +# +# Note 3: this test program is only included in CMake builds and was inspired +# by STR 2728: "Add test program to test for shadowed variables (-Wshadow)". +# Its sole purpose is to issue compilation warnings during build time if +# variables are shadowed in public headers. + +if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU" OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang") + + set(include_all "${CMAKE_CURRENT_BINARY_DIR}/include_all.h") + file(WRITE ${include_all} "/* DO NOT EDIT - this file is created by CMake */\n") + + file(GLOB all_headers "${FLTK_SOURCE_DIR}/FL/*.[hH]") + foreach(hd ${all_headers}) + get_filename_component(hd "${hd}" NAME) + # skip headers that must not be included directly and fl_config.h if it exists + string(REGEX MATCH "^(mac|win32|wayland|fl_config)\.[hH]$" skip "${hd}") + if(skip STREQUAL "") + file(APPEND ${include_all} "#include <FL/${hd}>\n") + endif() + endforeach() + file(APPEND ${include_all} "/* End of generated file */\n") + + # now add the 'shadow_variables' target and set the compiler flag + + fl_create_example(shadow_variables shadow_variables.cxx fltk::fltk) + set_target_properties(shadow_variables PROPERTIES COMPILE_FLAGS -Wshadow) + +endif() # GNU or Clang (-Wshadow test) + + # *** EXPERIMENTAL *** # Build some of the demo programs linked against the shared FLTK lib(s). # This is currently pretty complicated and should be improved. |