main question: Is there a configuration for cmake, to show or ignore compiler warnings/errors only from a certain directory?
alternative solution: How can I toggle this in QtCreator?
background / motivation : I'm working on a bigger CMake-project and want to focus on warnings and errors only from my subproject. I'm working with QtCreator and it annoys me to look for "my" errors/warnings under a pile of foreign ones.
You can set compiler warning options in CMake at least for certain target or certain files .
# For target
set_target_properties(your_project_name PROPERTIES COMPILE_FLAGS "...")
# For files
set_source_files_properties(
${list_of_your_files}
PROPERTIES
COMPILE_FLAGS "..."
)
It is also possible to set the options per-folder basis by separating your project as subproject, add it using add_subdirectory(your_project)
and in your project CMakeLists.txt use add_definitions(...)
.
From CMake documentation:
add_definitions Adds flags to the compiler command line for sources in the current directory and below.
Basically the same as @ronkot's answer. But don't need add_subdirectory
for certain directory, using set_source_files_properties
with file(GLOB_RECURSE ...)
also works.
file(GLOB_RECURSE SRC_DIR "SRC_DIR/*.c" "SRC_DIR/*.h")
set_source_files_properties(
${SRC_DIR}
PROPERTIES
COMPILE_FLAGS "-w"
)
Expanding on @ronkot answer, the recommended target-based approach would be:
target_compile_options(your_target SCOPE compiler-warning-options)
Where SCOPE
is PUBLIC|INTERFACE|PRIVATE
, and compiler-warning-options
are actual compiler warning options, such as -Wall
. See cmake's docs for more info.
In general, prefer a target-based approach with modern CMake (3.0+) rather than a directory-based approach.
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