Hi all,
I did't found info how cmake internally handles CFLAGS environment
variable, but I know that cmake picks it up from environment and seems this
removes link directories from linking flags added by link_directories()
command.
For example. I'm using custom sysroot, to build my app and I run cmake with
following command:
export CFLAGS="--sysroot=/sysroot/"
cmake ..
My cmake file is:
# GStreamer_LIBRARY_DIRS is set by pkg_check_modules()
link_directories(${GStreamer_LIBRARY_DIRS})
get_directory_property(LINK_DIRS LINK_DIRECTORIES)
message("LINK_DIRS: ${LINK_DIRS}")
add_executable(myapp main.c)
target_link_libraries(myapp ${GStreamer_LIBRARIES})
When CFLAGS isn't specified, then file src/CMakeFiles/myapp.dir/link.txt
contains -L/sysroot/usr/lib and -Wl,-rpath,/sysroot/usr/lib flags as
expected, but when I add CFLAGS to environment, then -L and -Wl,-rpath are
disappearing from linker options.
Could someone to confirm, is this expected behavior?
PS: Regardless of CFLAGS specified in command line or not, message() always
prints: LINK_DIRS: /sysroot/usr/lib, so internally cmake sets this property.
Thanks!
Alexander
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