file(TO_CMAKE_PATH "$ENV{ANT_DIR}" ANT_DIR_ENV_PATH)
file(TO_CMAKE_PATH "$ENV{ProgramFiles}" ProgramFiles_ENV_PATH)
if(CMAKE_HOST_WIN32)
set(ANT_NAME ant.bat)
else()
set(ANT_NAME ant)
endif()
find_host_program(ANT_EXECUTABLE NAMES ${ANT_NAME}
PATHS "${ANT_DIR_ENV_PATH}/bin" "${ProgramFiles_ENV_PATH}/apache-ant/bin"
NO_DEFAULT_PATH
)
find_host_program(ANT_EXECUTABLE NAMES ${ANT_NAME})
if(ANT_EXECUTABLE)
execute_process(COMMAND ${ANT_EXECUTABLE} -version
RESULT_VARIABLE ANT_ERROR_LEVEL
OUTPUT_VARIABLE ANT_VERSION_FULL
OUTPUT_STRIP_TRAILING_WHITESPACE)
if (ANT_ERROR_LEVEL)
unset(ANT_EXECUTABLE)
unset(ANT_EXECUTABLE CACHE)
else()
string(REGEX MATCH "[0-9]+.[0-9]+.[0-9]+" ANT_VERSION "${ANT_VERSION_FULL}")
set(ANT_VERSION "${ANT_VERSION}" CACHE INTERNAL "Detected ant vesion")
message(STATUS "Found apache ant ${ANT_VERSION}: ${ANT_EXECUTABLE}")
endif()
endif()-
Misty De Meo authored
Mac OS X 10.7 and newer don't come with Java installed. They do include some stub binaries, which ask the user if they want to install Java when run. OpenCV's cmake script just checks for the existence of an ant binary and assumes that Java's available if ant is. As a result, cmake will configure the build to use Java and it will fail once it tries to compile the Java bindings. This fixes the issue by checking for the exit status of `ant -version` - it exits 0 if Java is installed, or 1 otherwise.
a423afdd