Unrecognized option: --version usage: gnustep-config argument gnustep-config --help for more help

usage: gnustep-config [option] This program prints information on the current gnustep installation. [option] determines what is printed. Here is the list of options: --variable=xxx: prints the value of the specified variable. Here is a list of possible variables: --variable=CC --variable=CPP --variable=CXX --variable=OBJCXX --variable=LDFLAGS --variable=GNUMAKE --variable=GNUSTEP_MAKEFILES --variable=GNUSTEP_USER_DEFAULTS_DIR --variable=GNUSTEP_HOST --variable=GNUSTEP_HOST_CPU --variable=GNUSTEP_HOST_VENDOR --variable=GNUSTEP_HOST_OS --variable=GNUSTEP_IS_FLATTENED --variable=GNUSTEP_xxx_APPS --variable=GNUSTEP_xxx_TOOLS --variable=GNUSTEP_xxx_LIBRARY --variable=GNUSTEP_xxx_HEADERS --variable=GNUSTEP_xxx_LIBRARIES --variable=GNUSTEP_xxx_DOC --variable=GNUSTEP_xxx_DOC_MAN --variable=GNUSTEP_xxx_DOC_INFO where 'xxx' could be any of 'SYSTEM', 'NETWORK', 'LOCAL' and 'USER'. For example, you could get the value of GNUSTEP_SYSTEM_TOOLS to find where command-line system programs are located on this system. --debug-flags: prints all the flags required to compile an ObjC file for debug --objc-flags: prints all the flags required to compile an ObjC file --objc-libs: prints all the flags required to link a pure ObjC program (no foundation/gui) --base-libs: prints all the flags required to link a command-line ObjC program (no gui) --gui-libs: prints all the flags required to link a GUI ObjC program --installation-domain-for=xxx: prints the value of the default installation domain for the package xxx. The result could be 'SYSTEM', 'NETWORK', 'LOCAL' or 'USER'. This command always returns LOCAL unless the system has been personalized using an installation-domains.conf file.