I am interested in getting the GNU Radio ports (gnuradio-*) updated to the
latest version. (Relevant ticket: <https://trac.macports.org/ticket/31475>. The
maintainer has acknowledged the problem but no work has been done for 11
months.) I have not seriously attempted to work on portfiles before.
GNU Radio 3.6.* has switched exclusively to a CMake-based build system. For the
most part, I have been able to simply apply the cmake PortGroup and modify the
configuration parameters to CMake style.
However, GNU Radio also insists that the build directory be different from the
source directory; the CMakeLists.txt file contains:
if(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
message(FATAL_ERROR "Prevented in-tree build. This is bad practice.")
endif(${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_BINARY_DIR})
I could of course patch out this condition, but that seems unnecessarily
fragile if it even works. How can I tell MacPorts to use distinct source and
build directories for a CMake-based port?
The official build instructions are to do
(in gnuradio source)
mkdir build
cd build
cmake ../
make
but since MacPorts takes care of these commands via its own infrastructure I
don't know where to "just" insert a cd command and tweak the pathnames.
--
Kevin Reid <http://switchb.org/kpreid/>
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