Building Python module miniupnpc fails with "file in wrong format" error

Alfonso Crawford

I need to have my python have access to UPnP, and have been working with miniupnpc to make that happen. Installing via pip has a vague error message; so I expanded the storage of my Onion Omega2, installed make and gcc, and attempted to build the package myself. When running python setup.py build_ext, I get the following output (slightly formatted for easy reading):

[NOTE: I've tried this before, so some of the build process is already done. I don't know how to force a full rebuild.]

running build_ext
make: 'libminiupnpc.a' is up to date.
building 'miniupnpc' extension
creating build/temp.linux-mips-2.7
	mipsel-openwrt-linux-musl-gcc
		-fno-strict-aliasing
		-Os
		-pipe
		-mno-branch-likely
		-mips32r2
		-mtune=24kc
		-fno-caller-saves
		-fno-plt
		-fhonour-copts
		-Wno-error=unused-but-set-variable
		-Wno-error=unused-result
		-msoft-float
		-mno-mips16
		-mno-interlink-mips16
		-iremap /root/source/build_dir/target-mipsel_24kc_musl-1.1.16/Python-2.7.14:Python-2.7.14
		-Wformat
		-Werror=format-security
		-fstack-protector
		-D_FORTIFY_SOURCE=1
		-Wl,-z,now
		-Wl,-z,relro
		-DNDEBUG
		-fno-inline
		-DNDEBUG
		-Os
		-pipe
		-mno-branch-likely
		-mips32r2
		-mtune=24kc
		-fno-caller-saves
		-fno-plt
		-fhonour-copts
		-Wno-error=unused-but-set-variable
		-Wno-error=unused-result
		-msoft-float
		-mno-mips16
		-mno-interlink-mips16
		-iremap /root/source/build_dir/target-mipsel_24kc_musl-1.1.16/Python-2.7.14:Python-2.7.14
		-Wformat
		-Werror=format-security
		-fstack-protector
		-D_FORTIFY_SOURCE=1
		-Wl,-z,now
		-Wl,-z,relro
		-fPIC
		-I/usr/include/python2.7
		-c miniupnpcmodule.c
		-o build/temp.linux-mips-2.7/miniupnpcmodule.o
creating build/lib.linux-mips-2.7
	mipsel-openwrt-linux-musl-gcc
		-shared
		-L/root/source/staging_dir/target-mipsel_24kc_musl-1.1.16/usr/lib
		-L/root/source/staging_dir/target-mipsel_24kc_musl-1.1.16/lib
		-L/root/source/staging_dir/toolchain-mipsel_24kc_gcc-5.4.0_musl-1.1.16/usr/lib
		-L/root/source/staging_dir/toolchain-mipsel_24kc_gcc-5.4.0_musl-1.1.16/lib
		-znow
		-zrelro
		-L/root/source/build_dir/target-mipsel_24kc_musl-1.1.16/Python-2.7.14 build/temp.linux-mips-2.7/miniupnpcmodule.o libminiupnpc.a
		-L/usr/lib
		-lpython2.7
		-o build/lib.linux-mips-2.7/miniupnpc.so
/usr/bin/ld: libminiupnpc.a(miniupnpc.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: libminiupnpc.a(miniupnpc.o): Relocations in generic ELF (EM: 62)
/usr/bin/ld: libminiupnpc.a(miniupnpc.o): Relocations in generic ELF (EM: 62)
libminiupnpc.a: error adding symbols: File in wrong format
collect2: error: ld returned 1 exit status
error: command 'mipsel-openwrt-linux-musl-gcc' failed with exit status 1

I'm trying to find out how to solve this problem in ld, but nothing is coming up in my searches. Has this been a problem for anyone else compiling Python packages locally on the Onion? What is the right format for the system? Is there a way to force the build to use the format OnionOS wants?