Since xpra 1.0.x the build fails with an error related to incorrect processing of CFLAGS (as it seems). My CFLAGS are: "-O2 -pipe -fomit-frame-pointer -march=haswell -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3 -mno-sse4a -mcx16 -msahf -mmovbe -maes -mno-sha -mpclmul -mpopcnt -mabm -mno-lwp -mfma -mno-fma4 -mno-xop -mbmi -mbmi2 -mno-tbm -mavx -mavx2 -msse4.2 -msse4.1 -mlzcnt -mno-rtm -mno-hle -mrdrnd -mf16c -mfsgsbase -mno-rdseed -mno-prfchw -mno-adx -mfxsr -mxsave -mxsaveopt -mno-avx512f -mno-avx512er -mno-avx512cd -mno-avx512pf -mno-prefetchwt1 --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=8192" (Which is the same as -O2 -march=native, so no -fomg-optimize ;-)) The relevant build output is: x86_64-pc-linux-gnu-gcc -shared -Wl,-O1 -Wl,--as-needed -O2 -pipe -fomit-frame-pointer -march=haswell -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3 -mno-sse4a -mcx16 -msahf -mmovbe -maes -mno-sha -mpclmul -mpopcnt -mabm -mno-lwp -mfma -mno-fma4 -mno-xop -mbmi -mbmi2 -mno-tbm -mavx -mavx2 -msse4.2 -msse4.1 -mlzcnt -mno-rtm -mno-hle -mrdrnd -mf16c -mfsgsbase -mno-rdseed -mno-prfchw -mno-adx -mfxsr -mxsave -mxsaveopt -mno-avx512f -mno-avx512er -mno-avx512cd -mno-avx512pf -mno-prefetchwt1 --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=8192 -fno-strict-aliasing /var/tmp/portage/x11-wm/xpra-1.0.1/work/xpra-1.0.1-python2_7/temp.linux-x86_64-2.7/xpra/x11/bindings/wait_for_x_server.o -L/usr/lib64 -lX11 -lpython2.7 -o /var/tmp/portage/x11-wm/xpra-1.0.1/work/xpra-1.0.1-python2_7/lib/xpra/x11/bindings/wait_for_x_server.so -O2 -pipe -fomit-frame-pointer -march=haswell -mmmx -mno-3dnow -msse -msse2 -msse3 -mssse3 -mno-sse4a -mcx16 -msahf -mmovbe -maes -mno-sha -mpclmul -mpopcnt -mabm -mno-lwp -mfma -mno-fma4 -mno-xop -mbmi -mbmi2 -mno-tbm -mavx -mavx2 -msse4.2 -msse4.1 -mlzcnt -mno-rtm -mno-hle -mrdrnd -mf16c -mfsgsbase -mno-rdseed -mno-prfchw -mno-adx -mfxsr -mxsave -mxsaveopt -mno-avx512f -mno-avx512er -mno-avx512cd -mno-avx512pf -mno-prefetchwt1 --param l1-cache-size=32 l1-cache-line-size=64 l2-cache-size=8192 -fno-strict-aliasing -Wl,-O1 -Wl,--as-needed -Wall x86_64-pc-linux-gnu-gcc: error: l1-cache-line-size=64: No such file or directory x86_64-pc-linux-gnu-gcc: error: l2-cache-size=8192: No such file or directory error: command 'x86_64-pc-linux-gnu-gcc' failed with exit status 1
Hit the same bug, it's due to their 'advanced' filtering in setup.py beginning in line 699. It removes duplicates from the CFLAGS, thus removing the multiple --param entries.
commit 64be6ff3b3f656796f82582e39c7dbd164094c49 Author: Michael Weber <xmw@gentoo.org> Date: Wed Feb 1 18:32:46 2017 +0100 x11-wm/xpra: do not interfere with '--param key=value' gcc args (bug 607776, thanks Fabian Henze and Hendrik v. Raven). Package-Manager: Portage-2.3.3, Repoman-2.3.1
