make -j8 -l8 WAF_MAKE=1 /usr/bin/python2.7 ./buildtools/bin/waf build Waf: Entering directory `/var/tmp/portage/net-fs/samba-4.5.10/work/samba-4.5.10-abi_x86_32.x86/bin' Selected system MIT krb5 libraries, Heimdal use is disabled [...] but then only a single source file is compiled at a time. waf-utils.eclass contains waf-utils_src_compile() { debug-print-function ${FUNCNAME} "$@" local _mywafconfig [[ "${WAF_VERBOSE}" ]] && _mywafconfig="--verbose" local jobs="--jobs=$(makeopts_jobs)" echo "\"${WAF_BINARY}\" build ${_mywafconfig} ${jobs}" "${WAF_BINARY}" ${_mywafconfig} ${jobs} || die "build failed" } which looks like somehow ${jobs} is ending up empty?
I think it's because waf-utils's src_compile does not get called at all. multilib-minimal.ebuild calls 'multilib_src_compile()' / 'default_src_compile()' which 'emake' for 'default_src_compile()' (samba has a Makefile that calls 'waf build') I suspect the fix is as simple as defining 'multilib_src_compile': --- a/net-fs/samba/samba-4.5.10.ebuild +++ b/net-fs/samba/samba-4.5.10.ebuild @@ -213,2 +213,6 @@ multilib_src_configure() { +multilib_src_compile() { + waf-utils_src_compile +} + multilib_src_install() { With that I get: * abi_x86_64.amd64: running multilib-minimal_abi_src_compile "/dev/shm/portage/net-fs/samba-4.5.10/work/samba-4.5.10/buildtools/bin/waf" build --verbose --jobs=8 Thanks for filing a bug. It always bothered that samba now builds much slower but I never looked at why.
Thank you. Committed as commit 602a5ac8c27d4cbe020fc872e25c8166ba1ff284 Author: Matt Turner <mattst88@gentoo.org> Date: Fri Jun 23 14:51:19 2017 -0700 net-fs/samba: Use waf-utils_src_compile in order to get parallel builds
