Trying to debug my own reported bug https://bugs.gentoo.org/show_bug.cgi?id=604556 I thought I might try to compile pavuk without threads. The package does offer the --disable-threads configure option. I thus added 'threads' to the IUSE variable: IUSE="debug gtk hammer ipv6 nls pcre profile ssl threads" and replaced --enable-threads with $(use_enable threads) inside the myeconfargs array in the ebuild. I also added '-threads' to the USE flags for pavuk in my /etc/portage/package.use. I then re-merged as usual (I had of course already put the ebuild in a local overlay). I saw that the package got the right configure options, i.e. it called configure with '--disable-threads', among others. However...it kept checking for pthreads: checking pthread.h usability... yes checking pthread.h presence... yes checking for pthread.h... yes ... checking for pthread_equal... yes checking for pthread_sigmask... no and then told me that checking for gtk configuration using pkg-config script ... ... gtk CFLAGS=-pthread -I/usr/include/gtk-2.0...etc. and: CPPFLAGS = -pthread -I/usr/include/gtk-2.0...etc. while, at the same time, there was no value for 'multithreading support' in the 'PAVUK options' summary: multithreading support: NOTE: My CFLAGS variable in /etc/portage/make.conf does NOT contain '-pthread'! As soon as 'make' started, it used threads support: i686-pc-linux-gnu-gcc -std=gnu99 -DHAVE_CONFIG_H -I. -I.. -pthread -I/usr/include/gtk-2.0...etc. which of course broke compilation with: ainterface.c: In function 'absi_restart_as_thread': ainterface.c:269:40: error: '_config_struct_t' has no member named 'thrnr_key' VERIFY(0 == pthread_setspecific(cfg.thrnr_key, cast_int2voidptr(thrnr))); Desired behaviour =========== It should be possible to be able to compile pavuk without thread support, preferably with the '-threads' USE flag as above. The CFLAGS and CPPFLAGS variables should not be 'tainted' with '-pthread', if no threading support is configured. Some info ====== Portage 2.2.28 (python 3.4.3-final-0, hardened/linux/x86, gcc-4.9.3, glibc-2.22-r4, 3.18.25-gentoo-r1 i686) ================================================================= System uname: Linux-3.18.25-gentoo-r1-i686-Intel-R-_Pentium-R-_4_CPU_3.40GHz-with-gentoo-2.2 KiB Mem: XXX total, 156540 free KiB Swap: YYY total, 2251108 free Timestamp of repository gentoo: Mon, 10 Oct 2016 14:15:01 +0000 sh bash 4.3_p48 ld GNU ld (Gentoo 2.25.1 p1.1) 2.25.1 app-shells/bash: 4.3_p48::gentoo dev-java/java-config: 2.2.0-r3::gentoo dev-lang/perl: 5.22.2::gentoo dev-lang/python: 2.7.10-r1::gentoo, 3.4.3-r1::gentoo dev-util/cmake: 3.5.2-r1::gentoo dev-util/pkgconfig: 0.28-r2::gentoo sys-apps/baselayout: 2.2::gentoo sys-apps/openrc: 0.19.1::gentoo sys-apps/sandbox: 2.10-r2::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.4_p6-r2::gentoo, 1.5-r2::gentoo, 1.6.3-r2::gentoo, 1.7.9-r3::gentoo, 1.8.5-r5::gentoo, 1.9.6-r4::gentoo, 1.10.3-r1::gentoo, 1.11.6-r1::gentoo, 1.12.6::gentoo, 1.13.4::gentoo, 1.14.1::gentoo, 1.15::gentoo sys-devel/binutils: 2.24-r3::gentoo, 2.25.1-r1::gentoo sys-devel/gcc: 4.3.6-r1::gentoo, 4.4.7::gentoo, 4.8.5::gentoo, 4.9.3::gentoo sys-devel/gcc-config: 1.7.3::gentoo sys-devel/libtool: 2.4.6::gentoo sys-devel/make: 4.1-r1::gentoo sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers) sys-libs/glibc: 2.22-r4::gentoo
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