I build my own packages with poudriere. I recently globally added the clang `-enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang` flag and that broke `audio/linux-c7-alsa-plugins-oss` from building. The other 419 packages I build had no problem. The error is: ``` checking for gcc... gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... Segmentation fault (core dumped) configure: error: in `/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work/32/alsa-plugins-1.1.6': configure: error: cannot run C compiled programs. If you meant to cross compile, use `--host'. See `config.log' for more details *** Error code 77 Stop. make: stopped in /usr/ports/audio/linux-c7-alsa-plugins-oss ``` The `-enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang` flag has a dubious name I agree, but that's only because FreeBSD 13.2's clang 14 is rather old. In newer clang the flag was promoted from experimental to fully legit and is now named `-ftrivial-auto-var-init=zero`. See https://discourse.llvm.org/t/making-ftrivial-auto-var-init-zero-a-first-class-option/55143 My reason for using the flag is the same as others: security. Android, Chrome OS, Windows, Apple, and others use this in production builds too. From the error output, I would guess that something is building and running a C program to test something, and that program is crashing.
(In reply to Sean McBride from comment #0) What does config.log say?
Fernando, thanks for your reply. I'm just headed on vacation, but will retry and get that log file in 3 weeks.
So I re-enabled that flag but the build error didn't come back until a week or so later (maybe because the port and its dependencies didn't change recently?). Anyway, here is the detail that gets emailed to me by poudriere: Maintainer: emulation@FreeBSD.org Last committer: @FreeBSD.org Ident: Makefile ident: Log URL: https://nemesis.rogue-research.com//data/amd64-13-2-default/2023-12-25_03h00m06s/logs/linux-c7-alsa-plugins-oss-1.1.6_3.log Build URL: https://nemesis.rogue-research.com//build.html?mastername=amd64-13-2-default&build=2023-12-25_03h00m06s Log: =>> Building audio/linux-c7-alsa-plugins-oss build started at Mon Dec 25 08:58:18 EST 2023 port directory: /usr/ports/audio/linux-c7-alsa-plugins-oss package name: linux-c7-alsa-plugins-oss-1.1.6_3 building for: FreeBSD amd64-13-2-default-job-02 13.2-RELEASE-p9 FreeBSD 13.2-RELEASE-p9 amd64 maintained by: emulation@FreeBSD.org Makefile ident: Poudriere version: 3.3.7_4 Host OSVERSION: 1302001 Jail OSVERSION: 1302001 Job Id: 02 ---Begin Environment--- SHELL=/bin/csh OSVERSION=1302001 UNAME_v=FreeBSD 13.2-RELEASE-p9 UNAME_r=13.2-RELEASE-p9 BLOCKSIZE=K MAIL=/var/mail/root MM_CHARSET=UTF-8 LANG=C.UTF-8 STATUS=1 HOME=/root PATH=/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin LOCALBASE=/usr/local USER=root LIBEXECPREFIX=/usr/local/libexec/poudriere POUDRIERE_VERSION=3.3.7_4 MASTERMNT=/usr/local/poudriere/data/.m/amd64-13-2-default/ref POUDRIERE_BUILD_TYPE=bulk PACKAGE_BUILDING=yes SAVED_TERM= GID=0 UID=0 PWD=/usr/local/poudriere/data/.m/amd64-13-2-default/ref/.p/pool P_PORTS_FEATURES=FLAVORS SELECTED_OPTIONS MASTERNAME=amd64-13-2-default SCRIPTPREFIX=/usr/local/share/poudriere OLDPWD=/usr/local/poudriere/data/.m/amd64-13-2-default/ref/.p SCRIPTPATH=/usr/local/share/poudriere/bulk.sh POUDRIEREPATH=/usr/local/bin/poudriere ---End Environment--- ---Begin Poudriere Port Flags/Env--- PORT_FLAGS= PKGENV= FLAVOR= DEPENDS_ARGS= MAKE_ARGS= ---End Poudriere Port Flags/Env--- ---Begin OPTIONS List--- ---End OPTIONS List--- --MAINTAINER-- emulation@FreeBSD.org --End MAINTAINER-- --CONFIGURE_ARGS-- --End CONFIGURE_ARGS-- --CONFIGURE_ENV-- MAKE=gmake PKG_CONFIG=pkgconf XDG_DATA_HOME=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work XDG_CONFIG_HOME=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work XDG_CACHE_HOME=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work/.cache HOME=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work TMPDIR="/tmp" PATH=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work/.bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin PKG_CONFIG_LIBDIR=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work/.pkgconfig:/usr/local/libdata/pkgconfig:/usr/local/share/pkgconfig:/usr/libdata/pkgconfig SHELL=/bin/sh CONFIG_SHELL=/bin/sh DEFAULT_AUTOCONF=2.71 --End CONFIGURE_ENV-- --MAKE_ENV-- XDG_DATA_HOME=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work XDG_CONFIG_HOME=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work XDG_CACHE_HOME=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work/.cache HOME=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work TMPDIR="/tmp" PATH=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work/.bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/local/sbin:/usr/local/bin:/root/bin PKG_CONFIG_LIBDIR=/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work/.pkgconfig:/usr/local/libdata/pkgconfig:/usr/local/share/pkgconfig:/usr/libdata/pkgconfig MK_DEBUG_FILES=no MK_KERNEL_SYMBOLS=no SHELL=/bin/sh NO_LINT=YES DEFAULT_AUTOCONF=2.71 PREFIX=/compat/linux LOCALBASE=/usr/local CC="cc" CFLAGS="-O2 -pipe -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang --sysroot=/compat/linux -fstack-protector-strong -fno-strict-aliasing " CPP="cpp" CPPFLAGS="-DFREEBSD_OSS -DFREEBSD_OSS_USE_IO_PTR" LDFLAGS=" -fstack-protector-strong " LIBS="" CXX="c++" CXXFLAGS="-O2 -pipe -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang --sysroot=/compat/linux -fstack-protector-strong -fno-strict-aliasing -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang " MANPREFIX="/compat/linux" BSD_INSTALL_PROGRAM="install -s -m 555" BSD_INSTALL_LIB="install -s -m 0644" BSD_INSTALL_SCRIPT="install -m 555" BSD_INSTALL_DATA="install -m 0644" BSD_INSTALL_MAN="install -m 444" --End MAKE_ENV-- --PLIST_SUB-- OSREL=13.2 PREFIX=%D LOCALBASE=/usr/local RESETPREFIX=/compat/linux LIB32DIR=lib DOCSDIR="usr/share/doc/alsa-plugins-1.1.6" EXAMPLESDIR="share/examples/alsa-plugins" DATADIR="usr/share/alsa-plugins" WWWDIR="www/alsa-plugins" ETCDIR="etc/alsa-plugins" --End PLIST_SUB-- --SUB_LIST-- PREFIX=/compat/linux LOCALBASE=/usr/local DATADIR=/compat/linux/usr/share/alsa-plugins DOCSDIR=/compat/linux/usr/share/doc/alsa-plugins-1.1.6 EXAMPLESDIR=/compat/linux/share/examples/alsa-plugins WWWDIR=/compat/linux/www/alsa-plugins ETCDIR=/compat/linux/etc/alsa-plugins --End SUB_LIST-- ---Begin make.conf--- USE_PACKAGE_DEPENDS=yes BATCH=yes WRKDIRPREFIX=/wrkdirs PORTSDIR=/usr/ports PACKAGES=/packages DISTDIR=/distfiles FORCE_PACKAGE=yes PACKAGE_BUILDING=yes PACKAGE_BUILDING_FLAVORS=yes #### /usr/local/etc/poudriere.d/make.conf #### OPTIONS_SET = LDAP LDAPS LDAP-SASL AUTHNZ_LDAP OPTIONS_UNSET += EXAMPLES TEST TESTS X11 GUI CFLAGS += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang CXXFLAGS += -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang #### Misc Poudriere #### .include "/etc/make.conf.ports_env" DISABLE_MAKE_JOBS=poudriere ---End make.conf--- --Resource limits-- cpu time (seconds, -t) unlimited file size (512-blocks, -f) unlimited data seg size (kbytes, -d) 33554432 stack size (kbytes, -s) 524288 core file size (512-blocks, -c) unlimited max memory size (kbytes, -m) unlimited locked memory (kbytes, -l) unlimited max user processes (-u) 34304 open files (-n) 1024 virtual mem size (kbytes, -v) unlimited swap limit (kbytes, -w) unlimited socket buffer size (bytes, -b) unlimited pseudo-terminals (-p) unlimited kqueues (-k) unlimited umtx shared locks (-o) unlimited --End resource limits-- =======================<phase: check-sanity >============================ ===> License LGPL21+ accepted by the user =========================================================================== =======================<phase: pkg-depends >============================ ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on file: /usr/local/sbin/pkg - not found ===> Installing existing package /packages/All/pkg-1.20.9.pkg [amd64-13-2-default-job-02] Installing pkg-1.20.9... [amd64-13-2-default-job-02] Extracting pkg-1.20.9: .......... done ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on file: /usr/local/sbin/pkg - found ===> Returning to build of linux-c7-alsa-plugins-oss-1.1.6_3 =========================================================================== =======================<phase: fetch-depends >============================ =========================================================================== =======================<phase: fetch >============================ ===> License LGPL21+ accepted by the user ===> Fetching all distfiles required by linux-c7-alsa-plugins-oss-1.1.6_3 for building =========================================================================== =======================<phase: checksum >============================ ===> License LGPL21+ accepted by the user ===> Fetching all distfiles required by linux-c7-alsa-plugins-oss-1.1.6_3 for building => SHA256 Checksum OK for centos/alsa-plugins-1.1.6-1.el7.src.rpm. =========================================================================== =======================<phase: extract-depends>============================ =========================================================================== =======================<phase: extract >============================ ===> License LGPL21+ accepted by the user ===> Fetching all distfiles required by linux-c7-alsa-plugins-oss-1.1.6_3 for building ===> Extracting for linux-c7-alsa-plugins-oss-1.1.6_3 => SHA256 Checksum OK for centos/alsa-plugins-1.1.6-1.el7.src.rpm. =========================================================================== =======================<phase: patch-depends >============================ =========================================================================== =======================<phase: patch >============================ ===> Patching for linux-c7-alsa-plugins-oss-1.1.6_3 =========================================================================== =======================<phase: build-depends >============================ ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: gmake>=4.3 - not found ===> Installing existing package /packages/All/gmake-4.3_2.pkg [amd64-13-2-default-job-02] Installing gmake-4.3_2... [amd64-13-2-default-job-02] `-- Installing gettext-runtime-0.22.3... [amd64-13-2-default-job-02] | `-- Installing indexinfo-0.3.1... [amd64-13-2-default-job-02] | `-- Extracting indexinfo-0.3.1: .... done [amd64-13-2-default-job-02] `-- Extracting gettext-runtime-0.22.3: .......... done [amd64-13-2-default-job-02] Extracting gmake-4.3_2: .......... done ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: gmake>=4.3 - found ===> Returning to build of linux-c7-alsa-plugins-oss-1.1.6_3 ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on executable: libtool - not found ===> Installing existing package /packages/All/libtool-2.4.7_1.pkg [amd64-13-2-default-job-02] Installing libtool-2.4.7_1... [amd64-13-2-default-job-02] `-- Installing m4-1.4.19,1... [amd64-13-2-default-job-02] `-- Extracting m4-1.4.19,1: .......... done [amd64-13-2-default-job-02] Extracting libtool-2.4.7_1: .......... done ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on executable: libtool - found ===> Returning to build of linux-c7-alsa-plugins-oss-1.1.6_3 ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: linux-c7-alsa-lib>0 - not found ===> Installing existing package /packages/All/linux-c7-alsa-lib-1.1.8.pkg [amd64-13-2-default-job-02] Installing linux-c7-alsa-lib-1.1.8... [amd64-13-2-default-job-02] `-- Installing alsa-lib-1.2.10... [amd64-13-2-default-job-02] `-- Extracting alsa-lib-1.2.10: .......... done [amd64-13-2-default-job-02] `-- Installing linux_base-c7-7.9.2009_1... [amd64-13-2-default-job-02] `-- Extracting linux_base-c7-7.9.2009_1: .......... done [amd64-13-2-default-job-02] Extracting linux-c7-alsa-lib-1.1.8: .......... done ===== Message from linux_base-c7-7.9.2009_1: -- Some programs need linprocfs mounted on /compat/linux/proc. Add the following line to /etc/fstab: linprocfs /compat/linux/proc linprocfs rw 0 0 Then run "mount /compat/linux/proc". Some programs need linsysfs mounted on /compat/linux/sys. Add the following line to /etc/fstab: linsysfs /compat/linux/sys linsysfs rw 0 0 Then run "mount /compat/linux/sys". Some programs need tmpfs mounted on /compat/linux/dev/shm. Add the following line to /etc/fstab: tmpfs /compat/linux/dev/shm tmpfs rw,mode=1777 0 0 Then run "mount /compat/linux/dev/shm". ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: linux-c7-alsa-lib>0 - found ===> Returning to build of linux-c7-alsa-plugins-oss-1.1.6_3 ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: linux-c7-alsa-lib-devel>0 - not found ===> Installing existing package /packages/All/linux-c7-alsa-lib-devel-1.1.8.pkg [amd64-13-2-default-job-02] Installing linux-c7-alsa-lib-devel-1.1.8... [amd64-13-2-default-job-02] Extracting linux-c7-alsa-lib-devel-1.1.8: .......... done ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: linux-c7-alsa-lib-devel>0 - found ===> Returning to build of linux-c7-alsa-plugins-oss-1.1.6_3 ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: linux_base-c7>=7.6.1810_7 - found ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: linux-c7-devtools>0 - not found ===> Installing existing package /packages/All/linux-c7-devtools-7.9.2009_1.pkg [amd64-13-2-default-job-02] Installing linux-c7-devtools-7.9.2009_1... [amd64-13-2-default-job-02] `-- Installing linux-c7-libgfortran-4.8.5_6... [amd64-13-2-default-job-02] `-- Extracting linux-c7-libgfortran-4.8.5_6: .... done [amd64-13-2-default-job-02] Extracting linux-c7-devtools-7.9.2009_1: .......... done ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: linux-c7-devtools>0 - found ===> Returning to build of linux-c7-alsa-plugins-oss-1.1.6_3 ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: pkgconf>=1.3.0_1 - not found ===> Installing existing package /packages/All/pkgconf-2.0.3_1,1.pkg [amd64-13-2-default-job-02] Installing pkgconf-2.0.3_1,1... [amd64-13-2-default-job-02] Extracting pkgconf-2.0.3_1,1: .......... done ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: pkgconf>=1.3.0_1 - found ===> Returning to build of linux-c7-alsa-plugins-oss-1.1.6_3 ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: autoconf>=2.71 - not found ===> Installing existing package /packages/All/autoconf-2.71.pkg [amd64-13-2-default-job-02] Installing autoconf-2.71... [amd64-13-2-default-job-02] `-- Installing autoconf-switch-20220527... [amd64-13-2-default-job-02] `-- Extracting autoconf-switch-20220527: .......... done [amd64-13-2-default-job-02] `-- Installing perl5-5.36.3_1... [amd64-13-2-default-job-02] `-- Extracting perl5-5.36.3_1: .......... done [amd64-13-2-default-job-02] Extracting autoconf-2.71: .......... done ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: autoconf>=2.71 - found ===> Returning to build of linux-c7-alsa-plugins-oss-1.1.6_3 ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: automake>=1.16.5 - not found ===> Installing existing package /packages/All/automake-1.16.5.pkg [amd64-13-2-default-job-02] Installing automake-1.16.5... [amd64-13-2-default-job-02] Extracting automake-1.16.5: .......... done ===> linux-c7-alsa-plugins-oss-1.1.6_3 depends on package: automake>=1.16.5 - found ===> Returning to build of linux-c7-alsa-plugins-oss-1.1.6_3 =========================================================================== =======================<phase: lib-depends >============================ =========================================================================== =======================<phase: configure >============================ ===> Configuring for linux-c7-alsa-plugins-oss-1.1.6_3 libtoolize: putting auxiliary files in '.'. libtoolize: copying file './ltmain.sh' libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'. libtoolize: copying file 'm4/libtool.m4' libtoolize: copying file 'm4/ltoptions.m4' libtoolize: copying file 'm4/ltsugar.m4' libtoolize: copying file 'm4/ltversion.m4' libtoolize: copying file 'm4/lt~obsolete.m4' configure.ac:14: warning: The macro `AM_PROG_LIBTOOL' is obsolete. configure.ac:14: You should run autoupdate. m4/libtool.m4:101: AM_PROG_LIBTOOL is expanded from... configure.ac:14: the top level configure.ac:15: warning: The macro `AC_HEADER_STDC' is obsolete. configure.ac:15: You should run autoupdate. ./lib/autoconf/headers.m4:704: AC_HEADER_STDC is expanded from... configure.ac:15: the top level configure.ac:17: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body ./lib/autoconf/lang.m4:199: AC_LANG_CONFTEST is expanded from... ./lib/autoconf/general.m4:2894: _AC_LINK_IFELSE is expanded from... ./lib/autoconf/general.m4:2911: AC_LINK_IFELSE is expanded from... lib/m4sugar/m4sh.m4:692: _AS_IF_ELSE is expanded from... lib/m4sugar/m4sh.m4:699: AS_IF is expanded from... ./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from... ./lib/autoconf/general.m4:2270: AC_CACHE_CHECK is expanded from... m4/attributes.m4:87: CC_CHECK_LDFLAGS is expanded from... m4/attributes.m4:104: CC_NOUNDEFINED is expanded from... configure.ac:17: the top level configure.ac:21: warning: The macro `AC_ERROR' is obsolete. configure.ac:21: You should run autoupdate. ./lib/autoconf/oldnames.m4:34: AC_ERROR is expanded from... configure.ac:21: the top level configure.ac:88: warning: The macro `AC_ERROR' is obsolete. configure.ac:88: You should run autoupdate. ./lib/autoconf/oldnames.m4:34: AC_ERROR is expanded from... configure.ac:88: the top level configure.ac:239: warning: AC_OUTPUT should be used without arguments. configure.ac:239: You should run autoupdate. configure.ac:11: installing './compile' configure.ac:3: installing './missing' a52/Makefile.am: installing './depcomp' checking for a BSD-compatible install... /compat/linux/usr/bin/install -c checking whether build environment is sane... yes checking for a race-free mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether /usr/local/bin/gmake sets $(MAKE)... yes checking whether /usr/local/bin/gmake supports nested variables... yes checking whether to enable maintainer-specific portions of Makefiles... yes checking for gcc... gcc checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... Segmentation fault (core dumped) configure: error: in `/wrkdirs/usr/ports/audio/linux-c7-alsa-plugins-oss/work/32/alsa-plugins-1.1.6': configure: error: cannot run C compiled programs. If you meant to cross compile, use `--host'. See `config.log' for more details *** Error code 77 Stop. make: stopped in /usr/ports/audio/linux-c7-alsa-plugins-oss
audio/linux-c7-alsa-plugins-oss is built using Linux gcc, not FreeBSD clang. You'll have to exclude the port using something like: .if empty(.CURDIR:M*/audio/linux-c7-alsa-plugins-oss) CFLAGS+=... .endif
Tijl, thanks for your reply! So it's simply that gcc doesn't know/accept the -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang flag, which makes sense. Why does it compile with gcc? I've not encountered a lot of C/C++ code these days that doesn't compile with both gcc and clang...
(In reply to Sean McBride from comment #5) This port is essentially building a Linux package, not a FreeBSD package. So it uses a Linux compiler and the only one we have is gcc.
Tijl, I guess what I'm asking though is: does it really actually require gcc? Clang fails to build it? Even the linux kernel can be built with Clang, and in fact Android and ChromeOS ship with such a kernel: https://www.kernel.org/doc/html/latest/kbuild/llvm.html
(In reply to Sean McBride from comment #7) We don't have Linux clang anywhere in the ports tree.
Wait, is this thing being cross-compiled to run in the linuxulator?
(In reply to Sean McBride from comment #9) Yes.
(In reply to Tijl Coosemans from comment #4) Your conditionalization suggestion worked, thanks! But looks like I need to generalize it to other ports too, like www/linux-c7-qtwebkit. What language/syntax is that? Does it allow wildcards like this? ``` .if empty(.CURDIR:M*/linux-c7-*) CFLAGS+=... .endif ```