clang profile is not used clang's C preprocessor yet. I think better to use CPP of clang. clang-cpp is required to build system of FreeBSD safely. Please create a symbolic link. FYI, http://svnweb.freebsd.org/base?view=revision&revision=231079 https://wiki.freebsd.org/BuildingFreeBSDWithClang#Quickstart NOTE, When set CPP=clang-cpp to /etc/portage/make.conf, I found two problems at least.
Created attachment 354610 [details, diff] sample patch for clang-3.3.ebuild
Created attachment 354612 [details, diff] drop warning sample patch for toolchain-funcs.eclass $ clang-cpp -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__" clang: warning: argument unused during compilation: '-E' 4 2 1 $ clang-cpp -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__" 4 2 1 another way) $ clang-cpp -E -P -Qunused-arguments - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__" 4 2 1 FYI, $ clang -E -E -P - <<<"__GNUC__ __GNUC_MINOR__ __GNUC_PATCHLEVEL__" 4 2 1
Created attachment 354614 [details, diff] sample patch for kde4-base.eclass Problem occurs in package that checks the version of GCC. I think need to pass the version check in some way. [[ $(tc-getCPP) != clang* ]] && \ In this example, target clang-cpp and "clang -E" both.
(In reply to Yuta SATOH from comment #1) > Created attachment 354610 [details, diff] [details, diff] > sample patch for clang-3.3.ebuild this we should better either update gcc-config, add a clang-config, or install a 'clang system wide compiler' package that would also install the cc/c++/others symlinks
Is this still relevant?
(In reply to Michał Górny from comment #5) > Is this still relevant? sys-freebsd/* packages that contains RPCGEN_CPP= does not support CPP="clang -E". sys-freebsd/* packages using the preprocessor of clang requires clang-cpp to compile. e.g.) CPP="clang -E") # CPP="clang -E" MAKEOPTS=-j1 ebuild freebsd-usbin-11.0.ebuild clean compile ===> rpc.lockd (all) Warning: Object directory not changed from original /var/tmp/portage/sys-freebsd/freebsd-usbin-11.0/work/usr.sbin/rpc.lockd RPCGEN_CPP=clang\ -E rpcgen -L -C -m -o nlm_prot_svc.c /usr/include/rpcsvc/nlm_prot.x x86_64-gentoo-freebsd10.3-clang-3.8: warning: /usr/include/rpcsvc/nlm_prot.x: 'linker' input unused x86_64-gentoo-freebsd10.3-clang-3.8: warning: argument unused during compilation: '-C' x86_64-gentoo-freebsd10.3-clang-3.8: warning: argument unused during compilation: '-D RPC_SVC' echo rpc.lockd: /usr/lib/libc.a /usr/lib/librpcsvc.a >> .depend clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.kern.o -MTkern.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c kern.c -o kern.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.nlm_prot_svc.o -MTnlm_prot_svc.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c nlm_prot_svc.c -o nlm_prot_svc.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.lockd.o -MTlockd.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c lockd.c -o lockd.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.lock_proc.o -MTlock_proc.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c lock_proc.c -o lock_proc.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.lockd_lock.o -MTlockd_lock.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c lockd_lock.c -o lockd_lock.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -o rpc.lockd kern.o nlm_prot_svc.o lockd.o lock_proc.o lockd_lock.o -lrpcsvc lockd.o: In function `main': lockd.c:(.text+0x4a7): undefined reference to `nlm_prog_4' lockd.o: In function `complete_service': lockd.c:(.text+0x1441): undefined reference to `nlm_prog_0' lockd.c:(.text+0x1474): undefined reference to `nlm_prog_1' lockd.c:(.text+0x14a7): undefined reference to `nlm_prog_3' lockd.c:(.text+0x14da): undefined reference to `nlm_prog_4' x86_64-gentoo-freebsd10.3-clang-3.8: error: linker command failed with exit code 1 (use -v to see invocation) *** [rpc.lockd] Error code 1 make[1]: stopped in /var/tmp/portage/sys-freebsd/freebsd-usbin-11.0/work/usr.sbin/rpc.lockd 1 error CPP="clang-cpp") # ln -s clang /usr/bin/clang-cpp # CPP="clang-cpp" MAKEOPTS=-j1 ebuild freebsd-usbin-11.0.ebuild clean compile ===> rpc.lockd (all) Warning: Object directory not changed from original /var/tmp/portage/sys-freebsd/freebsd-usbin-11.0/work/usr.sbin/rpc.lockd RPCGEN_CPP=clang-cpp rpcgen -L -C -m -o nlm_prot_svc.c /usr/include/rpcsvc/nlm_prot.x echo rpc.lockd: /usr/lib/libc.a /usr/lib/librpcsvc.a >> .depend clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.kern.o -MTkern.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c kern.c -o kern.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.nlm_prot_svc.o -MTnlm_prot_svc.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c nlm_prot_svc.c -o nlm_prot_svc.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.lockd.o -MTlockd.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c lockd.c -o lockd.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.lock_proc.o -MTlock_proc.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c lock_proc.c -o lock_proc.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -MD -MF.depend.lockd_lock.o -MTlockd_lock.o -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -c lockd_lock.c -o lockd_lock.o clang -O2 -pipe -fno-strict-aliasing -I. -I/usr/include/rpcsvc -std=gnu99 -fstack-protector-strong -Wsystem-headers -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wno-uninitialized -Wno-pointer-sign -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-unused-local-typedef -Qunused-arguments -o rpc.lockd kern.o nlm_prot_svc.o lockd.o lock_proc.o lockd_lock.o -lrpcsvc gzip -cn rpc.lockd.8 > rpc.lockd.8.gz List of sources, including RPCGEN_CPP.) # grep -r RPCGEN_CPP * include/rpcsvc/Makefile:RPCCOM= RPCGEN_CPP=${CPP:Q} rpcgen -C include/rpc/Makefile:RPCCOM= RPCGEN_CPP=${CPP:Q} rpcgen -C lib/librpcsvc/Makefile:RPCCOM= RPCGEN_CPP=${CPP:Q} rpcgen -C lib/libc/tests/rpc/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -L -C lib/libc/rpc/Makefile.inc:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -C lib/libc/yp/Makefile.inc:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -C lib/libypclnt/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -C libexec/ypxfr/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -I -C release/picobsd/tinyware/passwd/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -C sys/modules/kgssapi/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -hM $S/kgssapi/gssd.x | grep -v pthread.h > gssd.h sys/modules/kgssapi/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -c $S/kgssapi/gssd.x -o gssd_xdr.c sys/modules/kgssapi/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -lM $S/kgssapi/gssd.x | grep -v string.h > gssd_clnt.c sys/modules/kgssapi_krb5/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -hM $S/kgssapi/gssd.x | grep -v pthread.h > gssd.h sys/conf/files: compile-with "RPCGEN_CPP='${CPP}' rpcgen -hM $S/kgssapi/gssd.x | grep -v pthread.h > gssd.h" \ sys/conf/files: compile-with "RPCGEN_CPP='${CPP}' rpcgen -c $S/kgssapi/gssd.x -o gssd_xdr.c" \ sys/conf/files: compile-with "RPCGEN_CPP='${CPP}' rpcgen -lM $S/kgssapi/gssd.x | grep -v string.h > gssd_clnt.c" \ usr.bin/rpcgen/rpc_main.c: else if ((var = getenv("RPCGEN_CPP")) == NULL) usr.bin/rpcgen/rpcgen.1:.Ev RPCGEN_CPP usr.sbin/rpc.ypxfrd/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -I -C usr.sbin/yppush/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -C usr.sbin/amd/Makefile.inc:RPCCOM= RPCGEN_CPP=${CPP:Q} rpcgen usr.sbin/bootparamd/bootparamd/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -C -m -o ${.TARGET} ${RPCSRC} usr.sbin/bootparamd/bootparamd/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -C -c -o ${.TARGET} ${RPCSRC} usr.sbin/bootparamd/bootparamd/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -C -h -o ${.TARGET} ${RPCSRC} usr.sbin/bootparamd/callbootd/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -C -l -o ${.TARGET} ${RPCSRC} usr.sbin/bootparamd/callbootd/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -C -c -o ${.TARGET} ${RPCSRC} usr.sbin/bootparamd/callbootd/Makefile: RPCGEN_CPP=${CPP:Q} rpcgen -C -h -o ${.TARGET} ${RPCSRC} usr.sbin/gssd/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -L -C -M usr.sbin/rpc.yppasswdd/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -I -C usr.sbin/ypserv/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -I -C usr.sbin/keyserv/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -C usr.sbin/rpc.ypupdated/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -I -C usr.sbin/rpc.lockd/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -L -C usr.sbin/rpc.statd/Makefile:RPCGEN= RPCGEN_CPP=${CPP:Q} rpcgen -L -C
Lesson to learn here: opening a Gentoo bug will take 3.5yr to fix this. If you submit patch upstream, you'll get it approved in half a day ;-). I'm going to test the updated ebuilds and commit them in a few minutes. A side note though: you don't want to define CPP globally for all ebuilds. It breaks stuff ;-).
Now in 3.9.0+. Please test. commit 00f67b1579de819d36bd728a1af6e1fa4fca9f4c Author: Michał Górny <mgorny@gentoo.org> AuthorDate: Sun Oct 2 23:32:01 2016 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: Sun Oct 2 23:51:49 2016 sys-devel/llvm: Backport clang-cpp symlink, #478810 commit 580e344faafafd53dfe8a47e62ec8f11dad79fda Author: Michał Górny <mgorny@gentoo.org> AuthorDate: Sun Oct 2 23:30:45 2016 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: Sun Oct 2 23:51:48 2016 sys-devel/clang: Wrap the new clang-cpp symlink, #478810
