Encountered during emerge @preserved-rebuild. sys-devel/gcc-4.5.4 and sys-devel/gcc-4.7.4-r1 fail to build with error: field ‘uc’ has incomplete type sys-devel/gcc-4.5.4: > In file included from /var/tmp/portage/sys-devel/gcc-4.5.4/work/gcc-4.5.4/libgcc/../gcc/unwind-dw2.c:334:0: > /var/tmp/portage/sys-devel/gcc-4.5.4/work/gcc-4.5.4/libgcc/../gcc/config/i386/linux-unwind.h: In function ‘x86_fallback_frame_state’: > /var/tmp/portage/sys-devel/gcc-4.5.4/work/gcc-4.5.4/libgcc/../gcc/config/i386/linux-unwind.h:139:18: error: field ‘uc’ has incomplete type > make[5]: *** [/var/tmp/portage/sys-devel/gcc-4.5.4/work/gcc-4.5.4/libgcc/shared-object.mk:12: unwind-dw2.o] Error 1 sys-devel/gcc-4.7.4-r1: > In file included from /var/tmp/portage/sys-devel/gcc-4.7.4-r1/work/gcc-4.7.4/libgcc/unwind-dw2.c:376:0: > ./md-unwind-support.h: In function ‘x86_fallback_frame_state’: > ./md-unwind-support.h:145:18: error: field ‘uc’ has incomplete type May be related to bug 640368. Not sure how high the priority of buildability of hard-masked ancient gcc versions is. I tend to keep them around just in case I encounter a gcc bug and want to see if happens in old versions.
It's not typically possible to build very old gcc versions with the latest gcc. Try building gcc-4.7 with the next newer version you have, etc.
Does gcc-4.5.4-r1 and gcc-4.7.4-r2 work for you?
Settings gcc-4.7.4 as the system compiler, compiling gcc-4.7.4-r1, I still get: > In file included from /var/tmp/portage/sys-devel/gcc-4.7.4-r1/work/gcc-4.7.4/libgcc/unwind-dw2.c:376:0: > ./md-unwind-support.h: In function ‘x86_fallback_frame_state’: > ./md-unwind-support.h:145:18: error: field ‘uc’ has incomplete type > make[5]: *** [/var/tmp/portage/sys-devel/gcc-4.7.4-r1/work/gcc-4.7.4/libgcc/shared-object.mk:14: unwind-dw2.o] Error 1 > make[5]: *** Waiting for unfinished jobs.... Trying gcc-4.7.4-r2 (with or without 4.7.4 as the system compiler), I get this instead: (not completely sure, but I think it takes longer before giving an error than -r1) > mv -f $depbase.Tpo $depbase.Plo > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libjava/prims.cc: In function ‘void _Jv_catch_fpe(int, siginfo_t*, void*)’: > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libjava/prims.cc:192:3: error: invalid use of incomplete type ‘struct _Jv_catch_fpe(int, siginfo_t*, void*)::ucontext’ > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libjava/prims.cc:192:3: error: forward declaration of ‘struct _Jv_catch_fpe(int, siginfo_t*, void*)::ucontext’ > mv -f .deps/cshift0_i2.Tpo .deps/cshift0_i2.Plo Haven't tried gcc-4.5.4-r1.
Can you post full build.log? I guess you have gcj and awt enabled.
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=750c85768c0bbbd29e6db6a0d173f5b55e5a2edb commit 750c85768c0bbbd29e6db6a0d173f5b55e5a2edb Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-11-19 23:39:46 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-11-19 23:39:46 +0000 4.3.6: backport libjava-ucontext.patch: bug #671270 Reported-by: Cyp Bug: https://bugs.gentoo.org/671270 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> 4.3.6/gentoo/93_all_libjava-ucontext.patch | 47 ++++++++++++++++++++++++++++++ 4.3.6/gentoo/README.history | 3 ++ 2 files changed, 50 insertions(+) https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=6d6bc8d2b00e049b999e9646b4094853776f5094 commit 6d6bc8d2b00e049b999e9646b4094853776f5094 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-11-19 23:39:33 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-11-19 23:39:33 +0000 4.4.7: backport libjava-ucontext.patch: bug #671270 Reported-by: Cyp Bug: https://bugs.gentoo.org/671270 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> 4.4.7/gentoo/98_all_libjava-ucontext.patch | 47 ++++++++++++++++++++++++++++++ 4.4.7/gentoo/README.history | 3 ++ 2 files changed, 50 insertions(+) https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=daa311067ebdc86178b5a7d3f413c369b46e7a7e commit daa311067ebdc86178b5a7d3f413c369b46e7a7e Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-11-19 23:39:19 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-11-19 23:39:19 +0000 4.5.4: backport libjava-ucontext.patch: bug #671270 Reported-by: Cyp Bug: https://bugs.gentoo.org/671270 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> 4.5.4/gentoo/101_all_libjava-ucontext.patch | 47 +++++++++++++++++++++++++++++ 4.5.4/gentoo/README.history | 3 ++ 2 files changed, 50 insertions(+) https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=637f374a31cd971c1afff480162fc4ea9b675189 commit 637f374a31cd971c1afff480162fc4ea9b675189 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-11-19 23:39:00 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-11-19 23:39:00 +0000 4.6.4: backport libjava-ucontext.patch: bug #671270 Reported-by: Cyp Bug: https://bugs.gentoo.org/671270 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> 4.6.4/gentoo/95_all_libjava-ucontext.patch | 62 ++++++++++++++++++++++++++++++ 4.6.4/gentoo/README.history | 3 ++ 2 files changed, 65 insertions(+) https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=291c14f52fb8ea6e78852295df2a3344ed111966 commit 291c14f52fb8ea6e78852295df2a3344ed111966 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-11-19 23:38:44 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-11-19 23:38:44 +0000 4.7.4: backport libjava-ucontext.patch: bug #671270 Reported-by: Cyp Bug: https://bugs.gentoo.org/671270 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> 4.7.4/gentoo/96_all_libjava-ucontext.patch | 62 ++++++++++++++++++++++++++++++ 4.7.4/gentoo/README.history | 3 ++ 2 files changed, 65 insertions(+) https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=31dd52a2c44dd23b963c97a62bfb413d6e640e2c commit 31dd52a2c44dd23b963c97a62bfb413d6e640e2c Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2018-11-19 23:37:58 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2018-11-19 23:37:58 +0000 4.8.5: backport libjava-ucontext.patch: bug #671270 Reported-by: Cyp Bug: https://bugs.gentoo.org/671270 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> 4.8.5/gentoo/97_all_libjava-ucontext.patch | 62 ++++++++++++++++++++++++++++++ 4.8.5/gentoo/README.history | 1 + 2 files changed, 63 insertions(+)
As a workaround you can use USE=-gcj flag or drop a path to /etc/portage/patches/sys-devel/gcc:4.7.4/ until new gcc patchset is out.
Created attachment 555794 [details] 95_all_ucontext-to-ucontext_t.patch.out First patch attempt ignored since wget saved the patch with the '.patch?id=31dd52a2c44dd23b963c97a62bfb413d6e640e2c' extension instead of the '.patch' extension. Second attempt (after renaming to *.patch), see attached. Not sure if this is useful: > # grep -r 'struct ucontext' /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/ > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/gcc/ChangeLog-2005: 'struct ucontext'. > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/gcc/testsuite/gcc.target/sparc/sparc-getcontext-1.c:typedef struct ucontext ucontext_t; > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/gcc/testsuite/gcc.target/sparc/sparc-getcontext-1.c:struct ucontext { > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libgcc/config/mips/linux-unwind.h: * struct ucontext from sys/ucontext.h so this private copy is used. */ > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libgcc/config/s390/linux-unwind.h: struct ucontext_ > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libgcc/config/s390/linux-unwind.h: struct ucontext_ *uc_link; > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libgcc/config/sh/linux-unwind.h: struct ucontext uc; > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libjava/include/i386-signal.h: struct ucontext *_uc = (struct ucontext *)_p; \ > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libjava/include/sh-signal.h: * struct ucontext from sys/ucontext.h so this private copy is used. */ > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libjava/include/x86_64-signal.h: struct ucontext *_uc = (struct ucontext *)_p; \ > /var/tmp/portage/sys-devel/gcc-4.7.4-r2/work/gcc-4.7.4/libjava/include/s390-signal.h: struct ucontext *uc_link; \ Huh? Leaving auto-detect instead of selecting text/plain for the attachment gives this error: The content type chemical/x-gulp is invalid. Valid types must be of the form foo/bar where foo is one of application, audio, image, message, model, multipart, text, video and bar must not contain any special characters (such as "=", "?", ...).
Managed to build sys-devel/gcc-4.5.4-r1 with /etc/portage/patches/sys-devel/gcc:4.5.4/101_all_libjava-ucontext.patch, thanks.
gcc-4.5.4-r2 and 4.7.4-r3 are in tree and should contain the fix.
