Compilation fails with glibc-2.26 due to SIGUNUSED being undefined: x86_64-pc-linux-gnu-gcc -m32 -march=core2 -ggdb -O2 -pipe -Wno-implicit -Demacs -c -o emacs.o emacs.c In file included from config.h:33:0, from emacs.c:26: emacs.c: In function ‘main’: s-linux.h:229:16: error: ‘SIGUNUSED’ undeclared (first use in this function) #define SIGSYS SIGUNUSED /* rename to harmless work-alike */ ^ m-intel386.h:177:36: note: in definition of macro ‘signal’ #define signal(sig, func) (signal (sig, (void (*) (int)) (func))) ^~~ emacs.c:426:15: note: in expansion of macro ‘SIGSYS’ signal (SIGSYS, fatal_error_signal); ^~~~~~ s-linux.h:229:16: note: each undeclared identifier is reported only once for each function it appears in #define SIGSYS SIGUNUSED /* rename to harmless work-alike */ ^ m-intel386.h:177:36: note: in definition of macro ‘signal’ #define signal(sig, func) (signal (sig, (void (*) (int)) (func))) ^~~ emacs.c:426:15: note: in expansion of macro ‘SIGSYS’ signal (SIGSYS, fatal_error_signal); ^~~~~~ make[2]: *** [<builtin>: emacs.o] Error 1 make[2]: Leaving directory '/var/tmp/portage/app-editors/emacs-18.59-r11/work/emacs-18.59/src' make[1]: *** [Makefile:11: doall] Error 2 make[1]: Leaving directory '/var/tmp/portage/app-editors/emacs-18.59-r11/work/emacs-18.59/src' make: *** [Makefile:51: src] Error 2 * ERROR: app-editors/emacs-18.59-r11::gentoo failed (compile phase): * emake failed
Created attachment 507812 [details] build.log
Created attachment 507814 [details] emerge --info
The issue with glibc-2.26 is actually trivial to fix, since SIGUNUSED was only an alias for SIGSYS: --- emacs-18.59/src/s-linux.h~ +++ emacs-18.59/src/s-linux.h @@ -225,8 +225,6 @@ #define MAXNAMLEN NAME_MAX /* missing SYSV-ism */ #endif -#undef SIGSYS -#define SIGSYS SIGUNUSED /* rename to harmless work-alike */ #define VSWTCH VSWTC /* mis-spelling in termios.h? */ /* we have non-standard standard I/O (iostream) ... */ However, after fixing this, there is a segmentation fault in temacs: x86_64-pc-linux-gnu-gcc -m32 -nostdlib -Wl,-O1 -Wl,--as-needed -o temacs pre-crt0.o /usr/lib32/crt1.o /usr/lib32/crti.o dispnew.o scroll.o xdisp.o window.o term.o cm.o emacs.o keyboard.o macros.o keymap.o sysdep.o buffer.o filelock.o insdel.o marker.o minibuf.o fileio.o dired.o filemode.o cmds.o casefiddle.o indent.o search.o regex.o undo.o alloc.o data.o doc.o editfns.o callint.o eval.o fns.o print.o lread.o abbrev.o syntax.o unexelf.o mocklisp.o bytecode.o process.o callproc.o doprnt.o terminfo.o lastfile.o -lncurses -lc /usr/lib32/crtn.o -lgcc -lc fileio.o: In function `report_file_error': /var/tmp/portage/app-editors/emacs-18.59-r11/work/emacs-18.59/src/fileio.c:119: warning: `sys_errlist' is deprecated; use `strerror' or `strerror_r' instead /var/tmp/portage/app-editors/emacs-18.59-r11/work/emacs-18.59/src/fileio.c:118: warning: `sys_nerr' is deprecated; use `strerror' or `strerror_r' instead fileio.o: In function `Fmake_temp_name': /var/tmp/portage/app-editors/emacs-18.59-r11/work/emacs-18.59/src/fileio.c:455: warning: the use of `mktemp' is dangerous, better use `mkstemp' or `mkdtemp' /usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/../../../../x86_64-pc-linux-gnu/bin/ld: /usr/lib32/crt1.o: warning: relocation against `__libc_csu_fini' in readonly section `.text' /usr/lib/gcc/x86_64-pc-linux-gnu/6.4.0/../../../../x86_64-pc-linux-gnu/bin/ld: warning: creating a DT_TEXTREL in a shared object. rm -f ../etc/DOC ../etc/make-docfile dispnew.o scroll.o xdisp.o window.o term.o cm.o emacs.o keyboard.o macros.o keymap.o sysdep.o buffer.o filelock.o insdel.o marker.o minibuf.o fileio.o dired.o filemode.o cmds.o casefiddle.o indent.o search.o regex.o undo.o alloc.o data.o doc.o editfns.o callint.o eval.o fns.o print.o lread.o abbrev.o syntax.o unexelf.o mocklisp.o bytecode.o process.o callproc.o doprnt.o ../lisp/simple.elc ../lisp/help.elc ../lisp/files.elc ../lisp/window.elc ../lisp/indent.elc ../lisp/loaddefs.el ../lisp/paths.el ../lisp/startup.elc ../lisp/lisp.elc ../lisp/page.elc ../lisp/register.elc ../lisp/paragraphs.elc ../lisp/lisp-mode.elc ../lisp/text-mode.elc ../lisp/fill.elc ../lisp/c-mode.elc ../lisp/isearch.elc ../lisp/replace.elc ../lisp/abbrev.elc ../lisp/buff-menu.elc ../lisp/subr.elc ../lisp/version.el > ../etc/DOC ./temacs -batch -l inc-vers make[2]: *** [xmakefile:23: xemacs] Segmentation fault make[2]: Leaving directory '/var/tmp/portage/app-editors/emacs-18.59-r11/work/emacs-18.59/src' make[1]: *** [Makefile:11: doall] Error 2 make[1]: Leaving directory '/var/tmp/portage/app-editors/emacs-18.59-r11/work/emacs-18.59/src' make: *** [Makefile:51: src] Error 2 * ERROR: app-editors/emacs-18.59-r11::gentoo failed (compile phase): * emake failed
Created attachment 507816 [details] build.log after fixing the SIGUNUSED problem
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=10fd6109c66bf8273951837ca7c3a5a07c5e88e2 commit 10fd6109c66bf8273951837ca7c3a5a07c5e88e2 Author: Ulrich Müller <ulm@gentoo.org> AuthorDate: 2017-12-07 21:02:29 +0000 Commit: Ulrich Müller <ulm@gentoo.org> CommitDate: 2017-12-07 21:02:29 +0000 app-editors/emacs: Fix compilation with glibc-2.26. Bug: https://bugs.gentoo.org/639562 Package-Manager: Portage-2.3.16, Repoman-2.3.6 app-editors/emacs/Manifest | 2 +- app-editors/emacs/emacs-18.59-r11.ebuild | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-)}
The issue with missing SIGUNUSED in glibc-2.26 headers is fixed, and building with gcc-5.4.0 succeeds. However, it still segfaults when trying to build with gcc-6.4.0, see the end of comment #3.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=378170ef0a5bcc0c7511badf188575b7e6055ccc commit 378170ef0a5bcc0c7511badf188575b7e6055ccc Author: Ulrich Müller <ulm@gentoo.org> AuthorDate: 2017-12-10 23:52:34 +0000 Commit: Ulrich Müller <ulm@gentoo.org> CommitDate: 2017-12-10 23:56:50 +0000 app-editors/emacs: Fix Emacs 18 build failure with 17.0 profiles. Adding -no-pie to LDFLAGS also does the trick for emacs-18.59. Rearrange toolchain flag manipulation a bit. Closes: https://bugs.gentoo.org/639562 Package-Manager: Portage-2.3.17, Repoman-2.3.6 app-editors/emacs/emacs-18.59-r11.ebuild | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)
