Just informing you… When building with GCC 4.9.0 [svn r208221], then the following happens:
$ make [...] make --no-print-directory all-recursive Making all in . CC src/libsystemd/sd-bus/libsystemd_la-sd-bus.lo CC src/libsystemd/sd-bus/libsystemd_la-bus-control.lo CC src/libsystemd/sd-bus/libsystemd_la-bus-error.lo [...] $ nm src/libsystemd/sd-bus/.libs/libsystemd_la-sd-bus.o 0000000000000001 C __gnu_lto_slim 0000000000000001 C __gnu_lto_v1 systemd enables -flto by default, but the actual symbols are no longer generated with gcc-4.9. They were in gcc-4.8, but perhaps LTO was not effective in that version. As a result, the "-export-symbols-regex" option passed to libtool (see Makefile.am for it) yields no results as it relies on nm output. Therefore, file .libs/libgudev-1.0.ver that is generated by "-export-symbols-regex" is empty and causes further linker errors down the road. $ make CCLD libgudev-1.0.la /usr/bin/ld.gold: error: .libs/libgudev-1.0.ver:2:1: syntax error, unexpected LOCAL, expecting STRING or QUOTED_STRING or EXTERN /usr/bin/ld.gold: fatal error: unable to parse version script file .libs/libgudev-1.0.ver collect2: error: ld returned 1 exit status (Problem 2 (which has been reported): libtool should have warned about an empty .ver, but it does not, leading to an undescriptive error.) Further down one may spot, but that is just a result of the previous ones. CCLD systemd-cgls src/cgls/cgls.c:131: error: undefined reference to 'log_parse_environment' src/cgls/cgls.c:132: error: undefined reference to 'log_open' src/cgls/cgls.c:214: error: undefined reference to 'pager_close' _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
