* [PATCH 1/2] daemon: Fix '--version'. @ 2016-08-24 1:34 Alex Vong 2016-08-29 1:31 ` (ping!) " Alex Vong 2016-08-29 16:12 ` Ludovic Courtès 0 siblings, 2 replies; 9+ messages in thread From: Alex Vong @ 2016-08-24 1:34 UTC (permalink / raw To: guix-devel [-- Attachment #1: Type: text/plain, Size: 196 bytes --] Hi guixes, This one and the next patch fix '--version' of guix-daemon and guix-register. Currently, they are not working, which is the reason why help2man gives error when building from source. [-- Attachment #2: 0001-daemon-Fix-version.patch --] [-- Type: text/x-diff, Size: 1602 bytes --] From 06d97b6de29aedeec7efe6f9a1e654145183a06b Mon Sep 17 00:00:00 2001 From: Alex Vong <alexvong1995@gmail.com> Date: Wed, 24 Aug 2016 08:25:48 +0800 Subject: [PATCH 1/2] daemon: Fix '--version'. * nix/nix-daemon/guix-daemon.cc (argp_program_version): Assigning instead of declaring. (argp_program_bug_address): Likewise. --- nix/nix-daemon/guix-daemon.cc | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/nix/nix-daemon/guix-daemon.cc b/nix/nix-daemon/guix-daemon.cc index d5d33a5..41b56cb 100644 --- a/nix/nix-daemon/guix-daemon.cc +++ b/nix/nix-daemon/guix-daemon.cc @@ -1,5 +1,6 @@ /* GNU Guix --- Functional package management for GNU Copyright (C) 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org> + Copyright (C) 2016 Alex Vong <alexvong1995@gmail.com> This file is part of GNU Guix. @@ -53,10 +54,6 @@ extern void run (Strings args); static const char guix_textdomain[] = "guix"; -const char *argp_program_version = - "guix-daemon (" PACKAGE_NAME ") " PACKAGE_VERSION; -const char *argp_program_bug_address = PACKAGE_BUGREPORT; - static char doc[] = n_("guix-daemon -- perform derivation builds and store accesses") "\v\n" @@ -344,6 +341,8 @@ main (int argc, char *argv[]) settings.useBuildHook = false; #endif + argp_program_version = "guix-daemon (" PACKAGE_NAME ") " PACKAGE_VERSION; + argp_program_bug_address = PACKAGE_BUGREPORT; argp_parse (&argp, argc, argv, 0, 0, 0); /* Effect all the changes made via 'settings.set'. */ -- 2.9.3 ^ permalink raw reply related [flat|nested] 9+ messages in thread
* (ping!) Re: [PATCH 1/2] daemon: Fix '--version'. 2016-08-24 1:34 [PATCH 1/2] daemon: Fix '--version' Alex Vong @ 2016-08-29 1:31 ` Alex Vong 2016-08-29 16:12 ` Ludovic Courtès 1 sibling, 0 replies; 9+ messages in thread From: Alex Vong @ 2016-08-29 1:31 UTC (permalink / raw To: guix-devel Hi, Alex Vong <alexvong1995@gmail.com> writes: > Hi guixes, > > This one and the next patch fix '--version' of guix-daemon and > guix-register. Currently, they are not working, which is the reason why > help2man gives error when building from source. > > > From 06d97b6de29aedeec7efe6f9a1e654145183a06b Mon Sep 17 00:00:00 2001 > From: Alex Vong <alexvong1995@gmail.com> > Date: Wed, 24 Aug 2016 08:25:48 +0800 > Subject: [PATCH 1/2] daemon: Fix '--version'. > > * nix/nix-daemon/guix-daemon.cc (argp_program_version): Assigning > instead of declaring. > (argp_program_bug_address): Likewise. > --- > nix/nix-daemon/guix-daemon.cc | 7 +++---- > 1 file changed, 3 insertions(+), 4 deletions(-) > > diff --git a/nix/nix-daemon/guix-daemon.cc b/nix/nix-daemon/guix-daemon.cc > index d5d33a5..41b56cb 100644 > --- a/nix/nix-daemon/guix-daemon.cc > +++ b/nix/nix-daemon/guix-daemon.cc > @@ -1,5 +1,6 @@ > /* GNU Guix --- Functional package management for GNU > Copyright (C) 2012, 2013, 2014, 2015, 2016 Ludovic Courtès <ludo@gnu.org> > + Copyright (C) 2016 Alex Vong <alexvong1995@gmail.com> > > This file is part of GNU Guix. > > @@ -53,10 +54,6 @@ extern void run (Strings args); > static const char guix_textdomain[] = "guix"; > > > -const char *argp_program_version = > - "guix-daemon (" PACKAGE_NAME ") " PACKAGE_VERSION; > -const char *argp_program_bug_address = PACKAGE_BUGREPORT; > - > static char doc[] = > n_("guix-daemon -- perform derivation builds and store accesses") > "\v\n" > @@ -344,6 +341,8 @@ main (int argc, char *argv[]) > settings.useBuildHook = false; > #endif > > + argp_program_version = "guix-daemon (" PACKAGE_NAME ") " PACKAGE_VERSION; > + argp_program_bug_address = PACKAGE_BUGREPORT; > argp_parse (&argp, argc, argv, 0, 0, 0); > > /* Effect all the changes made via 'settings.set'. */ This patch and the other one fix the problem reported in <https://lists.gnu.org/archive/html/guix-devel/2016-08/msg00529.html>, do they look good? Thanks, Alex ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/2] daemon: Fix '--version'. 2016-08-24 1:34 [PATCH 1/2] daemon: Fix '--version' Alex Vong 2016-08-29 1:31 ` (ping!) " Alex Vong @ 2016-08-29 16:12 ` Ludovic Courtès 2016-08-30 4:29 ` Alex Vong 1 sibling, 1 reply; 9+ messages in thread From: Ludovic Courtès @ 2016-08-29 16:12 UTC (permalink / raw To: Alex Vong; +Cc: guix-devel Hi! Alex Vong <alexvong1995@gmail.com> skribis: > This one and the next patch fix '--version' of guix-daemon and > guix-register. Currently, they are not working, which is the reason why > help2man gives error when building from source. How are they not working exactly? :-) It definitely works for me: --8<---------------cut here---------------start------------->8--- $ ./guix-daemon --version guix-daemon (GNU Guix) 0.11.0 $ ./guix-register --version guix-register (GNU Guix) 0.11.0 --8<---------------cut here---------------end--------------->8--- Ludo’. ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/2] daemon: Fix '--version'. 2016-08-29 16:12 ` Ludovic Courtès @ 2016-08-30 4:29 ` Alex Vong 2016-08-31 21:13 ` Ludovic Courtès 0 siblings, 1 reply; 9+ messages in thread From: Alex Vong @ 2016-08-30 4:29 UTC (permalink / raw To: Ludovic Courtès; +Cc: guix-devel Hello, ludo@gnu.org (Ludovic Courtès) writes: > Hi! > > Alex Vong <alexvong1995@gmail.com> skribis: > >> This one and the next patch fix '--version' of guix-daemon and >> guix-register. Currently, they are not working, which is the reason why >> help2man gives error when building from source. > > How are they not working exactly? :-) > > It definitely works for me: > > $ ./guix-daemon --version > guix-daemon (GNU Guix) 0.11.0 > $ ./guix-register --version > guix-register (GNU Guix) 0.11.0 > I get this output instead: $ LC_ALL=C ./guix-daemon --version ./guix-daemon: unrecognized option '--version' Try `guix-daemon --help' or `guix-daemon --usage' for more information. This is werid, but I think it is because I build guix with lto. Here is how I build guix: $ ./bootstrap && ./configure CFLAGS='-O2 -flto' CXXFLAGS='-O2 -flto' LDFLAGS='-O2 -flto' && make -j`nproc` AR=gcc-ar NM=gcc-nm RANLIB=gcc-ranlib So, perhaps this is a gcc bug! (not guix's one, we can forget about the patch) Could you reproduce it? > Ludo’. Thanks, Alex ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/2] daemon: Fix '--version'. 2016-08-30 4:29 ` Alex Vong @ 2016-08-31 21:13 ` Ludovic Courtès 2016-09-01 6:23 ` Alex Vong 0 siblings, 1 reply; 9+ messages in thread From: Ludovic Courtès @ 2016-08-31 21:13 UTC (permalink / raw To: Alex Vong; +Cc: guix-devel [-- Attachment #1: Type: text/plain, Size: 755 bytes --] Hi Alex, Alex Vong <alexvong1995@gmail.com> skribis: > ludo@gnu.org (Ludovic Courtès) writes: > >> Hi! >> >> Alex Vong <alexvong1995@gmail.com> skribis: >> >>> This one and the next patch fix '--version' of guix-daemon and >>> guix-register. Currently, they are not working, which is the reason why >>> help2man gives error when building from source. [...] > I get this output instead: > > $ LC_ALL=C ./guix-daemon --version > ./guix-daemon: unrecognized option '--version' > Try `guix-daemon --help' or `guix-daemon --usage' for more information. > > This is werid, but I think it is because I build guix with lto. What about the attached program? It works for me with GCC 6.2.0, both with and without LTO. Ludo’. [-- Attachment #2: argp C++ --] [-- Type: text/plain, Size: 478 bytes --] #include <argp.h> const char *argp_program_version = "foo"; const char *argp_program_bug_address = "foo@example.org"; static const struct argp_option options[] = { { "system", 's', "SYSTEM", 0, "assume SYSTEM as the current system type" }, { 0, 0, 0, 0, 0 } }; static const struct argp argp = { options, NULL, NULL, "doc", NULL, NULL, NULL }; int main (int argc, char *argv[]) { argp_parse (&argp, argc, argv, 0, 0, 0); return 0; } ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/2] daemon: Fix '--version'. 2016-08-31 21:13 ` Ludovic Courtès @ 2016-09-01 6:23 ` Alex Vong 2016-09-01 12:15 ` Ludovic Courtès 0 siblings, 1 reply; 9+ messages in thread From: Alex Vong @ 2016-09-01 6:23 UTC (permalink / raw To: Ludovic Courtès; +Cc: guix-devel Hi Ludovic, ludo@gnu.org (Ludovic Courtès) writes: > Hi Alex, > > Alex Vong <alexvong1995@gmail.com> skribis: > [...] > >> I get this output instead: >> >> $ LC_ALL=C ./guix-daemon --version >> ./guix-daemon: unrecognized option '--version' >> Try `guix-daemon --help' or `guix-daemon --usage' for more information. >> >> This is werid, but I think it is because I build guix with lto. > > What about the attached program? It works for me with GCC 6.2.0, both > with and without LTO. > > Ludo’. > > #include <argp.h> > > const char *argp_program_version = "foo"; > const char *argp_program_bug_address = "foo@example.org"; > > static const struct argp_option options[] = > { > { "system", 's', "SYSTEM", 0, > "assume SYSTEM as the current system type" }, > { 0, 0, 0, 0, 0 } > }; > > static const struct argp argp = > { > options, NULL, > NULL, "doc", > NULL, NULL, > NULL > }; > > int > main (int argc, char *argv[]) > { > argp_parse (&argp, argc, argv, 0, 0, 0); > return 0; > } I think you have isolated the problem! This test case does not work for me. I get the following output after building with (g++ -O2 -flto version.cxx): ============================================================================== alexvong1995@debian:~/c++$ ./a.out --version ./a.out: unrecognized option '--version' Try `a.out --help' or `a.out --usage' for more information. =========================================================================== alexvong1995@debian:~/c++$ ./a.out --help Usage: a.out [OPTION...] doc -s, --system=SYSTEM assume SYSTEM as the current system type -?, --help Give this help list --usage Give a short usage message Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options. =========================================================================== My gcc version is also 6.2.0: =========================================================================== alexvong1995@debian:~/c++$ LC_ALL=C g++ --version g++ (GCC) 6.2.0 Copyright (C) 2016 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. =========================================================================== Running strace show the following output (ltrace output is not intersting): =========================================================================== alexvong1995@debian:~/c++$ strace ./a.out --version execve("./a.out", ["./a.out", "--version"], [/* 71 vars */]) = 0 brk(0) = 0xf63000 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc8f6b26000 access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory) open("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/tls/x86_64/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) stat("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/tls/x86_64", 0x7fff93fa35f0) = -1 ENOENT (No such file or directory) open("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/tls/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) stat("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/tls", 0x7fff93fa35f0) = -1 ENOENT (No such file or directory) open("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/x86_64/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) stat("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/x86_64", 0x7fff93fa35f0) = -1 ENOENT (No such file or directory) open("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) stat("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib", {st_mode=S_IFDIR|0555, st_size=4096, ...}) = 0 open("/gnu/store/v9r00bv3ivimpr0nzhaas3rsqaa5xvbw-gcc-6.2.0-lib/lib/tls/x86_64/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) stat("/gnu/store/v9r00bv3ivimpr0nzhaas3rsqaa5xvbw-gcc-6.2.0-lib/lib/tls/x86_64", 0x7fff93fa35f0) = -1 ENOENT (No such file or directory) open("/gnu/store/v9r00bv3ivimpr0nzhaas3rsqaa5xvbw-gcc-6.2.0-lib/lib/tls/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) stat("/gnu/store/v9r00bv3ivimpr0nzhaas3rsqaa5xvbw-gcc-6.2.0-lib/lib/tls", 0x7fff93fa35f0) = -1 ENOENT (No such file or directory) open("/gnu/store/v9r00bv3ivimpr0nzhaas3rsqaa5xvbw-gcc-6.2.0-lib/lib/x86_64/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) stat("/gnu/store/v9r00bv3ivimpr0nzhaas3rsqaa5xvbw-gcc-6.2.0-lib/lib/x86_64", 0x7fff93fa35f0) = -1 ENOENT (No such file or directory) open("/gnu/store/v9r00bv3ivimpr0nzhaas3rsqaa5xvbw-gcc-6.2.0-lib/lib/libstdc++.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\20\255\10\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0555, st_size=2032024, ...}) = 0 mmap(NULL, 3666688, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fc8f6586000 mprotect(0x7fc8f66f7000, 2093056, PROT_NONE) = 0 mmap(0x7fc8f68f6000, 49152, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x170000) = 0x7fc8f68f6000 mmap(0x7fc8f6902000, 13056, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fc8f6902000 close(3) = 0 open("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/libm.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0`U\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0555, st_size=1141048, ...}) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc8f6b25000 mmap(NULL, 3166528, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fc8f6280000 mprotect(0x7fc8f6385000, 2093056, PROT_NONE) = 0 mmap(0x7fc8f6584000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x104000) = 0x7fc8f6584000 close(3) = 0 open("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) open("/gnu/store/v9r00bv3ivimpr0nzhaas3rsqaa5xvbw-gcc-6.2.0-lib/lib/libgcc_s.so.1", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0p*\0\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0444, st_size=100680, ...}) = 0 mmap(NULL, 2185584, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fc8f606a000 mprotect(0x7fc8f6080000, 2093056, PROT_NONE) = 0 mmap(0x7fc8f627f000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x15000) = 0x7fc8f627f000 close(3) = 0 open("/gnu/store/m9vxvhdj691bq1f85lpflvnhcvrdilih-glibc-2.23/lib/libc.so.6", O_RDONLY|O_CLOEXEC) = 3 read(3, "\177ELF\2\1\1\3\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0 \t\2\0\0\0\0\0"..., 832) = 832 fstat(3, {st_mode=S_IFREG|0555, st_size=1942128, ...}) = 0 mmap(NULL, 3808896, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7fc8f5cc8000 mprotect(0x7fc8f5e61000, 2093056, PROT_NONE) = 0 mmap(0x7fc8f6060000, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x198000) = 0x7fc8f6060000 mmap(0x7fc8f6066000, 16000, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7fc8f6066000 close(3) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc8f6b24000 mmap(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc8f6b22000 arch_prctl(ARCH_SET_FS, 0x7fc8f6b22740) = 0 mprotect(0x7fc8f6060000, 16384, PROT_READ) = 0 mprotect(0x7fc8f6584000, 4096, PROT_READ) = 0 mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc8f6b21000 mprotect(0x7fc8f68f6000, 40960, PROT_READ) = 0 mprotect(0x7fc8f6b28000, 4096, PROT_READ) = 0 brk(0) = 0xf63000 brk(0xf95000) = 0xf95000 write(2, "./a.out: unrecognized option '--"..., 41./a.out: unrecognized option '--version' ) = 41 write(2, "Try `a.out --help' or `a.out --u"..., 60Try `a.out --help' or `a.out --usage' for more information. ) = 60 exit_group(64) = ? +++ exited with 64 +++ =========================================================================== Do you have any idea? Thanks, Alex ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/2] daemon: Fix '--version'. 2016-09-01 6:23 ` Alex Vong @ 2016-09-01 12:15 ` Ludovic Courtès 2016-09-02 1:00 ` Alex Vong 0 siblings, 1 reply; 9+ messages in thread From: Ludovic Courtès @ 2016-09-01 12:15 UTC (permalink / raw To: Alex Vong; +Cc: guix-devel Alex Vong <alexvong1995@gmail.com> skribis: > ludo@gnu.org (Ludovic Courtès) writes: [...] >> #include <argp.h> >> >> const char *argp_program_version = "foo"; >> const char *argp_program_bug_address = "foo@example.org"; >> >> static const struct argp_option options[] = >> { >> { "system", 's', "SYSTEM", 0, >> "assume SYSTEM as the current system type" }, >> { 0, 0, 0, 0, 0 } >> }; >> >> static const struct argp argp = >> { >> options, NULL, >> NULL, "doc", >> NULL, NULL, >> NULL >> }; >> >> int >> main (int argc, char *argv[]) >> { >> argp_parse (&argp, argc, argv, 0, 0, 0); >> return 0; >> } > > I think you have isolated the problem! This test case does not work for > me. > > > I get the following output after building with > (g++ -O2 -flto version.cxx): What if you compile with ‘gcc’ (and rename to foo.c) instead of ‘g++’? It might be a symbol visibility problem, or name mangling issue. Ludo’. ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/2] daemon: Fix '--version'. 2016-09-01 12:15 ` Ludovic Courtès @ 2016-09-02 1:00 ` Alex Vong 2016-09-02 12:41 ` Ludovic Courtès 0 siblings, 1 reply; 9+ messages in thread From: Alex Vong @ 2016-09-02 1:00 UTC (permalink / raw To: Ludovic Courtès; +Cc: guix-devel ludo@gnu.org (Ludovic Courtès) writes: > Alex Vong <alexvong1995@gmail.com> skribis: > [...] >> >> I think you have isolated the problem! This test case does not work for >> me. >> >> >> I get the following output after building with >> (g++ -O2 -flto version.cxx): > > What if you compile with ‘gcc’ (and rename to foo.c) instead of ‘g++’? > > It might be a symbol visibility problem, or name mangling issue. > > Ludo’. Hmm, I try to build with 'gcc -O2 -flto version.c' and './a.out --version' still fails with 'unrecognized option'. I check the symbols using 'nm' and they are not mangled. How should I check for the sign of a symbol visibility problems? Thanks, Alex ^ permalink raw reply [flat|nested] 9+ messages in thread
* Re: [PATCH 1/2] daemon: Fix '--version'. 2016-09-02 1:00 ` Alex Vong @ 2016-09-02 12:41 ` Ludovic Courtès 0 siblings, 0 replies; 9+ messages in thread From: Ludovic Courtès @ 2016-09-02 12:41 UTC (permalink / raw To: Alex Vong; +Cc: guix-devel Alex Vong <alexvong1995@gmail.com> skribis: > ludo@gnu.org (Ludovic Courtès) writes: > >> Alex Vong <alexvong1995@gmail.com> skribis: >> > [...] >>> >>> I think you have isolated the problem! This test case does not work for >>> me. >>> >>> >>> I get the following output after building with >>> (g++ -O2 -flto version.cxx): >> >> What if you compile with ‘gcc’ (and rename to foo.c) instead of ‘g++’? >> >> It might be a symbol visibility problem, or name mangling issue. >> >> Ludo’. > > Hmm, I try to build with 'gcc -O2 -flto version.c' and './a.out > --version' still fails with 'unrecognized option'. I check the symbols > using 'nm' and they are not mangled. How should I check for the sign of > a symbol visibility problems? ‘nm’ shows a capital T for exported symbols, and a lowercase t for hidden/private symbols. Maybe you should report a bug against your distro’s package and see what they think? Ludo’. ^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2016-09-02 12:41 UTC | newest] Thread overview: 9+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2016-08-24 1:34 [PATCH 1/2] daemon: Fix '--version' Alex Vong 2016-08-29 1:31 ` (ping!) " Alex Vong 2016-08-29 16:12 ` Ludovic Courtès 2016-08-30 4:29 ` Alex Vong 2016-08-31 21:13 ` Ludovic Courtès 2016-09-01 6:23 ` Alex Vong 2016-09-01 12:15 ` Ludovic Courtès 2016-09-02 1:00 ` Alex Vong 2016-09-02 12:41 ` Ludovic Courtès
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