gcc8: jit/jit-result.c:52:3: error: 'dlclose' was not declared in this scope

[kencu (Ken)]

The recent update to all the gcc versions to include jit code has broken the 32bit builds, at least on 10.6 where I live.

<​https://build.macports.org/builders/ports-10.6_i386-builder/builds/16987/steps/install-port/logs/stdio>

The i386 build is broken, and the universal build is also broken.

I've pegged back my gcc version to the pre-jit version on suitable systems until this is sorted out.

I haven't tried the full gamut of all the gcc versions on all possible systems yet, as I don't have 102,000 days to devote to that project :>

/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c:52:3: error: 'dlclose' was not declared in this scope
   dlclose (m_dso_handle);
   ^~~~~~~
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c:52:3: note: suggested alternative: 'close'
   dlclose (m_dso_handle);
   ^~~~~~~
   close
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c: In member function 'void* gcc::jit::result::get_code(const char*)':
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c:78:3: error: 'dlerror' was not declared in this scope
   dlerror ();
   ^~~~~~~
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c:78:3: note: suggested alternative: 'perror'
   dlerror ();
   ^~~~~~~
   perror
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c:80:10: error: 'dlsym' was not declared in this scope
   code = dlsym (m_dso_handle, funcname);
          ^~~~~
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c: In member function 'void* gcc::jit::result::get_global(const char*)':
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c:105:3: error: 'dlerror' was not declared in this scope
   dlerror ();
   ^~~~~~~
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c:105:3: note: suggested alternative: 'perror'
   dlerror ();
   ^~~~~~~
   perror
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-result.c:107:12: error: 'dlsym' was not declared in this scope
   global = dlsym (m_dso_handle, name);
            ^~~~~
make[3]: *** [jit/jit-result.o] Error 1
make[3]: *** Waiting for unfinished jobs....
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-playback.c: In member function 'gcc::jit::result* gcc::jit::playback::context::dlopen_built_dso()':
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-playback.c:2599:3: error: 'dlerror' was not declared in this scope
   dlerror ();
   ^~~~~~~
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-playback.c:2599:3: note: suggested alternative: 'error'
   dlerror ();
   ^~~~~~~
   error
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-playback.c:2602:6: error: 'RTLD_NOW' was not declared in this scope
      RTLD_NOW | RTLD_LOCAL);
      ^~~~~~~~
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-playback.c:2602:6: note: suggested alternative: 'CLD_NOOP'
      RTLD_NOW | RTLD_LOCAL);
      ^~~~~~~~
      CLD_NOOP
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-playback.c:2602:17: error: 'RTLD_LOCAL' was not declared in this scope
      RTLD_NOW | RTLD_LOCAL);
                 ^~~~~~~~~~
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-playback.c:2602:17: note: suggested alternative: 'TV_LOAD'
      RTLD_NOW | RTLD_LOCAL);
                 ^~~~~~~~~~
                 TV_LOAD
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-playback.c:2601:12: error: 'dlopen' was not declared in this scope
   handle = dlopen (m_tempdir->get_path_so_file (),
            ^~~~~~
/opt/local/var/macports/build/_opt_bblocal_var_buildworker_ports_build_ports_lang_gcc8/gcc8/work/gcc-8.4.0/gcc/jit/jit-playback.c:2601:12: note: suggested alternative: 'open'
   handle = dlopen (m_tempdir->get_path_so_file (),
            ^~~~~~
            open
make[3]: *** [jit/jit-playback.o] Error 1

[kencu (Ken)]

I understand the jit is mostly to support building some kind of lisp code compiler on to be used on emacs.

Hopefully this is isn't too hard to fix, with some missing header perhaps.

[chrstphrchvz (Christopher Chavez)]

These functions are defined in dlfcn.h; is that being properly included in ​gcc/system.h, which in turn jit-result.c and jit-playback.c include?

[kencu (Ken)]

include is being blocked somehow.

[kencu (Ken)]

Thre is some information about building gcc with the jit here <​https://gcc.gnu.org/onlinedocs/gcc-10.2.0/jit/internals/index.html>

[kencu (Ken)]

In 4903d86c02b74efdb94c1f40c158233816a8cebe/macports-ports (master):

gcc8: disable jit on i386

see: #61130

[kencu (Ken)]

so getting past the missing header was not hard:

--- gcc/jit/libgccjit.h.orig	2021-06-14 14:22:15.000000000 -0700
+++ gcc/jit/libgccjit.h	2021-06-14 14:22:49.000000000 -0700
@@ -22,6 +22,10 @@
 
 #include <stdio.h>
 
+#if defined (HAVE_DLFCN_H)
+#include <dlfcn.h>
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */

but that later led to this linkage failure anyway:

opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build/./prev-gcc/xg++ -B/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build/./prev-gcc/ -B/opt/local/i386-apple-darwin10/bin/ -nostdinc++ -B/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build/prev-i386-apple-darwin10/libstdc++-v3/src/.libs -B/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build/prev-i386-apple-darwin10/libstdc++-v3/libsupc++/.libs  -isystem /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build/prev-i386-apple-darwin10/libstdc++-v3/include/i386-apple-darwin10  -isystem /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build/prev-i386-apple-darwin10/libstdc++-v3/include  -isystem /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/gcc-8.5.0/libstdc++-v3/libsupc++ -L/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build/prev-i386-apple-darwin10/libstdc++-v3/src/.libs -L/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build/prev-i386-apple-darwin10/libstdc++-v3/libsupc++/.libs -fno-PIE -c  -DIN_GCC_FRONTEND -g -O2 -mdynamic-no-pic  -gtoggle -DIN_GCC -fPIC    -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   -DHAVE_CONFIG_H -I. -I. -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/gcc-8.5.0/gcc -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/gcc-8.5.0/gcc/. -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/gcc-8.5.0/gcc/../include -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/gcc-8.5.0/gcc/../libcpp/include -I/opt/local/include -I/opt/local/include -I/opt/local/include  -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/gcc-8.5.0/gcc/../libdecnumber -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/gcc-8.5.0/gcc/../libdecnumber/dpd -I../libdecnumber -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/gcc-8.5.0/gcc/../libbacktrace -I/opt/local/include  -o cc1-checksum.o -MT cc1-checksum.o -MMD -MP -MF ./.deps/cc1-checksum.TPo cc1-checksum.c
cc1plus: warning: '-mdynamic-no-pic' overrides '-fpic', '-fPIC', '-fpie' or '-fPIE'
ld: illegal text-relocation to attributes_table       in attribs.o from find_attribute_namespace(char const*) [clone .part.17] in attribs.o for architecture i386
collect2: error: ld returned 1 exit status
make[3]: *** [libgccjit.0.dylib] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build/gcc'
make[2]: *** [all-stage2-gcc] Error 2
make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build'
make[1]: *** [stage2-bubble] Error 2
make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build'
make: *** [bootstrap-lean] Error 2
make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build'
Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc8/gcc8/work/build" && /usr/bin/make -j4 -w bootstrap-lean 

and of course that ld: illegal text-relocation is a common error on i386 32 bit systems, but it just indicates that -- pretty sure -- nobody has ever built this libjit component for i386 darwin, or at least not in a while.

[kencu (Ken)]

This is as fixed as I will do here. If upstream fixes the build of libgccjit on i386 gcc8 (don't hold your breath) then I'll move that fix back down here to the ports tree.

[cooljeanius (Eric Gallager)]

Is there an upstream bug open about this?