erlang: build error when /opt/local/bin/gcc exists

[constcast (Lothar Braun)]

Hi,

when I try to install the erlang port on Mac OS X Lion, I run into the following compile error (full log attached):

:info:build /opt/local/bin/gcc  -mdynamic-no-pic -Ipcre -m64 -pipe  -O3 -fomit-frame-pointer -arch x86_64 -I/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_erlang/erlang/work/erlang-R15B/erts/i386-apple-darwin11.2.0  -I/opt/local/include -D_XOPEN_SOURCE -DERTS_SMP -DHAVE_CONFIG_H -Wall -Wstrict-prototypes -Wmissing-prototypes -Wdeclaration-after-statement -DUSE_THREADS -D_THREAD_SAFE -D_REENTRANT -DPOSIX_THREADS  -Ii386-apple-darwin11.2.0/opt/smp -Ibeam -Isys/unix -Isys/common -Ii386-apple-darwin11.2.0 -Izlib  -Ipcre -Ihipe -I../include -I../include/i386-apple-darwin11.2.0 -I../include/internal -I../include/internal/i386-apple-darwin11.2.0 -c beam/beam_emu.c -o obj/i386-apple-darwin11.2.0/opt/smp/beam_emu.o
:info:build cc1: error: unrecognized command line option "-mdynamic-no-pic"
:info:build cc1: error: unrecognized command line option "-arch"
:info:build make[3]: *** [obj/i386-apple-darwin11.2.0/opt/smp/beam_emu.o] Error 1
:info:build make[3]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_erlang/erlang/work/erlang-R15B/erts/emulator'
:info:build make[2]: *** [opt] Error 2
:info:build make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_erlang/erlang/work/erlang-R15B/erts/emulator'
:info:build make[1]: *** [smp] Error 2
:info:build make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_erlang/erlang/work/erlang-R15B/erts'
:info:build make: *** [emulator] Error 2
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_erlang/erlang/work/erlang-R15B'
:info:build shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_erlang/erlang/work/erlang-R15B" && /usr/bin/make -w all " returned error 2
:error:build Target org.macports.build returned: shell command failed (see log for details)
:debug:build Backtrace: shell command failed (see log for details)
    while executing
"command_exec build"
    (procedure "portbuild::build_main" line 8)
    invoked from within
"$procedure $targetname"
:info:build Warning: the following items did not execute (for erlang): org.macports.activate org.macports.build org.macports.destroot org.macports.install
:notice:build Log for erlang is at: /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_lang_erlang/erlang/main.log

To me it looks like a compiler problem. Might this be related to Ticket #31698?

[constcast (Lothar Braun)]

Cc Me!

[ryandesign (Ryan Carsten Schmidt)]

The problem is that /opt/local/bin/gcc exists, and that erlang is using it. Presumably you have used "sudo port select gcc" to select a different compiler. (Which one?) The workaround is to use "sudo port select gcc" again to select the default compiler (or simply remove /opt/local/bin/gcc), then clean erlang and try again. The real fix will be to make erlang ensure it's UsingTheRightCompiler.