[MacPorts] #58442: gcc9 (and other gccN) fails to install on Mojave, Xcode-10.2.1

[MacPorts]

#58442: gcc9 (and other gccN) fails to install on Mojave, Xcode-10.2.1
-------------------------+--------------------
  Reporter:  mouse07410  |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:
Resolution:              |   Keywords:
      Port:  gcc9        |
-------------------------+--------------------

Comment (by cjones051073):

 Replying to [comment:1 mouse07410]:
 > Why does {{{gcc9} port insist on building itself with Macports
 {{{clang-7.0}}}?
 > {{{
 > . . . . .
 > :info:build Stack dump:
 > :info:build 0.        Program arguments:
 /opt/local/libexec/llvm-7.0/bin/clang -cc1as -triple x86_64-apple-
 macosx10.5.0 -filetype obj -main-file-name - -target-cpu core2 -I . -I .
 -I ../.././gcc -I
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/gcc9/work/gcc-9.1.0/libgcc
 -I
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/gcc9/work/gcc-9.1.0/libgcc/.
 -I
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/gcc9/work/gcc-9.1.0/libgcc/../gcc
 -I
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/gcc9/work/gcc-9.1.0/libgcc/../include
 -fdebug-compilation-dir
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/gcc9/work/build/x86_64
 -apple-darwin18/libgcc -dwarf-debug-producer clang version 7.0.1
 (tags/RELEASE_701/final) -I . -I . -I ../.././gcc -I
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/gcc9/work/gcc-9.1.0/libgcc
 -I
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/gcc9/work/gcc-9.1.0/libgcc/.
 -I
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/gcc9/work/gcc-9.1.0/libgcc/../gcc
 -I
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_lang_gcc9/gcc9/work/gcc-9.1.0/libgcc/../include
 -dwarf-version=2 -mrelocation-model pic -o cpuinfo_s.o -
 > :info:build 0  libLLVM.dylib            0x000000010f618f60
 llvm::sys::PrintStackTrace(llvm::raw_ostream&) + 37
 > :info:build 1  libLLVM.dylib            0x000000010f619351
 SignalHandler(int) + 200
 > :info:build 2  libsystem_platform.dylib 0x00007fff60ca0b5d _sigtramp +
 29
 > :info:build 3  libsystem_platform.dylib 0x0000000119c9d938 _sigtramp +
 3103772152
 > :info:build 4  libsystem_c.dylib        0x00007fff60b606a6 abort + 127
 > :info:build 5  libsystem_c.dylib        0x00007fff60b2920d basename_r +
 0
 > :info:build 6  libLLVM.dylib            0x00000001101f8b29 (anonymous
 namespace)::MCMachOStreamer::ChangeSection(llvm::MCSection*, llvm::MCExpr
 const*) + 793
 > :info:build 7  libLLVM.dylib            0x0000000110206239
 llvm::MCStreamer::SwitchSection(llvm::MCSection*, llvm::MCExpr const*) +
 97
 > :info:build 8  libLLVM.dylib            0x000000011023d45b (anonymous
 namespace)::DarwinAsmParser::parseSectionSwitch(llvm::StringRef,
 llvm::StringRef, unsigned int, unsigned int, unsigned int) + 201
 > :info:build 9  libLLVM.dylib            0x000000011023dc9e bool
 llvm::MCAsmParserExtension::HandleDirective<(anonymous
 namespace)::DarwinAsmParser, &((anonymous
 namespace)::DarwinAsmParser::parseSectionDirectiveModInitFunc(llvm::StringRef,
 llvm::SMLoc))>(llvm::MCAsmParserExtension*, llvm::StringRef, llvm::SMLoc)
 + 44
 > :info:build 10 libLLVM.dylib            0x0000000110226b85 (anonymous
 namespace)::AsmParser::parseStatement((anonymous
 namespace)::ParseStatementInfo&, llvm::MCAsmParserSemaCallback*) + 2127
 > :info:build 11 libLLVM.dylib            0x0000000110222a67 (anonymous
 namespace)::AsmParser::Run(bool, bool) + 395
 > :info:build 12 clang                    0x000000010db428d0
 cc1as_main(llvm::ArrayRef<char const*>, char const*, void*) + 10156
 > :info:build 13 clang                    0x000000010db3db6b main + 7864
 > :info:build 14 libdyld.dylib            0x00007fff60abb3d5 start + 1
 > :info:build 15 libdyld.dylib            0x0000000000000030 start +
 2673101916
 > :info:build clang: error: unable to execute command: Abort trap: 6
 > :info:build clang: error: clang integrated assembler command failed due
 to signal (use -v to see invocation)
 > :info:build clang version 7.0.1 (tags/RELEASE_701/final)
 > :info:build Target: x86_64-apple-darwin18.5.0
 > :info:build Thread model: posix
 > :info:build InstalledDir: /opt/local/libexec/llvm-7.0/bin
 > :info:build clang: note: diagnostic msg: PLEASE submit a bug report to
 https://bugs.llvm.org/ and include the crash backtrace, preprocessed
 source, and associated run script.
 > :info:build clang: note: diagnostic msg: Error generating preprocessed
 source(s) - no preprocessable inputs.
 > :info:build make[3]: *** [cpuinfo_s.o] Error 1
 > }}}
 >
 > Here's my "normal" setup:
 > {{{
 > $ port select --list clang
 > Available versions for clang:
 >       apple-clang (active)
 >       mp-clang-6.0
 >       mp-clang-7.0
 >       mp-clang-8.0
 >       none
 > $ port select --list llvm
 > Available versions for llvm:
 >       mp-llvm-6.0
 >       mp-llvm-7.0
 >       mp-llvm-8.0
 >       none (active)
 > $
 > }}}
 >
 > I tried installing gcc9 with setting {{{mp-llvm-7.0}}} and {{{mp-
 clang-7.0}}} as default - with the same bad result.

 Having anything 'port selected' is not the default. Its not how the
 buildbots run, nor how I work. If I want macports clang (or gcc) I
 directly use the named command, like g++-mp-9, or clang++-mp-8.0

 Please could you try removing any 'port select' you might have for gcc,
 llvm or clang (select none for them all) then try again ?

-- 
Ticket URL: <https://trac.macports.org/ticket/58442#comment:27>
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