[MacPorts] #56941: cmake @3.12.0_0 and gcc7 @7.3.0_3 don't work well together

[MacPorts]

#56941: cmake @3.12.0_0 and gcc7 @7.3.0_3 don't work well together
-------------------------+-----------------------
  Reporter:  iqgrande    |      Owner:  michaelld
      Type:  defect      |     Status:  assigned
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.5.3
Resolution:              |   Keywords:
      Port:  cmake, gcc  |
-------------------------+-----------------------

Comment (by iqgrande):

 This may be related to a mpich-default ticket I opened today, too.
 Thoughts? Please note that I’ve recently (although not today) compiled
 source code with this compiler so a recent change has caused this issue.

 {{{
 /configure --prefix=/opt/local --build=x86_64-apple-darwin17 --enable-
 languages=c,c++,objc,obj-c++,lto,fortran --libdir=/opt/local/lib/gcc7
 --includedir=/opt/local/include/gcc7 --infodir=/opt/local/share/info
 --mandir=/opt/local/share/man --datarootdir=/opt/local/share/gcc-7 --with-
 local-prefix=/opt/local --with-system-zlib --disable-nls --program-
 suffix=-mp-7 --with-gxx-include-dir=/opt/local/include/gcc7/c++/ --with-
 gmp=/opt/local --with-mpfr=/opt/local --with-mpc=/opt/local --with-
 isl=/opt/local --enable-stage1-checking --disable-multilib --enable-lto
 --enable-libstdcxx-time --with-build-config=bootstrap-debug --with-
 as=/opt/local/bin/as --with-ld=/opt/local/bin/ld --with-
 ar=/opt/local/bin/ar --with-bugurl=https://trac.macports.org/newticket
 --disable-tls --with-pkgversion='MacPorts gcc7 7.3.0_3'
 Thread model: posix
 gcc version 7.3.0 (MacPorts gcc7 7.3.0_3)
 COLLECT_GCC_OPTIONS='-v' '-o' 'main.c.o' '-c' '-mmacosx-version-
 min=10.13.7' '-asm_macosx_version_min=10.13' '-mtune=core2'
  /opt/local/libexec/gcc/x86_64-apple-darwin17/7.3.0/cc1 -quiet -v
 -D__DYNAMIC__ ../main.c -fPIC -quiet -dumpbase main.c -mmacosx-version-
 min=10.13.7 -mtune=core2 -auxbase-strip main.c.o -version -o
 /var/folders/7n/vz1b562x5ndbhsn7rgz_nb840000gp/T//ccMULlRf.s
 GNU C11 (MacPorts gcc7 7.3.0_3) version 7.3.0 (x86_64-apple-darwin17)
         compiled by GNU C version 7.3.0, GMP version 6.1.2, MPFR version
 4.0.1, MPC version 1.1.0, isl version isl-0.18-GMP

 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
 ignoring nonexistent directory "/opt/local/lib/gcc7/gcc/x86_64-apple-
 darwin17/7.3.0/../../../../../x86_64-apple-darwin17/include"
 #include "..." search starts here:
 #include <...> search starts here:
  /opt/local/lib/gcc7/gcc/x86_64-apple-darwin17/7.3.0/include
  /opt/local/include
  /opt/local/lib/gcc7/gcc/x86_64-apple-darwin17/7.3.0/include-fixed
  /usr/include
  /System/Library/Frameworks
  /Library/Frameworks
 End of search list.
 GNU C11 (MacPorts gcc7 7.3.0_3) version 7.3.0 (x86_64-apple-darwin17)
         compiled by GNU C version 7.3.0, GMP version 6.1.2, MPFR version
 4.0.1, MPC version 1.1.0, isl version isl-0.18-GMP

 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
 Compiler executable checksum: 7d7bf4d385bfd70f2b699ee34f8bd5a4
 COLLECT_GCC_OPTIONS='-v' '-o' 'main.c.o' '-c' '-mmacosx-version-
 min=10.13.7'  '-mtune=core2'
  /opt/local/bin/as -arch x86_64 -v -force_cpusubtype_ALL -mmacosx-version-
 min=10.13 -o main.c.o
 /var/folders/7n/vz1b562x5ndbhsn7rgz_nb840000gp/T//ccMULlRf.s
 Apple Inc version cctools-895, GNU assembler version 1.38
 FATAL:/opt/local/bin/../libexec/as/x86_64/as: I don't understand 'm' flag!
 }}}

 {{{
 $ ls /usr/local/bin
 VBoxAutostart   VBoxVRDP        gs-X11          gslp            pfbtopfa
 ps2pdf12        texdist
 VBoxBalloonCtrl VirtualBox      gs-noX11        gsnd            pphs
 ps2pdf13        unix-lpr.sh
 VBoxBugReport   dvipdf          gsbj            lprsetup.sh     printafm
 ps2pdf14        vbox-img
 VBoxDTrace      eps2eps         gsdj            pdf2dsc         ps2ascii
 ps2pdfwr        vboxwebsrv
 VBoxHeadless    font2c          gsdj500         pdf2ps          ps2epsi
 ps2ps           wftopfa
 VBoxManage      gs              gslj            pf2afm          ps2pdf
 ps2ps2
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/56941#comment:12>
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