[MacPorts] #36472: gdb build failure

[MacPorts]

#36472: gdb build failure
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  Reporter:  mk@…    |      Owner:  dweber@…
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:
      Port:  gdb     |
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Comment (by blair@…):

 I cannot tell what's causing it to fail, but my guess is you have a port
 that is providing a header file that gdb is picking up before its own.
 You'll need to look at the header files and see what it found versus what
 it expected.  What I normally do is have gcc/g++/clang/clang++ provided
 the output following the C-preprocessor phase so I can see the paths it
 picked up.  In your case, something like removing everything from `-c` to
 `.deps/amd64-tdep.Tpo` and replacing it with `-E` would help:

     /usr/bin/gcc-4.2 -pipe -O2 -I/opt/macports-test/include -arch x86_64
 -I. -I. -I./common -I./config -DLOCALEDIR="\"/opt/macports-
 test/share/locale\"" -DHAVE_CONFIG_H -I./../include/opcode
 -I./../opcodes/.. -I./../readline/.. -I../bfd -I./../bfd -I./../include
 -I../libdecnumber -I./../libdecnumber  -I./gnulib/import -Ibuild-
 gnulib/import   -DTUI=1  -I/opt/macports-test/include -I/opt/macports-
 test/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7
 -I/opt/macports-
 test/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7
 -Wall -Wdeclaration-after-statement -Wpointer-arith -Wformat-nonliteral
 -Wno-pointer-sign -Wno-unused -Wunused-value -Wunused-function -Wno-switch
 -Wno-char-subscripts -Wmissing-prototypes -Wdeclaration-after-statement
 -E amd64-tdep.c | less

 Something else to do is find all the .h files in gdb's source and use
 `find /opt/macports-test -name` to see if it's there also.

 Once you find the offending port, I can check for it in the Portfile to
 warn people that they'll need to have it deactivated.

 Blair

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Ticket URL: <https://trac.macports.org/ticket/36472#comment:3>
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