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Trying to compile gdb, with python support and by having it depend on Python 3.6 produces an error that the HAVE_LONG_LONG has been redefined [0].
This seems to have been introduced by this commit [1].
I'm in no way expert on gdb, but from what I could deduct from the build logs, the #define HAVE_LONG_LONG line in pyport.h [2] is the issue, as gdb also sets the same constant to 1 [3][4]
I build python and gdb as rpm's, but I can't verify if it happens as well outside this environment. Could someone more experienced with gdb take a look at it?
The issue seems to be fixed by wrapping the #define HAVE_LONG_LONG with an #ifndef HAVE_LONG_LONG
Attaching a patch for consideration
[0] https://copr-be.cloud.fedoraproject.org/results/cstratak/python3.6/fedora-26-x86_64/00485858-gdb/build.log.gz
[1] https://hg.python.org/cpython/rev/cf6e9968ebb7/
[2] https://hg.python.org/cpython/file/tip/Include/pyport.h#l42
[3] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob;f=gdb/config.in;h=3f8a72326b5d32db6ad8966c05045e248f955498;hb=HEAD#l282
[4] https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=blob;f=gdb/configure;h=6df88d9049b546a9e906b943f67374dc90d90d6d;hb=HEAD#l11662