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The debugger fails to build when configure with --python-python=<path> where <path> is a non-system location. The reason is a warning made fatal due to the definition of _XOPEN_SOURCE inside pyconfig.h. This is exactly the same problem as with _POSIX_C_SOURCE, handled in python-internal.h as follow: | /* /usr/include/features.h on linux systems will define _POSIX_C_SOURCE | if it sees _GNU_SOURCE (which config.h will define). | pyconfig.h defines _POSIX_C_SOURCE to a different value than | /usr/include/features.h does causing compilation to fail. | To work around this, undef _POSIX_C_SOURCE before we include Python.h. */ | #undef _POSIX_C_SOURCE This patch fixes this problem the same way. 2010-06-30 Joel Brobecker <brobecker@adacore.com> * python/python-internal.h (_XOPEN_SOURCE): Undefine before including Python.h.