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dnl a macro to check for ability to create python extensions
dnl AM_CHECK_PYTHON_HEADERS([ACTION-IF-POSSIBLE], [ACTION-IF-NOT-POSSIBLE])
dnl function also defines PYTHON_INCLUDES
dnl update taken from dbus-python(GPL).
AC_DEFUN([AM_CHECK_PYTHON_HEADERS],
[AC_REQUIRE([AM_PATH_PYTHON])
AC_PATH_PROGS([PYTHON_CONFIG], [python${PYTHON_VERSION}-config python-config], [no])
if test "${PYTHON_CONFIG}" = "no"; then
AC_MSG_ERROR([cannot find python${PYTHON_VERSION}-config or python-config in PATH])
fi
AC_ARG_VAR([PYTHON_INCLUDES], [CPPFLAGS for Python, overriding output of python2.x-config --includes, e.g. "-I/opt/misc/include/python2.7"])
if test "${PYTHON_INCLUDES+set}" = set; then
AC_MSG_NOTICE([PYTHON_INCLUDES overridden to: $PYTHON_INCLUDES])
else
dnl deduce PYTHON_INCLUDES
AC_MSG_CHECKING(for Python headers using $PYTHON_CONFIG --includes)
PYTHON_INCLUDES=`$PYTHON_CONFIG --includes`
if test $? = 0; then
AC_MSG_RESULT($PYTHON_INCLUDES)
else
AC_MSG_RESULT([failed, will try another way])
py_prefix=`$PYTHON -c "import sys; print(sys.prefix)"`
py_exec_prefix=`$PYTHON -c "import sys; print(sys.exec_prefix)"`
AC_MSG_CHECKING(for Python headers in $py_prefix and $py_exec_prefix)
PYTHON_INCLUDES="-I${py_prefix}/include/python${PYTHON_VERSION}"
if test "$py_prefix" != "$py_exec_prefix"; then
PYTHON_INCLUDES="$PYTHON_INCLUDES -I${py_exec_prefix}/include/python${PYTHON_VERSION}"
fi
AC_MSG_RESULT($PYTHON_INCLUDES)
fi
fi
AC_MSG_CHECKING(whether those headers are sufficient)
AC_SUBST(PYTHON_INCLUDES)
dnl check if the headers exist:
save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $PYTHON_INCLUDES"
AC_TRY_CPP([#include <Python.h>],dnl
[AC_MSG_RESULT(found)
$1],dnl
[AC_MSG_RESULT(not found)
$2])
CPPFLAGS="$save_CPPFLAGS"
])
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