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+# Copyright 2012, 2013, 2014 Brandon Invergo <brandon@invergo.net>
+#
+# This file is part of pyconfigure. This program is free
+# software; you can redistribute it and/or modify it under the
+# terms of the GNU General Public License as published by the
+# Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# Under Section 7 of GPL version 3, you are granted additional
+# permissions described in the Autoconf Configure Script Exception,
+# version 3.0, as published by the Free Software Foundation.
+#
+# You should have received a copy of the GNU General Public License
+# and a copy of the Autoconf Configure Script Exception along with
+# this program; see the files COPYINGv3 and COPYING.EXCEPTION
+# respectively. If not, see <http://www.gnu.org/licenses/>.
+
+
+# Many of these macros were adapted from ones written by Andrew Dalke
+# and James Henstridge and are included with the Automake utility
+# under the following copyright terms:
+#
+# Copyright (C) 1999-2012 Free Software Foundation, Inc.
+#
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# Table of Contents:
+#
+# 1. Language selection
+# and routines to produce programs in a given language.
+#
+# 2. Producing programs in a given language.
+#
+# 3. Looking for a compiler
+# And possibly the associated preprocessor.
+#
+# 4. Looking for specific libs & functionality
+
+
+## ----------------------- ##
+## 1. Language selection. ##
+## ----------------------- ##
+
+
+# AC_LANG(Python)
+# ---------------
+AC_LANG_DEFINE([Python], [py], [PY], [PYTHON], [],
+[ac_ext=py
+ac_compile='chmod +x conftest.$ac_ext >&AS_MESSAGE_LOG_FD'
+ac_link='chmod +x conftest.$ac_ext && cp conftest.$ac_ext conftest >&AS_MESSAGE_LOG_FD'
+])
+
+
+# AC_LANG_PYTHON
+# --------------
+AU_DEFUN([AC_LANG_PYTHON], [AC_LANG(Python)])
+
+
+## ----------------------- ##
+## 2. Producing programs. ##
+## ----------------------- ##
+
+
+# AC_LANG_PROGRAM(Python)([PROLOGUE], [BODY])
+# -------------------------------------------
+m4_define([AC_LANG_PROGRAM(Python)], [dnl
+@%:@!$PYTHON
+$1
+m4_if([$2], [], [], [dnl
+if __name__ == '__main__':
+$2])])
+
+
+# _AC_LANG_IO_PROGRAM(Python)
+# ---------------------------
+# Produce source that performs I/O.
+m4_define([_AC_LANG_IO_PROGRAM(Python)],
+[AC_LANG_PROGRAM([dnl
+import sys
+try:
+ h = open('conftest.out')
+except:
+ sys.exit(1)
+else:
+ close(h)
+ sys.exit(0)
+], [])])
+
+
+# _AC_LANG_CALL(Python)([PROLOGUE], [FUNCTION])
+# ---------------------
+# Produce source that calls FUNCTION
+m4_define([_AC_LANG_CALL(Python)],
+[AC_LANG_PROGRAM([$1], [$2])])
+
+
+## -------------------------------------------- ##
+## 3. Looking for Compilers and Interpreters. ##
+## -------------------------------------------- ##
+
+
+AC_DEFUN([AC_LANG_COMPILER(Python)],
+[AC_REQUIRE([PC_PROG_PYTHON])])
+
+
+# PC_INIT([MIN-VERSION], [MAX-VERSION])
+# -----------------------------
+# Initialize pyconfigure, finding a Python interpreter with a given
+# minimum and/or maximum version.
+AC_DEFUN([PC_INIT],
+[PC_PROG_PYTHON([], [$1], [$2])
+dnl If we found something, do a sanity check that the interpreter really
+dnl has the version its name would suggest.
+m4_ifval([PYTHON],
+ [PC_PYTHON_VERIFY_VERSION([>=], [pc_min_ver], [],
+ [AC_MSG_FAILURE([No compatible Python interpreter found. If you're sure that you have one, try setting the PYTHON environment variable to the location of the interpreter.])])])
+m4_ifval([PYTHON],
+ [PC_PYTHON_VERIFY_VERSION([<=], [pc_max_ver], [],
+ [AC_MSG_FAILURE([No compatible Python interpreter found. If you're sure that you have one, try setting the PYTHON environment variable to the location of the interpreter.])])])
+])# PC_INIT
+
+# PC_PROG_PYTHON([PROG-TO-CHECK-FOR], [MIN-VERSION], [MAX-VERSION])
+# ---------------------------------
+# Find a Python interpreter. Python versions prior to 2.0 are not
+# supported. (2.0 was released on October 16, 2000).
+AC_DEFUN_ONCE([PC_PROG_PYTHON],
+[AC_ARG_VAR([PYTHON], [the Python interpreter])
+dnl The default minimum version is 2.0
+m4_define_default([pc_min_ver], m4_ifval([$2], [$2], [2.0]))
+dnl The default maximum version is 3.3
+m4_define_default([pc_max_ver], m4_ifval([$3], [$3], [4.0]))
+dnl Build up a list of possible interpreter names.
+m4_define_default([_PC_PYTHON_INTERPRETER_LIST],
+ [dnl If we want some Python 3 versions (max version >= 3.0),
+dnl also search for "python3"
+ m4_if(m4_version_compare(pc_max_ver, [2.9]), [1], [python3], []) \
+dnl If we want some Python 2 versions (min version <= 2.7),
+dnl also search for "python2".
+ m4_if(m4_version_compare(pc_min_ver, [2.8]), [-1], [python2], []) \
+dnl Construct a comma-separated list of interpreter names (python2.6,
+dnl python2.7, etc). We only care about the first 3 characters of the
+dnl version strings (major-dot-minor; not
+dnl major-dot-minor-dot-bugfix[-dot-whatever])
+ m4_foreach([pc_ver],
+ m4_esyscmd_s(seq -s[[", "]] -f["[[%.1f]]"] m4_substr(pc_max_ver, [0], [3]) -0.1 m4_substr(pc_min_ver, [0], [3])),
+dnl Remove python2.8 and python2.9 since they will never exist
+ [m4_bmatch(pc_ver, [2.[89]], [], [python]pc_ver)]) \
+ [python]])
+dnl Do the actual search at last.
+m4_ifval([$1],
+ [AC_PATH_PROGS(PYTHON, [$1 _PC_PYTHON_INTERPRETER_LIST])],
+ [AC_PATH_PROGS(PYTHON, [_PC_PYTHON_INTERPRETER_LIST])])
+])# PC_PROG_PYTHON
+
+
+# PC_PYTHON_PROG_PYTHON_CONFIG(PROG-TO-CHECK-FOR)
+# ----------------------------------------------
+# Find the python-config program
+AC_DEFUN([PC_PYTHON_PROG_PYTHON_CONFIG],
+[AC_REQUIRE([PC_PROG_PYTHON])[]dnl
+AC_ARG_VAR([PYTHON_CONFIG], [the Python-config program])
+dnl python-config's binary name is normally based on the Python interpreter's
+dnl binary name (i.e. python2.7 -> python2.7-config)
+m4_define([_PYTHON_BASENAME], [`basename $PYTHON`])
+m4_ifval([$1],
+ [AC_PATH_PROGS(PYTHON_CONFIG, [$1 _PYTHON_BASENAME-config])],
+ [AC_PATH_PROG(PYTHON_CONFIG, _PYTHON_BASENAME-config)])
+]) # PC_PYTHON_PROG_PYTHON_CONFIG
+
+
+# PC_PYTHON_VERIFY_VERSION([RELATION], [VERSION], [ACTION-IF-TRUE], [ACTION-IF-FALSE])
+# ---------------------------------------------------------------------------
+# Run ACTION-IF-TRUE if the Python interpreter PROG has version [RELATION] VERSION.
+# i.e if RELATION is "<", check if PROG has a version number less than VERSION.
+# Run ACTION-IF-FALSE otherwise.
+# Specify RELATION as any mathematical comparison "<", ">", "<=", ">=", "==" or "!="
+# This test uses sys.hexversion instead of the string equivalent (first
+# word of sys.version), in order to cope with versions such as 2.2c1.
+# This supports Python 2.0 or higher. (2.0 was released on October 16, 2000).
+AC_DEFUN([PC_PYTHON_VERIFY_VERSION],
+[m4_define([pc_python_safe_ver], m4_bpatsubsts($2, [\.], [_]))
+AC_CACHE_CHECK([if Python $1 '$2'],
+ [[pc_cv_python_req_version_]pc_python_safe_ver],
+ [AC_LANG_PUSH(Python)[]dnl
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([dnl
+import sys
+], [dnl
+ # split strings by '.' and convert to numeric. Append some zeros
+ # because we need at least 4 digits for the hex conversion.
+ # map returns an iterator in Python 3.0 and a list in 2.x
+ reqver = list(map(int, '$2'.split('.'))) + [[0, 0, 0]]
+ reqverhex = 0
+ # xrange is not present in Python 3.0 and range returns an iterator
+ for i in list(range(4)):
+ reqverhex = (reqverhex << 8) + reqver[[i]]
+ # the final 8 bits are "0xf0" for final versions, which are all
+ # we'll test against, since it's doubtful that a released software
+ # will depend on an alpha- or beta-state Python.
+ reqverhex += 0xf0
+ if sys.hexversion $1 reqverhex:
+ sys.exit()
+ else:
+ sys.exit(1)
+])],
+ [[pc_cv_python_req_version_]pc_python_safe_ver=yes],
+ [[pc_cv_python_req_version_]pc_python_safe_ver=no])
+ AC_LANG_POP(Python)[]dnl
+ ])
+AS_IF([test "$[pc_cv_python_req_version_]pc_python_safe_ver" = "no"], [$4], [$3])
+])# PC_PYTHON_VERIFY_VERSION
+
+
+# PC_PYTHON_CHECK_VERSION
+# -----------------------
+# Query Python for its version number. Getting [:3] seems to be
+# the best way to do this; it's what "site.py" does in the standard
+# library.
+AC_DEFUN([PC_PYTHON_CHECK_VERSION],
+[AC_REQUIRE([PC_PROG_PYTHON])[]dnl
+AC_CACHE_CHECK([for $1 version],
+ [pc_cv_python_version],
+ [AC_LANG_PUSH(Python)[]dnl
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([dnl
+import sys
+], [dnl
+ sys.stdout.write(sys.version[[:3]])
+])],
+ [pc_cv_python_version=`./conftest`],
+ [AC_MSG_FAILURE([failed to run Python program])])
+ AC_LANG_POP(Python)[]dnl
+ ])
+AC_SUBST([PYTHON_VERSION], [$pc_cv_python_version])
+])# PC_PYTHON_CHECK_VERSION
+
+
+# PC_PYTHON_CHECK_PREFIX
+# ----------------------
+# Use the value of $prefix for the corresponding value of
+# PYTHON_PREFIX. This is made a distinct variable so it can be
+# overridden if need be. However, general consensus is that you
+# shouldn't need this ability.
+AC_DEFUN([PC_PYTHON_CHECK_PREFIX],
+[AC_REQUIRE([PC_PYTHON_PROG_PYTHON_CONFIG])[]dnl
+dnl Try to get it with python-config otherwise do it from within Python
+AC_CACHE_CHECK([for Python prefix], [pc_cv_python_prefix],
+[if test -x "$PYTHON_CONFIG"; then
+ pc_cv_python_prefix=`$PYTHON_CONFIG --prefix 2>&AS_MESSAGE_LOG_FD`
+else
+ AC_LANG_PUSH(Python)[]dnl
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([dnl
+import sys
+], [dnl
+ sys.stdout.write(sys.prefix)
+])], [pc_cv_python_prefix=`./conftest`;
+ if test $? != 0; then
+ AC_MSG_FAILURE([could not determine Python prefix])
+ fi],
+ [AC_MSG_FAILURE([failed to run Python program])])
+ AC_LANG_POP(Python)[]dnl
+fi])
+AC_SUBST([PYTHON_PREFIX], [$pc_cv_python_prefix])])
+
+
+# PC_PYTHON_CHECK_EXEC_PREFIX
+# --------------------------
+# Like above, but for $exec_prefix
+AC_DEFUN([PC_PYTHON_CHECK_EXEC_PREFIX],
+[AC_REQUIRE([PC_PYTHON_PROG_PYTHON_CONFIG])[]dnl
+dnl Try to get it with python-config otherwise do it from within Python
+AC_CACHE_CHECK([for Python exec-prefix], [pc_cv_python_exec_prefix],
+[if test -x "$PYTHON_CONFIG"; then
+ pc_cv_python_exec_prefix=`$PYTHON_CONFIG --exec-prefix 2>&AS_MESSAGE_LOG_FD`
+else
+ AC_LANG_PUSH(Python)[]dnl
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([dnl
+import sys
+], [dnl
+ sys.stdout.write(sys.exec_prefix)
+])],
+ [pc_cv_python_exec_prefix=`./conftest`;
+ if test $? != 0; then
+ AC_MSG_FAILURE([could not determine Python exec_prefix])
+ fi],
+ [AC_MSG_FAILURE([failed to run Python program])])
+ AC_LANG_POP(Python)[]dnl
+fi
+])
+AC_SUBST([PYTHON_EXEC_PREFIX], [$pc_cv_python_exec_prefix])])
+
+
+# PC_PYTHON_CHECK_INCLUDES
+# ------------------------
+# Find the Python header file include flags (ie
+# '-I/usr/include/python')
+AC_DEFUN([PC_PYTHON_CHECK_INCLUDES],
+[AC_REQUIRE([PC_PYTHON_PROG_PYTHON_CONFIG])[]dnl
+dnl Try to find the headers location with python-config otherwise guess
+AC_CACHE_CHECK([for Python includes], [pc_cv_python_includes],
+[if test -x "$PYTHON_CONFIG"; then
+ pc_cv_python_includes=`$PYTHON_CONFIG --includes 2>&AS_MESSAGE_LOG_FD`
+else
+ pc_cv_python_includes="[-I$includedir/$_PYTHON_BASENAME]m4_ifdef(PYTHON_ABI_FLAGS,
+ PYTHON_ABI_FLAGS,)"
+fi
+])
+AC_SUBST([PYTHON_INCLUDES], [$pc_cv_python_includes])])
+
+
+# PC_PYTHON_CHECK_HEADERS([ACTION-IF-PRESENT], [ACTION-IF-ABSENT])
+# -----------------------
+# Check for the presence and usability of Python.h
+AC_DEFUN([PC_PYTHON_CHECK_HEADERS],
+[AC_REQUIRE([PC_PYTHON_CHECK_INCLUDES])[]dnl
+pc_cflags_store=$CPPFLAGS
+CPPFLAGS="$CFLAGS $PYTHON_INCLUDES"
+AC_CHECK_HEADER([Python.h], [$1], [$2])
+CPPFLAGS=$pc_cflags_store
+])
+
+
+# PC_PYTHON_CHECK_LIBS
+# --------------------
+# Find the Python lib flags (ie '-lpython')
+AC_DEFUN([PC_PYTHON_CHECK_LIBS],
+[AC_REQUIRE([PC_PYTHON_PROG_PYTHON_CONFIG])[]dnl
+dnl Try to find the lib flags with python-config otherwise guess
+AC_CACHE_CHECK([for Python libs], [pc_cv_python_libs],
+[if test -x "$PYTHON_CONFIG"; then
+ pc_cv_python_libs=`$PYTHON_CONFIG --libs 2>&AS_MESSAGE_LOG_FD`
+else
+ pc_cv_python_libs="[-l$_PYTHON_BASENAME]m4_ifdef(PYTHON_ABI_FLAGS, PYTHON_ABI_FLAGS,)"
+fi
+])
+AC_SUBST([PYTHON_LIBS], [$pc_cv_python_libs])])
+
+
+# PC_PYTHON_TEST_LIBS(LIBRARY-FUNCTION, [ACTION-IF-PRESENT], [ACTION-IF-ABSENT])
+# -------------------
+# Verify that the Python libs can be loaded
+AC_DEFUN([PC_PYTHON_TEST_LIBS],
+[AC_REQUIRE([PC_PYTHON_CHECK_LIBS])[]dnl
+pc_libflags_store=$LIBS
+for lflag in $PYTHON_LIBS; do
+ case $lflag in
+ -lpython*@:}@
+ LIBS="$LIBS $lflag"
+ pc_libpython=`echo $lflag | sed -e 's/^-l//'`
+ ;;
+ *@:}@;;
+ esac
+done
+AC_CHECK_LIB([$pc_libpython], [$1], [$2], [$3])])
+
+
+# PC_PYTHON_CHECK_CFLAGS
+# ----------------------
+# Find the Python CFLAGS
+AC_DEFUN([PC_PYTHON_CHECK_CFLAGS],
+[AC_REQUIRE([PC_PYTHON_PROG_PYTHON_CONFIG])[]dnl
+dnl Try to find the CFLAGS with python-config otherwise give up
+AC_CACHE_CHECK([for Python CFLAGS], [pc_cv_python_cflags],
+[if test -x "$PYTHON_CONFIG"; then
+ pc_cv_python_cflags=`$PYTHON_CONFIG --cflags 2>&AS_MESSAGE_LOG_FD`
+else
+ pc_cv_python_cflags=
+fi
+])
+AC_SUBST([PYTHON_CFLAGS], [$pc_cv_python_cflags])])
+
+
+# PC_PYTHON_CHECK_LDFLAGS
+# -----------------------
+# Find the Python LDFLAGS
+AC_DEFUN([PC_PYTHON_CHECK_LDFLAGS],
+[AC_REQUIRE([PC_PYTHON_PROG_PYTHON_CONFIG])[]dnl
+dnl Try to find the LDFLAGS with python-config otherwise give up
+AC_CACHE_CHECK([for Python LDFLAGS], [pc_cv_python_ldflags],
+[if test -x "$PYTHON_CONFIG"; then
+ pc_cv_python_ldflags=`$PYTHON_CONFIG --ldflags 2>&AS_MESSAGE_LOG_FD`
+else
+ pc_cv_python_ldflags=
+fi
+])
+AC_SUBST([PYTHON_LDFLAGS], [$pc_cv_python_ldflags])])
+
+
+# PC_PYTHON_CHECK_EXTENSION_SUFFIX
+# --------------------------------
+# Find the Python extension suffix (i.e. '.cpython-32.so')
+AC_DEFUN([PC_PYTHON_CHECK_EXTENSION_SUFFIX],
+[AC_REQUIRE([PC_PYTHON_PROG_PYTHON_CONFIG])[]dnl
+dnl Try to find the suffix with python-config otherwise give up
+AC_CACHE_CHECK([for Python extension suffix], [pc_cv_python_extension_suffix],
+[if test -x "$PYTHON_CONFIG"; then
+ pc_cv_python_extension_suffix=`$PYTHON_CONFIG --extension-suffix 2>&AS_MESSAGE_LOG_FD`
+else
+ pc_cv_python_extension_suffix=
+fi
+])
+AC_SUBST([PYTHON_EXTENSION_SUFFIX], [$pc_cv_python_extension_suffix])])
+
+
+# PC_PYTHON_CHECK_ABI_FLAGS
+# -------------------------
+# Find the Python ABI flags
+AC_DEFUN([PC_PYTHON_CHECK_ABI_FLAGS],
+[AC_REQUIRE([PC_PYTHON_PROG_PYTHON_CONFIG])[]dnl
+dnl Try to find the ABI flags with python-config otherwise give up
+AC_CACHE_CHECK([for Python ABI flags], [pc_cv_python_abi_flags],
+[if test -x "$PYTHON_CONFIG"; then
+ pc_cv_python_abi_flags=`$PYTHON_CONFIG --abiflags 2>&AS_MESSAGE_LOG_FD`
+else
+ pc_cv_python_abi_flags=
+fi
+])
+AC_SUBST([PYTHON_ABI_FLAGS], [$pc_cv_python_abi_flags])])
+
+
+# PC_PYTHON_CHECK_PLATFORM
+# ------------------------
+# At times (like when building shared libraries) you may want
+# to know which OS platform Python thinks this is.
+AC_DEFUN([PC_PYTHON_CHECK_PLATFORM],
+[AC_REQUIRE([PC_PROG_PYTHON])[]dnl
+dnl Get the platform from within Python (sys.platform)
+AC_CACHE_CHECK([for Python platform], [pc_cv_python_platform],
+ [AC_LANG_PUSH(Python)[]dnl
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([dnl
+import sys
+], [dnl
+ sys.stdout.write(sys.platform)
+])], [pc_cv_python_platform=`./conftest`;
+ if test $? != 0; then
+ AC_MSG_FAILURE([could not determine Python platform])
+ fi],
+ [AC_MSG_FAILURE([failed to run Python program])])
+ AC_LANG_POP(Python)[]dnl
+ ])
+AC_SUBST([PYTHON_PLATFORM], [$pc_cv_python_platform])
+])
+
+
+# PC_PYTHON_CHECK_SITE_DIR
+# ---------------------
+# The directory to which new libraries are installed (i.e. the
+# "site-packages" directory.
+AC_DEFUN([PC_PYTHON_CHECK_SITE_DIR],
+[AC_REQUIRE([PC_PROG_PYTHON])AC_REQUIRE([PC_PYTHON_CHECK_PREFIX])[]dnl
+AC_CACHE_CHECK([for Python site-packages directory],
+ [pc_cv_python_site_dir],
+ [AC_LANG_PUSH(Python)[]dnl
+ if test "x$prefix" = xNONE
+ then
+ pc_py_prefix=$ac_default_prefix
+ else
+ pc_py_prefix=$prefix
+ fi
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([dnl
+import sys
+from platform import python_implementation
+# sysconfig in CPython 2.7 doesn't work in virtualenv
+# <https://github.com/pypa/virtualenv/issues/118>
+try:
+ import sysconfig
+except:
+ can_use_sysconfig = False
+else:
+ can_use_sysconfig = True
+if can_use_sysconfig:
+ if python_implementation() == "CPython" and sys.version[[:3]] == '2.7':
+ can_use_sysconfig = False
+if not can_use_sysconfig:
+ from distutils import sysconfig
+ sitedir = sysconfig.get_python_lib(False, False, prefix='$pc_py_prefix')
+else:
+ sitedir = sysconfig.get_path('purelib', vars={'base':'$pc_py_prefix'})
+], [dnl
+ sys.stdout.write(sitedir)
+])], [pc_cv_python_site_dir=`./conftest`],
+ [AC_MSG_FAILURE([failed to run Python program])])
+ AC_LANG_POP(Python)[]dnl
+ case $pc_cv_python_site_dir in
+ $pc_py_prefix*)
+ pc__strip_prefix=`echo "$pc_py_prefix" | sed 's|.|.|g'`
+ pc_cv_python_site_dir=`echo "$pc_cv_python_site_dir" | sed "s,^$pc__strip_prefix/,,"`
+ ;;
+ *)
+ case $pc_py_prefix in
+ /usr|/System*) ;;
+ *)
+ pc_cv_python_site_dir=lib/python$PYTHON_VERSION/site-packages
+ ;;
+ esac
+ ;;
+ esac
+ ])
+AC_SUBST([pythondir], [\${prefix}/$pc_cv_python_site_dir])])# PC_PYTHON_CHECK_SITE_DIR
+
+# PC_PYTHON_SITE_PACKAGE_DIR
+# --------------------------
+# $PACKAGE directory under PYTHON_SITE_DIR
+AC_DEFUN([PC_PYTHON_SITE_PACKAGE_DIR],
+[AC_REQUIRE([PC_PYTHON_CHECK_SITE_DIR])[]dnl
+AC_SUBST([pkgpythondir], [\${pythondir}/$PACKAGE_NAME])])
+
+
+# PC_PYTHON_CHECK_EXEC_DIR
+# ------------------------
+# directory for installing python extension modules (shared libraries)
+AC_DEFUN([PC_PYTHON_CHECK_EXEC_DIR],
+[AC_REQUIRE([PC_PROG_PYTHON])AC_REQUIRE([PC_PYTHON_CHECK_EXEC_PREFIX])[]dnl
+ AC_CACHE_CHECK([for Python extension module directory],
+ [pc_cv_python_exec_dir],
+ [AC_LANG_PUSH(Python)[]dnl
+ if test "x$pc_cv_python_exec_prefix" = xNONE
+ then
+ pc_py_exec_prefix=$pc_cv_python_prefix
+ else
+ pc_py_exec_prefix=$pc_cv_python_exec_prefix
+ fi
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([dnl
+import sys
+from platform import python_implementation
+# sysconfig in CPython 2.7 doesn't work in virtualenv
+# <https://github.com/pypa/virtualenv/issues/118>
+try:
+ import sysconfig
+except:
+ can_use_sysconfig = False
+else:
+ can_use_sysconfig = True
+if can_use_sysconfig:
+ if python_implementation() == "CPython" and sys.version[[:3]] == '2.7':
+ can_use_sysconfig = False
+if not can_use_sysconfig:
+ from distutils import sysconfig
+ sitedir = sysconfig.get_python_lib(False, False, prefix='$pc_py__exec_prefix')
+else:
+ sitedir = sysconfig.get_path('purelib', vars={'platbase':'$pc_py_exec_prefix'})
+], [dnl
+ sys.stdout.write(sitedir)
+])], [pc_cv_python_exec_dir=`./conftest`],
+ [AC_MSG_FAILURE([failed to run Python program])])
+ AC_LANG_POP(Python)[]dnl
+ case $pc_cv_python_exec_dir in
+ $pc_py_exec_prefix*)
+ pc__strip_prefix=`echo "$pc_py_exec_prefix" | sed 's|.|.|g'`
+ pc_cv_python_exec_dir=`echo "$pc_cv_python_exec_dir" | sed "s,^$pc__strip_prefix/,,"`
+ ;;
+ *)
+ case $pc_py_exec_prefix in
+ /usr|/System*) ;;
+ *)
+ pc_cv_python_exec_dir=lib/python$PYTHON_VERSION/site-packages
+ ;;
+ esac
+ ;;
+ esac
+ ])
+AC_SUBST([pyexecdir], [\${exec_prefix}/$pc_cv_python_pyexecdir])]) #PY_PYTHON_CHECK_EXEC_LIB_DIR
+
+
+# PC_PYTHON_EXEC_PACKAGE_DIR
+# --------------------------
+# $PACKAGE directory under PYTHON_SITE_DIR
+AC_DEFUN([PC_PYTHON_EXEC_PACKAGE_DIR],
+[AC_REQUIRE([PC_PYTHON_CHECK_EXEC_DIR])[]dnl
+AC_SUBST([pkgpyexecdir], [\${pyexecdir}/$PACKAGE_NAME])])
+
+
+## -------------------------------------------- ##
+## 4. Looking for specific libs & functionality ##
+## -------------------------------------------- ##
+
+
+# PC_PYTHON_CHECK_MODULE(LIBRARY, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# ----------------------------------------------------------------------
+# Macro for checking if a Python library is installed
+AC_DEFUN([PC_PYTHON_CHECK_MODULE],
+[AC_REQUIRE([PC_PROG_PYTHON])[]dnl
+m4_define([pc_python_safe_mod], m4_bpatsubsts($1, [\.], [_]))
+AC_CACHE_CHECK([for Python '$1' library],
+ [[pc_cv_python_module_]pc_python_safe_mod],
+ [AC_LANG_PUSH(Python)[]dnl
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([dnl
+import sys
+try:
+ import $1
+except:
+ sys.exit(1)
+else:
+ sys.exit(0)
+], [])],
+ [[pc_cv_python_module_]pc_python_safe_mod="yes"],
+ [[pc_cv_python_module_]pc_python_safe_mod="no"])
+ AC_LANG_POP(Python)[]dnl
+ ])
+AS_IF([test "$[pc_cv_python_module_]pc_python_safe_mod" = "no"], [$3], [$2])
+])# PC_PYTHON_CHECK_MODULE
+
+
+# PC_PYTHON_CHECK_FUNC([LIBRARY], FUNCTION, ARGS, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
+# ---------------------------------------------------------------------------------------
+# Check to see if a given function call, optionally from a module, can
+# be successfully called
+AC_DEFUN([PC_PYTHON_CHECK_FUNC],
+[AC_REQUIRE([PC_PROG_PYTHON])[]dnl
+m4_define([pc_python_safe_mod], m4_bpatsubsts($1, [\.], [_]))
+AC_CACHE_CHECK([for Python m4_ifnblank($1, '$1.$2()', '$2()') function],
+ [[pc_cv_python_func_]pc_python_safe_mod[_$2]],
+ [AC_LANG_PUSH(Python)[]dnl
+ AC_RUN_IFELSE(
+ [AC_LANG_PROGRAM([dnl
+import sys
+m4_ifnblank([$1], [dnl
+try:
+ import $1
+except:
+ sys.exit(1)
+], [])],
+[
+m4_ifnblank([$1], [
+ try:
+ $1.$2($3)], [
+ try:
+ $2($3)])
+ except:
+ sys.exit(1)
+ else:
+ sys.exit(0)
+])],
+ [[pc_cv_python_func_]pc_python_safe_mod[_$2]="yes"],
+ [[pc_cv_python_func_]pc_python_safe_mod[_$2]="no"])
+ AC_LANG_POP(Python)[]dnl
+ ])
+AS_IF([test "$[pc_cv_python_func_]pc_python_safe_mod[_$2]" = "no"], [$5], [$4])
+])# PC_PYTHON_CHECK_FUNC