1dnl #
2dnl # ZFS_AC_PYTHON_MODULE(module_name, [action-if-true], [action-if-false])
3dnl #
4dnl # Checks for Python module. Freely inspired by AX_PYTHON_MODULE
5dnl # https://www.gnu.org/software/autoconf-archive/ax_python_module.html
6dnl # Required by ZFS_AC_CONFIG_ALWAYS_PYZFS.
7dnl #
8AC_DEFUN([ZFS_AC_PYTHON_MODULE], [
9	PYTHON_NAME=$(basename $PYTHON)
10	AC_MSG_CHECKING([for $PYTHON_NAME module: $1])
11	AS_IF([$PYTHON -c "import $1" 2>/dev/null], [
12		AC_MSG_RESULT(yes)
13		m4_ifvaln([$2], [$2])
14	], [
15		AC_MSG_RESULT(no)
16		m4_ifvaln([$3], [$3])
17	])
18])
19
20dnl #
21dnl # Determines if pyzfs can be built, requires Python 2.7 or later.
22dnl #
23AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYZFS], [
24	AC_ARG_ENABLE([pyzfs],
25		AC_HELP_STRING([--enable-pyzfs],
26		[install libzfs_core python bindings @<:@default=check@:>@]),
27		[enable_pyzfs=$enableval],
28		[enable_pyzfs=check])
29
30	dnl #
31	dnl # Packages for pyzfs specifically enabled/disabled.
32	dnl #
33	AS_IF([test "x$enable_pyzfs" != xcheck], [
34		AS_IF([test "x$enable_pyzfs" = xyes], [
35			DEFINE_PYZFS='--with pyzfs'
36		], [
37			DEFINE_PYZFS='--without pyzfs'
38		])
39	], [
40		AS_IF([test "$PYTHON" != :], [
41			DEFINE_PYZFS=''
42		], [
43			enable_pyzfs=no
44			DEFINE_PYZFS='--without pyzfs'
45		])
46	])
47	AC_SUBST(DEFINE_PYZFS)
48
49	dnl #
50	dnl # Require python-devel libraries
51	dnl #
52	AS_IF([test "x$enable_pyzfs" = xcheck  -o "x$enable_pyzfs" = xyes], [
53		AS_CASE([$PYTHON_VERSION],
54			[3.*], [PYTHON_REQUIRED_VERSION=">= '3.4.0'"],
55			[2.*], [PYTHON_REQUIRED_VERSION=">= '2.7.0'"],
56			[AC_MSG_ERROR("Python $PYTHON_VERSION unknown")]
57		)
58
59		AX_PYTHON_DEVEL([$PYTHON_REQUIRED_VERSION], [
60			AS_IF([test "x$enable_pyzfs" = xyes], [
61				AC_MSG_ERROR("Python $PYTHON_REQUIRED_VERSION development library is not installed")
62			], [test "x$enable_pyzfs" != xno], [
63				enable_pyzfs=no
64			])
65		])
66	])
67
68	dnl #
69	dnl # Python "setuptools" module is required to build and install pyzfs
70	dnl #
71	AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
72		ZFS_AC_PYTHON_MODULE([setuptools], [], [
73			AS_IF([test "x$enable_pyzfs" = xyes], [
74				AC_MSG_ERROR("Python $PYTHON_VERSION setuptools is not installed")
75			], [test "x$enable_pyzfs" != xno], [
76				enable_pyzfs=no
77			])
78		])
79	])
80
81	dnl #
82	dnl # Python "cffi" module is required to run pyzfs
83	dnl #
84	AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
85		ZFS_AC_PYTHON_MODULE([cffi], [], [
86			AS_IF([test "x$enable_pyzfs" = xyes], [
87				AC_MSG_ERROR("Python $PYTHON_VERSION cffi is not installed")
88			], [test "x$enable_pyzfs" != xno], [
89				enable_pyzfs=no
90			])
91		])
92	])
93
94	dnl #
95	dnl # Set enable_pyzfs to 'yes' if every check passed
96	dnl #
97	AS_IF([test "x$enable_pyzfs" = xcheck], [enable_pyzfs=yes])
98
99	AM_CONDITIONAL([PYZFS_ENABLED], [test "x$enable_pyzfs" = xyes])
100	AC_SUBST([PYZFS_ENABLED], [$enable_pyzfs])
101	AC_SUBST(pythonsitedir, [$PYTHON_SITE_PKG])
102
103	AC_MSG_CHECKING([whether to enable pyzfs: ])
104	AC_MSG_RESULT($enable_pyzfs)
105])
106