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=${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], [$3])
17	])
18])
19
20dnl #
21dnl # Determines if pyzfs can be built, requires Python 3.6 or later.
22dnl #
23AC_DEFUN([ZFS_AC_CONFIG_ALWAYS_PYZFS], [
24	AC_ARG_ENABLE([pyzfs],
25		AS_HELP_STRING([--enable-pyzfs],
26		[install libzfs_core python bindings @<:@default=check@:>@]),
27		[enable_pyzfs=$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 "$PYTHON" != :], [
41			DEFINE_PYZFS=''
42		], [
43			enable_pyzfs=no
44			DEFINE_PYZFS='--without pyzfs'
45		])
46	])
47	AC_SUBST(DEFINE_PYZFS)
48
49	dnl #
50	dnl # Python "packaging" (or, failing that, "distlib") module is required to build and install pyzfs
51	dnl #
52	AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
53		ZFS_AC_PYTHON_MODULE([packaging], [], [
54			ZFS_AC_PYTHON_MODULE([distlib], [], [
55				AS_IF([test "x$enable_pyzfs" = xyes], [
56					AC_MSG_ERROR("Python $PYTHON_VERSION packaging and distlib modules are not installed")
57				], [test "x$enable_pyzfs" != xno], [
58					enable_pyzfs=no
59				])
60			])
61		])
62	])
63
64	dnl #
65	dnl # Require python3-devel libraries
66	dnl #
67	AS_IF([test "x$enable_pyzfs" = xcheck  -o "x$enable_pyzfs" = xyes], [
68		AS_CASE([$PYTHON_VERSION],
69			[3.*], [PYTHON_REQUIRED_VERSION=">= '3.6.0'"],
70			[AC_MSG_ERROR("Python $PYTHON_VERSION unknown")]
71		)
72
73		AX_PYTHON_DEVEL([$PYTHON_REQUIRED_VERSION], [
74			AS_IF([test "x$enable_pyzfs" = xyes], [
75				AC_MSG_ERROR("Python $PYTHON_REQUIRED_VERSION development library is not installed")
76			], [test "x$enable_pyzfs" != xno], [
77				enable_pyzfs=no
78			])
79		])
80	])
81
82	dnl #
83	dnl # Python "setuptools" module is required to build and install pyzfs
84	dnl #
85	AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
86		ZFS_AC_PYTHON_MODULE([setuptools], [], [
87			AS_IF([test "x$enable_pyzfs" = xyes], [
88				AC_MSG_ERROR("Python $PYTHON_VERSION setuptools is not installed")
89			], [test "x$enable_pyzfs" != xno], [
90				enable_pyzfs=no
91			])
92		])
93	])
94
95	dnl #
96	dnl # Python "cffi" module is required to run pyzfs
97	dnl #
98	AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
99		ZFS_AC_PYTHON_MODULE([cffi], [], [
100			AS_IF([test "x$enable_pyzfs" = xyes], [
101				AC_MSG_ERROR("Python $PYTHON_VERSION cffi is not installed")
102			], [test "x$enable_pyzfs" != xno], [
103				enable_pyzfs=no
104			])
105		])
106	])
107
108	dnl #
109	dnl # Set enable_pyzfs to 'yes' if every check passed
110	dnl #
111	AS_IF([test "x$enable_pyzfs" = xcheck], [enable_pyzfs=yes])
112
113	AM_CONDITIONAL([PYZFS_ENABLED], [test "x$enable_pyzfs" = xyes])
114	AC_SUBST([PYZFS_ENABLED], [$enable_pyzfs])
115	AC_SUBST(pythonsitedir, [$PYTHON_SITE_PKG])
116
117	AC_MSG_CHECKING([whether to enable pyzfs: ])
118	AC_MSG_RESULT($enable_pyzfs)
119])
120