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 "$PYTHON" != :], [
41			DEFINE_PYZFS=''
42		], [
43			enable_pyzfs=no
44			DEFINE_PYZFS='--without pyzfs'
45		])
46	])
47	AC_SUBST(DEFINE_PYZFS)
48
49	dnl #
50	dnl # Autodetection disables pyzfs if kernel or srpm config
51	dnl #
52	AS_IF([test "x$enable_pyzfs" = xcheck], [
53		AS_IF([test "x$ZFS_CONFIG" = xkernel -o "x$ZFS_CONFIG" = xsrpm ], [
54				enable_pyzfs=no
55				AC_MSG_NOTICE([Disabling pyzfs for kernel/srpm config])
56		])
57	])
58
59	dnl #
60	dnl # Python "packaging" (or, failing that, "distlib") module is required to build and install pyzfs
61	dnl #
62	AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
63		ZFS_AC_PYTHON_MODULE([packaging], [], [
64			ZFS_AC_PYTHON_MODULE([distlib], [], [
65				AS_IF([test "x$enable_pyzfs" = xyes], [
66					AC_MSG_ERROR("Python $PYTHON_VERSION packaging and distlib modules are not installed")
67				], [test "x$enable_pyzfs" != xno], [
68					enable_pyzfs=no
69				])
70			])
71		])
72	])
73
74	dnl #
75	dnl # Require python3-devel libraries
76	dnl #
77	AS_IF([test "x$enable_pyzfs" = xcheck  -o "x$enable_pyzfs" = xyes], [
78		AS_CASE([$PYTHON_VERSION],
79			[3.*], [PYTHON_REQUIRED_VERSION=">= '3.6.0'"],
80			[AC_MSG_ERROR("Python $PYTHON_VERSION unknown")]
81		)
82
83		AS_IF([test "x$enable_pyzfs" = xyes], [
84			AX_PYTHON_DEVEL([$PYTHON_REQUIRED_VERSION])
85		], [
86			AX_PYTHON_DEVEL([$PYTHON_REQUIRED_VERSION], [true])
87			AS_IF([test "x$ax_python_devel_found" = xno], [
88				enable_pyzfs=no
89			])
90		])
91	])
92
93	dnl #
94	dnl # Python "setuptools" module is required to build and install pyzfs
95	dnl #
96	AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
97		ZFS_AC_PYTHON_MODULE([setuptools], [], [
98			AS_IF([test "x$enable_pyzfs" = xyes], [
99				AC_MSG_ERROR("Python $PYTHON_VERSION setuptools is not installed")
100			], [test "x$enable_pyzfs" != xno], [
101				enable_pyzfs=no
102			])
103		])
104	])
105
106	dnl #
107	dnl # Python "cffi" module is required to run pyzfs
108	dnl #
109	AS_IF([test "x$enable_pyzfs" = xcheck -o "x$enable_pyzfs" = xyes], [
110		ZFS_AC_PYTHON_MODULE([cffi], [], [
111			AS_IF([test "x$enable_pyzfs" = xyes], [
112				AC_MSG_ERROR("Python $PYTHON_VERSION cffi is not installed")
113			], [test "x$enable_pyzfs" != xno], [
114				enable_pyzfs=no
115			])
116		])
117	])
118
119	dnl #
120	dnl # Set enable_pyzfs to 'yes' if every check passed
121	dnl #
122	AS_IF([test "x$enable_pyzfs" = xcheck], [enable_pyzfs=yes])
123
124	AM_CONDITIONAL([PYZFS_ENABLED], [test "x$enable_pyzfs" = xyes])
125	AC_SUBST([PYZFS_ENABLED], [$enable_pyzfs])
126	AC_SUBST(pythonsitedir, [$PYTHON_SITE_PKG])
127
128	AC_MSG_CHECKING([whether to enable pyzfs: ])
129	AC_MSG_RESULT($enable_pyzfs)
130])
131