Annotation of embedaddon/smartmontools/m4/pkg.m4, revision 1.1.1.1
1.1 misho 1: # pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
2: #
3: # Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
4: #
5: # This program is free software; you can redistribute it and/or modify
6: # it under the terms of the GNU General Public License as published by
7: # the Free Software Foundation; either version 2 of the License, or
8: # (at your option) any later version.
9: #
10: # This program is distributed in the hope that it will be useful, but
11: # WITHOUT ANY WARRANTY; without even the implied warranty of
12: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13: # General Public License for more details.
14: #
15: # You should have received a copy of the GNU General Public License
16: # along with this program; if not, write to the Free Software
17: # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
18: #
19: # As a special exception to the GNU General Public License, if you
20: # distribute this file as part of a program that contains a
21: # configuration script generated by Autoconf, you may include it under
22: # the same distribution terms that you use for the rest of that program.
23:
24: # PKG_PROG_PKG_CONFIG([MIN-VERSION])
25: # ----------------------------------
26: AC_DEFUN([PKG_PROG_PKG_CONFIG],
27: [m4_pattern_forbid([^_?PKG_[A-Z_]+$])
28: m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
29: AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
30: AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
31: AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
32:
33: if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
34: AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
35: fi
36: if test -n "$PKG_CONFIG"; then
37: _pkg_min_version=m4_default([$1], [0.9.0])
38: AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
39: if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
40: AC_MSG_RESULT([yes])
41: else
42: AC_MSG_RESULT([no])
43: PKG_CONFIG=""
44: fi
45:
46: fi[]dnl
47: ])# PKG_PROG_PKG_CONFIG
48:
49: # PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
50: #
51: # Check to see whether a particular set of modules exists. Similar
52: # to PKG_CHECK_MODULES(), but does not set variables or print errors.
53: #
54: #
55: # Similar to PKG_CHECK_MODULES, make sure that the first instance of
56: # this or PKG_CHECK_MODULES is called, or make sure to call
57: # PKG_CHECK_EXISTS manually
58: # --------------------------------------------------------------
59: AC_DEFUN([PKG_CHECK_EXISTS],
60: [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
61: if test -n "$PKG_CONFIG" && \
62: AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
63: m4_ifval([$2], [$2], [:])
64: m4_ifvaln([$3], [else
65: $3])dnl
66: fi])
67:
68:
69: # _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
70: # ---------------------------------------------
71: m4_define([_PKG_CONFIG],
72: [if test -n "$$1"; then
73: pkg_cv_[]$1="$$1"
74: elif test -n "$PKG_CONFIG"; then
75: PKG_CHECK_EXISTS([$3],
76: [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
77: [pkg_failed=yes])
78: else
79: pkg_failed=untried
80: fi[]dnl
81: ])# _PKG_CONFIG
82:
83: # _PKG_SHORT_ERRORS_SUPPORTED
84: # -----------------------------
85: AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
86: [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
87: if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
88: _pkg_short_errors_supported=yes
89: else
90: _pkg_short_errors_supported=no
91: fi[]dnl
92: ])# _PKG_SHORT_ERRORS_SUPPORTED
93:
94:
95: # PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
96: # [ACTION-IF-NOT-FOUND])
97: #
98: #
99: # Note that if there is a possibility the first call to
100: # PKG_CHECK_MODULES might not happen, you should be sure to include an
101: # explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
102: #
103: #
104: # --------------------------------------------------------------
105: AC_DEFUN([PKG_CHECK_MODULES],
106: [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
107: AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
108: AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
109:
110: pkg_failed=no
111: AC_MSG_CHECKING([for $1])
112:
113: _PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
114: _PKG_CONFIG([$1][_LIBS], [libs], [$2])
115:
116: m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
117: and $1[]_LIBS to avoid the need to call pkg-config.
118: See the pkg-config man page for more details.])
119:
120: if test $pkg_failed = yes; then
121: _PKG_SHORT_ERRORS_SUPPORTED
122: if test $_pkg_short_errors_supported = yes; then
123: $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
124: else
125: $1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
126: fi
127: # Put the nasty error message in config.log where it belongs
128: echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
129:
130: ifelse([$4], , [AC_MSG_ERROR(dnl
131: [Package requirements ($2) were not met:
132:
133: $$1_PKG_ERRORS
134:
135: Consider adjusting the PKG_CONFIG_PATH environment variable if you
136: installed software in a non-standard prefix.
137:
138: _PKG_TEXT
139: ])],
140: [AC_MSG_RESULT([no])
141: $4])
142: elif test $pkg_failed = untried; then
143: ifelse([$4], , [AC_MSG_FAILURE(dnl
144: [The pkg-config script could not be found or is too old. Make sure it
145: is in your PATH or set the PKG_CONFIG environment variable to the full
146: path to pkg-config.
147:
148: _PKG_TEXT
149:
150: To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],
151: [$4])
152: else
153: $1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
154: $1[]_LIBS=$pkg_cv_[]$1[]_LIBS
155: AC_MSG_RESULT([yes])
156: ifelse([$3], , :, [$3])
157: fi[]dnl
158: ])# PKG_CHECK_MODULES
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