~drizzle-trunk/drizzle/development

1099.1.1 by Monty Taylor
pandora-build v0.23
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])dnl
30
if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
31
	AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
32
fi
33
if test -n "$PKG_CONFIG"; then
34
	_pkg_min_version=m4_default([$1], [0.9.0])
35
	AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
36
	if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
37
		AC_MSG_RESULT([yes])
38
	else
39
		AC_MSG_RESULT([no])
40
		PKG_CONFIG=""
41
	fi
42
		
43
fi[]dnl
44
])# PKG_PROG_PKG_CONFIG
45
46
# PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
47
#
48
# Check to see whether a particular set of modules exists.  Similar
49
# to PKG_CHECK_MODULES(), but does not set variables or print errors.
50
#
51
#
52
# Similar to PKG_CHECK_MODULES, make sure that the first instance of
53
# this or PKG_CHECK_MODULES is called, or make sure to call
54
# PKG_CHECK_EXISTS manually
55
# --------------------------------------------------------------
56
AC_DEFUN([PKG_CHECK_EXISTS],
57
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
58
if test -n "$PKG_CONFIG" && \
59
    AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
60
  m4_ifval([$2], [$2], [:])
61
m4_ifvaln([$3], [else
62
  $3])dnl
63
fi])
64
65
66
# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
67
# ---------------------------------------------
68
m4_define([_PKG_CONFIG],
69
[if test -n "$PKG_CONFIG"; then
70
    if test -n "$$1"; then
71
        pkg_cv_[]$1="$$1"
72
    else
73
        PKG_CHECK_EXISTS([$3],
74
                         [pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
75
			 [pkg_failed=yes])
76
    fi
77
else
78
	pkg_failed=untried
79
fi[]dnl
80
])# _PKG_CONFIG
81
82
# _PKG_SHORT_ERRORS_SUPPORTED
83
# -----------------------------
84
AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
85
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
86
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
87
        _pkg_short_errors_supported=yes
88
else
89
        _pkg_short_errors_supported=no
90
fi[]dnl
91
])# _PKG_SHORT_ERRORS_SUPPORTED
92
93
94
# PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
95
# [ACTION-IF-NOT-FOUND])
96
#
97
#
98
# Note that if there is a possibility the first call to
99
# PKG_CHECK_MODULES might not happen, you should be sure to include an
100
# explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
101
#
102
#
103
# --------------------------------------------------------------
104
AC_DEFUN([PKG_CHECK_MODULES],
105
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
106
AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
107
AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
108
109
pkg_failed=no
110
AC_MSG_CHECKING([for $1])
111
112
_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
113
_PKG_CONFIG([$1][_LIBS], [libs], [$2])
114
115
m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
116
and $1[]_LIBS to avoid the need to call pkg-config.
117
See the pkg-config man page for more details.])
118
119
if test $pkg_failed = yes; then
120
        _PKG_SHORT_ERRORS_SUPPORTED
121
        if test $_pkg_short_errors_supported = yes; then
122
	        $1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
123
        else 
124
	        $1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
125
        fi
126
	# Put the nasty error message in config.log where it belongs
127
	echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
128
129
	ifelse([$4], , [AC_MSG_ERROR(dnl
130
[Package requirements ($2) were not met:
131
132
$$1_PKG_ERRORS
133
134
Consider adjusting the PKG_CONFIG_PATH environment variable if you
135
installed software in a non-standard prefix.
136
137
_PKG_TEXT
138
])],
139
		[AC_MSG_RESULT([no])
140
                $4])
141
elif test $pkg_failed = untried; then
142
	ifelse([$4], , [AC_MSG_FAILURE(dnl
143
[The pkg-config script could not be found or is too old.  Make sure it
144
is in your PATH or set the PKG_CONFIG environment variable to the full
145
path to pkg-config.
146
147
_PKG_TEXT
148
149
To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],
150
		[$4])
151
else
152
	$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
153
	$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
154
        AC_MSG_RESULT([yes])
155
	ifelse([$3], , :, [$3])
156
fi[]dnl
157
])# PKG_CHECK_MODULES