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#
pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
#
#
Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
#
#
This program is free software; you can redistribute it and/or modify
#
it under the terms of the GNU General Public License as published by
#
the Free Software Foundation; either version 2 of the License, or
#
(at your option) any later version.
#
#
This program is distributed in the hope that it will be useful, but
#
WITHOUT ANY WARRANTY; without even the implied warranty of
#
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
#
General Public License for more details.
#
#
You should have received a copy of the GNU General Public License
#
along with this program; if not, write to the Free Software
#
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
#
As a special exception to the GNU General Public License, if you
#
distribute this file as part of a program that contains a
#
configuration script generated by Autoconf, you may include it under
#
the same distribution terms that you use for the rest of that program.
#
PKG_PROG_PKG_CONFIG([MIN-VERSION])
#
----------------------------------
AC_DEFUN
(
[
PKG_PROG_PKG_CONFIG
]
,
[
m4_pattern_forbid
(
[
^_?PKG_
[
A-Z_
]
+$
]
)
m4_pattern_allow
(
[
^PKG_CONFIG(_PATH)?$
]
)
AC_ARG_VAR
(
[
PKG_CONFIG
]
,
[
path to pkg-config utility
]
)
dnl
if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
AC_PATH_TOOL
(
[
PKG_CONFIG
]
,
[
pkg-config
]
)
fi
if test -n "$PKG_CONFIG"; then
_pkg_min_version=
m4_default
(
[
$1
]
,
[
0.9.0
]
)
AC_MSG_CHECKING
(
[
pkg-config is at least version $_pkg_min_version
]
)
if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
AC_MSG_RESULT
(
[
yes
]
)
else
AC_MSG_RESULT
(
[
no
]
)
PKG_CONFIG=""
fi
fi
[
]
dnl
]
)
#
PKG_PROG_PKG_CONFIG
#
PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
#
#
Check to see whether a particular set of modules exists. Similar
#
to PKG_CHECK_MODULES(), but does not set variables or print errors.
#
#
#
Similar to PKG_CHECK_MODULES, make sure that the first instance of
#
this or PKG_CHECK_MODULES is called, or make sure to call
#
PKG_CHECK_EXISTS manually
#
--------------------------------------------------------------
AC_DEFUN
(
[
PKG_CHECK_EXISTS
]
,
[
AC_REQUIRE
(
[
PKG_PROG_PKG_CONFIG
]
)
dnl
if test -n "$PKG_CONFIG" && \
AC_RUN_LOG(
[
$PKG_CONFIG --exists --print-errors "
$1
"
]
); then
m4_ifval
(
[
$2
]
,
[
$2
]
,
[
:
]
)
m4_ifvaln
(
[
$3
]
,
[
else
$3
]
)
dnl
fi
]
)
#
_PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
#
---------------------------------------------
m4_define
(
[
_PKG_CONFIG
]
,
[
if test -n "$PKG_CONFIG"; then
if test -n "$
$1
"; then
pkg_cv_
[
]
$1
="$
$1
"
else
PKG_CHECK_EXISTS(
[
$3
]
,
[
pkg_cv_
[
]
$1
=`$PKG_CONFIG --
[
]
$2
"
$3
" 2>/dev/null`
]
,
[
pkg_failed=yes
]
)
fi
else
pkg_failed=untried
fi
[
]
dnl
]
)
#
_PKG_CONFIG
#
_PKG_SHORT_ERRORS_SUPPORTED
#
-----------------------------
AC_DEFUN
(
[
_PKG_SHORT_ERRORS_SUPPORTED
]
,
[
AC_REQUIRE
(
[
PKG_PROG_PKG_CONFIG
]
)
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
_pkg_short_errors_supported=yes
else
_pkg_short_errors_supported=no
fi
[
]
dnl
]
)
#
_PKG_SHORT_ERRORS_SUPPORTED
#
PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
#
[ACTION-IF-NOT-FOUND])
#
#
#
Note that if there is a possibility the first call to
#
PKG_CHECK_MODULES might not happen, you should be sure to include an
#
explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
#
#
#
--------------------------------------------------------------
AC_DEFUN
(
[
PKG_CHECK_MODULES
]
,
[
AC_REQUIRE
(
[
PKG_PROG_PKG_CONFIG
]
)
dnl
AC_ARG_VAR
(
[
$1
]
[
_CFLAGS
]
,
[
C compiler flags for
$1
, overriding pkg-config
]
)
dnl
AC_ARG_VAR
(
[
$1
]
[
_LIBS
]
,
[
linker flags for
$1
, overriding pkg-config
]
)
dnl
pkg_failed=no
AC_MSG_CHECKING
(
[
for
$1
]
)
_PKG_CONFIG(
[
$1
]
[
_CFLAGS
]
,
[
cflags
]
,
[
$2
]
)
_PKG_CONFIG(
[
$1
]
[
_LIBS
]
,
[
libs
]
,
[
$2
]
)
m4_define
(
[
_PKG_TEXT
]
,
[
Alternatively, you may set the environment variables
$1
[
]
_CFLAGS
and
$1
[
]
_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
]
)
if test $pkg_failed = yes; then
_PKG_SHORT_ERRORS_SUPPORTED
if test $_pkg_short_errors_supported = yes; then
$1
[
]
_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "
$2
"`
else
$1
[
]
_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "
$2
"`
fi
# Put the nasty error message in config.log where it belongs
echo "$
$1
[
]
_PKG_ERRORS" >&
AS_MESSAGE_LOG_FD
ifelse
(
[
$4
]
, ,
[
AC_MSG_ERROR
(
dnl
[
Package requirements (
$2
) were not met:
$
$1
_PKG_ERRORS
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
_PKG_TEXT
]
)
]
,
[
AC_MSG_RESULT
(
[
no
]
)
$4
]
)
elif test $pkg_failed = untried; then
ifelse
(
[
$4
]
, ,
[
AC_MSG_FAILURE
(
dnl
[
The pkg-config script could not be found or is too old. Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.
_PKG_TEXT
To get pkg-config, see <http://www.freedesktop.org/software/pkgconfig>.
]
)
]
,
[
AC_MSG_RESULT
(
[
no
]
)
$4
]
)
else
$1
[
]
_CFLAGS=$pkg_cv_
[
]
$1
[
]
_CFLAGS
$1
[
]
_LIBS=$pkg_cv_
[
]
$1
[
]
_LIBS
AC_MSG_RESULT
(
[
yes
]
)
ifelse
(
[
$3
]
, ,
:
,
[
$3
]
)
fi
[
]
dnl
]
)
#
PKG_CHECK_MODULES
#
PKG_CHECK_MODULES_NOFAIL(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
#
[ACTION-IF-NOT-FOUND])
#
#
#
This is the same as PKG_CHECK_MODULES, but it will not stop with an
#
error or a failure if it does not find the packages, but it will still
#
output the same detailed warning about the problem. To check if
#
an error occured, look at $pkg_failed, which will be 'yes' or 'untried'
#
in that case.
#
#
Note that if there is a possibility the first call to
#
PKG_CHECK_MODULES_NOFAIL might not happen, you should be sure to
#
include an explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
#
#
#
--------------------------------------------------------------
AC_DEFUN
(
[
PKG_CHECK_MODULES_NOFAIL
]
,
[
AC_REQUIRE
(
[
PKG_PROG_PKG_CONFIG
]
)
dnl
AC_ARG_VAR
(
[
$1
]
[
_CFLAGS
]
,
[
C compiler flags for
$1
, overriding pkg-config
]
)
dnl
AC_ARG_VAR
(
[
$1
]
[
_LIBS
]
,
[
linker flags for
$1
, overriding pkg-config
]
)
dnl
pkg_failed=no
AC_MSG_CHECKING
(
[
for
$1
]
)
_PKG_CONFIG(
[
$1
]
[
_CFLAGS
]
,
[
cflags
]
,
[
$2
]
)
_PKG_CONFIG(
[
$1
]
[
_LIBS
]
,
[
libs
]
,
[
$2
]
)
m4_define
(
[
_PKG_TEXT
]
,
[
Alternatively, you may set the environment variables
$1
[
]
_CFLAGS
and
$1
[
]
_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
]
)
if test $pkg_failed = yes; then
_PKG_SHORT_ERRORS_SUPPORTED
if test $_pkg_short_errors_supported = yes; then
$1
[
]
_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "
$2
"`
else
$1
[
]
_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "
$2
"`
fi
# Put the nasty error message in config.log where it belongs
echo "$
$1
[
]
_PKG_ERRORS" >&
AS_MESSAGE_LOG_FD
ifelse
(
[
$4
]
, ,
[
AC_MSG_WARN
(
dnl
[
Package requirements (
$2
) were not met:
$
$1
_PKG_ERRORS
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
_PKG_TEXT
]
)
]
,
[
AC_MSG_RESULT
(
[
no
]
)
$4
]
)
elif test $pkg_failed = untried; then
ifelse
(
[
$4
]
, ,
[
AC_MSG_WARN
(
dnl
[
The pkg-config script could not be found or is too old. Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.
_PKG_TEXT
To get pkg-config, see <http://www.freedesktop.org/software/pkgconfig>.
]
)
]
,
[
AC_MSG_RESULT
(
[
no
]
)
$4
]
)
else
$1
[
]
_CFLAGS=$pkg_cv_
[
]
$1
[
]
_CFLAGS
$1
[
]
_LIBS=$pkg_cv_
[
]
$1
[
]
_LIBS
AC_MSG_RESULT
(
[
yes
]
)
ifelse
(
[
$3
]
, ,
:
,
[
$3
]
)
fi
[
]
dnl
]
)
#
PKG_CHECK_MODULES_NOFAIL
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