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To do so, use the procedure documented by the package, typically `autoreconf'.])])
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# pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
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# serial 1 (pkg-config-0.24)
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# Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
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AC_DEFUN([PKG_PROG_PKG_CONFIG],
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[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
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m4_pattern_allow([^PKG_CONFIG(_PATH)?$])
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AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])dnl
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AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
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AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
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AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
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if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
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AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
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# Check to see whether a particular set of modules exists. Similar
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# to PKG_CHECK_MODULES(), but does not set variables or print errors.
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# Similar to PKG_CHECK_MODULES, make sure that the first instance of
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# this or PKG_CHECK_MODULES is called, or make sure to call
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# PKG_CHECK_EXISTS manually
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# Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
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# only at the first occurence in configure.ac, so if the first place
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# it's called might be skipped (such as if it is within an "if", you
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# have to call PKG_CHECK_EXISTS manually
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# --------------------------------------------------------------
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AC_DEFUN([PKG_CHECK_EXISTS],
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[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
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if test -n "$PKG_CONFIG" && \
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AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
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m4_ifval([$2], [$2], [:])
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m4_ifvaln([$3], [else
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# _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
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# ---------------------------------------------
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m4_define([_PKG_CONFIG],
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[if test -n "$PKG_CONFIG"; then
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if test -n "$$1"; then
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PKG_CHECK_EXISTS([$3],
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[pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
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[if test -n "$$1"; then
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elif test -n "$PKG_CONFIG"; then
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PKG_CHECK_EXISTS([$3],
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[pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`],
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See the pkg-config man page for more details.])
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if test $pkg_failed = yes; then
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_PKG_SHORT_ERRORS_SUPPORTED
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if test $_pkg_short_errors_supported = yes; then
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$1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --errors-to-stdout --print-errors "$2"`
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$1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors "$2" 2>&1`
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$1[]_PKG_ERRORS=`$PKG_CONFIG --errors-to-stdout --print-errors "$2"`
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$1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors "$2" 2>&1`
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# Put the nasty error message in config.log where it belongs
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echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
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ifelse([$4], , [AC_MSG_ERROR(dnl
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m4_default([$4], [AC_MSG_ERROR(
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[Package requirements ($2) were not met:
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Consider adjusting the PKG_CONFIG_PATH environment variable if you
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installed software in a non-standard prefix.
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elif test $pkg_failed = untried; then
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ifelse([$4], , [AC_MSG_FAILURE(dnl
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m4_default([$4], [AC_MSG_FAILURE(
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[The pkg-config script could not be found or is too old. Make sure it
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is in your PATH or set the PKG_CONFIG environment variable to the full
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path to pkg-config.
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To get pkg-config, see <http://pkg-config.freedesktop.org/>.])],
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To get pkg-config, see <http://pkg-config.freedesktop.org/>.])dnl
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$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
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$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
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AC_MSG_RESULT([yes])
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ifelse([$3], , :, [$3])
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])# PKG_CHECK_MODULES
added
removed
aclocal.m4
