use autoconf macro to check for pkg-config (closes #15506)
diff --git a/configure b/configure
index 139d391..21bab5b 100755
--- a/configure
+++ b/configure
@@ -650,6 +650,8 @@
TCLTK_LIBS
TCLTK_INCLUDES
LIBFFI_INCLUDEDIR
+PKG_CONFIG_LIBDIR
+PKG_CONFIG_PATH
PKG_CONFIG
SHLIBS
CFLAGSFORSHARED
@@ -828,7 +830,10 @@
LDFLAGS
LIBS
CPPFLAGS
-CPP'
+CPP
+PKG_CONFIG
+PKG_CONFIG_PATH
+PKG_CONFIG_LIBDIR'
# Initialize some variables set by options.
@@ -1514,6 +1519,11 @@
CPPFLAGS (Objective) C/C++ preprocessor flags, e.g. -I<include dir> if
you have headers in a nonstandard directory <include dir>
CPP C preprocessor
+ PKG_CONFIG path to pkg-config utility
+ PKG_CONFIG_PATH
+ directories to add to pkg-config's search path
+ PKG_CONFIG_LIBDIR
+ path overriding pkg-config's built-in search path
Use these variables to override the choices made by `configure' or to help
it to find libraries and programs with nonstandard names/locations.
@@ -9218,7 +9228,15 @@
fi
-if test -n "$ac_tool_prefix"; then
+
+
+
+
+
+
+
+if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
+ if test -n "$ac_tool_prefix"; then
# Extract the first word of "${ac_tool_prefix}pkg-config", so it can be a program name with args.
set dummy ${ac_tool_prefix}pkg-config; ac_word=$2
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
@@ -9316,6 +9334,20 @@
PKG_CONFIG="$ac_cv_path_PKG_CONFIG"
fi
+fi
+if test -n "$PKG_CONFIG"; then
+ _pkg_min_version=0.9.0
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking pkg-config is at least version $_pkg_min_version" >&5
+$as_echo_n "checking pkg-config is at least version $_pkg_min_version... " >&6; }
+ if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ PKG_CONFIG=""
+ fi
+fi
# Check for use of the system expat library
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for --with-system-expat" >&5