Add znc-config --cxx and use it in znc-buildmod

Plus this makes sure that znc-buildmod tries to use the znc-config we installed
first, then others from $PATH.


git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1255 726aef4b-f618-498e-8847-2d620e286838

znc-buildmod.in

@@ -9,17 +9,13 @@ OK="[ ok ]"
 prefix="@prefix@"
 exec_prefix="@exec_prefix@"
 bindir="@bindir@"
-PATH="$PATH:$bindir"
+PATH="$bindir:$PATH"
 
 # Check if we got everything we need
 
 SED=sed
 ZNC_CONFIG=znc-config
 
-if test "x$CXX" = "x" ; then
-	CXX=g++
-fi
-
 check_binary()
 {
 	which $1 > /dev/null 2>&1
@@ -31,6 +27,14 @@ check_binary()
 
 check_binary ${SED}
 check_binary ${ZNC_CONFIG} "Please (re)install ZNC."
+
+if test "x$CXX" = "x" ; then
+	CXX=`${ZNC_CONFIG} --cxx`
+fi
+if test "x$CXX" = "x" ; then
+	CXX=g++
+fi
+
 check_binary ${CXX} "What happened to your compiler?"
 
 if test -z "$1"; then

znc-config.in

@@ -6,6 +6,7 @@ datarootdir="@datarootdir@"
 bindir="@bindir@"
 datadir="@datadir@"
 
+CXX="@CXX@"
 CXXFLAGS="@CPPFLAGS@ @MODFLAGS@ -I@prefix@/include/znc"
 # LIBS="@LIBS@"
 # No libs needed, ZNC links against $LIBS and thus modules don't need to.
@@ -15,7 +16,8 @@ DATADIR="@DATADIR@"
 VERSION="@VERSION@"
 
 if test -z "$1"; then
-	echo "USAGE: $0 <--cflags|--include|--libs|--moddir|--datadir|--version|--prefix>"
+	echo "USAGE: $0 <flag>"
+	echo "	--cxx        [$CXX]"
 	echo "	--cflags     [$CXXFLAGS]"
 	echo "	--libs       [$LIBS]"
 	echo "	--moddir     [$MODDIR]"
@@ -26,6 +28,8 @@ if test -z "$1"; then
 fi
 
 case $1 in
+	--cxx)
+		echo $CXX;;
 	--cflags)
 		echo $CXXFLAGS;;
 	--include)