configure: Fix pkg-config warning to not refer to non-existent variables.

We used to have NOTMUCH_CFLAGS and NOTMUCH_LDFLAGS in the Makefile, but
we don't anymore, so don't refer to them.

diff --git a/configure b/configure
index b1ac741d32d6361aaec4643bc21508ff39104aa3..64816e0ffeb72cd1ab03ad4b3f57448d36e281b1 100755 (executable)
--- a/configure
+++ b/configure
@@ -106,8 +106,8 @@ with a command such as:
        sudo apt-get install pkg-config
 
 But if pkg-config is not available for your system, then you will need
-to manually edit the notmuch Makefile to set NOTMUCH_CFLAGS and
-NOTMUCH_LDFLAGS to the correct values without calling pkg-config.
+to manually edit the notmuch Makefile to set the variables such as
+CFLAGS and LDFLAGS to the correct values without calling pkg-config.
 
 EOF
     fi