configure

@@ -4024,7 +4024,7 @@ then :
 printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h
 
 fi
-if $PKGCONFIG --exists zlib
+if $PKCONFIG --exists zlib
 then :
 
     { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5

configure.ac

@@ -103,7 +103,7 @@ AC_SUBST([PKGCONFIG_REQUIRES])
 
 dnl ZLIB
 AC_MSG_CHECKING([for zlib via pkg-config])
-AS_IF([$PKGCONFIG --exists zlib], [
+AS_IF([$PKCONFIG --exists zlib], [
     AC_MSG_RESULT([yes])
     LIBS="$($PKGCONFIG --libs zlib) $LIBS"
     CPPFLAGS="$($PKGCONFIG --cflags zlib) $CPPFLAGS"