Obvious fix
Index: BUILDING =================================================================== RCS file: /usr/cvsroot/src/BUILDING,v retrieving revision 1.134 diff -u -p -r1.134 BUILDING --- BUILDING 29 Jul 2018 20:53:41 -0000 1.134 +++ BUILDING 8 May 2019 13:04:48 -0000 @@ -206,7 +206,7 @@ CONFIGURATION Directory containing sources of externally added programs and libraries. If specified, must be an absolute path. - Default: NETBSDRCDIR/../extsrc, if that exists; otherwise + Default: NETBSDSRCDIR/../extsrc, if that exists; otherwise /usr/extsrc. MAKECONF The name of the make(1) configuration file. Only settable in @@ -461,7 +461,7 @@ CONFIGURATION must be an absolute path. The main modular Xorg source is found in X11SRCDIR/external/mit. - Default: NETBSDRCDIR/../xsrc, if that exists; otherwise + Default: NETBSDSRCDIR/../xsrc, if that exists; otherwise /usr/xsrc. "make" variables for full builds Index: doc/BUILDING.mdoc =================================================================== RCS file: /usr/cvsroot/src/doc/BUILDING.mdoc,v retrieving revision 1.125 diff -u -p -r1.125 BUILDING.mdoc --- doc/BUILDING.mdoc 29 Jul 2018 20:53:29 -0000 1.125 +++ doc/BUILDING.mdoc 8 May 2019 13:05:14 -0000 @@ -430,7 +430,7 @@ Directory containing sources of external and libraries. If specified, must be an absolute path. .DFLT -.Sy NETBSDRCDIR Ns Pa /../extsrc , +.Sy NETBSDSRCDIR Ns Pa /../extsrc , if that exists; otherwise .Pa /usr/extsrc . . @@ -814,7 +814,7 @@ If specified, must be an absolute path. The main modular Xorg source is found in .Sy X11SRCDIR Ns Pa /external/mit . .DFLT -.Sy NETBSDRCDIR Ns Pa /../xsrc , +.Sy NETBSDSRCDIR Ns Pa /../xsrc , if that exists; otherwise .Pa /usr/xsrc . .