commit - 3684df6e4885701a68d28b588e8a028099662031
commit + 8c24e687b3678061640054aeea9c92d0a66555df
blob - b53f8feb2ed503cb4206df74e40074424d2484a7
blob + 7727f4a4a0de2266ef3d6d9ac981da8cd545d018
--- install.txt
+++ install.txt
@@ -51,17 +51,17 @@
           On these systems, plan9port must fall back on the threading
           code intended for Linux 2.4.  To accomplish this, INSTALL
           checks whether the running system uses NPTL and sets
-
-     Page 1                       Plan 9            (printed 12/30/05)
-
-     INSTALL(1)                                             INSTALL(1)
-
           SYSVERSION in /usr/local/plan9/config accordingly.  The file
           /usr/local/plan9/LOCAL.config is appended to config after
           this auto-detection and can be used to override the choices.
           If LOCAL.config contains a line WSYSTYPE=nowsys then the
           system is built without using X11.
 
+          On most Linux systems, the X11 header packages need to be
+          installed to build using X11.  On Debian. the required pack-
+          ages are libx11-dev, libxext-dev, and libxt-dev.  On Ubuntu,
+          it suffices to install xorg-dev.
+
           INSTALL can safely be repeated to rebuild the system from
           scratch.
 
@@ -96,5 +96,3 @@
      SEE ALSO
           intro(1), cvs(1)
 
-     Page 2                       Plan 9            (printed 12/30/05)
-
blob - f37f85403af5cdccdcf15325fd55057bb51f5cc3
blob + 1e60115a521e60644d6818b7ab92140349908a16
--- man/man1/install.1
+++ man/man1/install.1
@@ -91,6 +91,11 @@ contains a line
 .B WSYSTYPE=nowsys
 then the system is built without using X11.
 .PP
+On most Linux systems, the X11 header packages need to be installed
+to build using X11.  On Debian. the required packages are
+libx11-dev, libxext-dev, and libxt-dev.
+On Ubuntu, it suffices to install xorg-dev.
+.PP
 .I INSTALL
 can safely be repeated to rebuild the system from scratch.
 .PP