* configure.in (long_usage): Removed; made short_usage describe

	the options.

	* configure.in: Implement the --prefix option.
	* Makefile.in (prefix): Add support for it here.

diff --git a/configure1.in b/configure1.in
index 7a721bf..c307f45 100755 (executable)
--- a/configure1.in
+++ b/configure1.in
@@ -59,50 +59,20 @@ progname="`echo $0 | sed 's:^\./\./:\./:'`"
 
 #### Usage messages.
 
-short_usage="Type \`${progname} --usage' for more information about options."
-
-long_usage="Usage: ${progname} CONFIGURATION [-OPTION[=VALUE] ...]
+short_usage="Usage: ${progname} CONFIGURATION [-OPTION[=VALUE] ...]
 
 Set compilation and installation parameters for GNU Emacs, and report.
 CONFIGURATION specifies the machine and operating system to build for.
-For example:
-        ${progname} sparc-sun-sunos4.1
-configures Emacs to build on a Sun Sparc machine running SunOS 4.1, and 
-        ${progname} decstation
-configures Emacs to run on a DECstation running Ultrix.  See \`etc/MACHINES'.
-
-The --with-x, --with-x11 and --with-x10 options specify what window
-       system to use; if all are omitted, use X11 if present.  If you
-       don't want X, specify \`--with-x=no'.
-
-The --x-includes=DIR option tells the build process where to search
-       for the X Windows header files.  DIR should have a
-       subdirectory called \`X11' which contains \`X.h', \`Xlib.h', and
-       the rest of the header files; DIR should not contain \`X11'
-       itself.  If this option is omitted, the build process assumes
-       they exist in a directory the compiler checks by default.
-
-The --x-libraries=DIR option tells the build process where to look for
-       the X windows libraries.  If this option is omitted, the build
-       process assumes they are in a directory the compiler checks by
-       default.
-
-The --with-gcc option says that the build process should use GCC to
-       compile Emacs.  If you have GCC but don't want to use it,
-       specify \`--with-gcc=no'.  \`configure' tries to guess whether
-       or not you have GCC by searching your executable path, but if
-       it guesses incorrectly, you may need to use this.
-
-The --run-in-place option sets up default values for the path
-       variables in \`./Makefile' so that Emacs will expect to find
-       its data files (lisp libraries, runnable programs, and the
-       like) in the same locations they occupy while Emacs builds.
-       This means that you don't have to install Emacs in order to
-       run it; it uses its data files as they were unpacked.
-
-The --srcdir=DIR option specifies that the configuration and build
-       processes should look for the Emacs source code in DIR, when
-       DIR is not the current directory.
+--with-x               Support the X Window System.
+--with-x=no            Don't support the X Window System.
+--x-includes=DIR       Search for X Window System header files in DIR.
+--x-libraries=DIR      Search for X Window System libraries in DIR.
+--with-gcc             Use GCC to compile Emacs.
+--with-gcc=no          Don't use GCC to compile Emacs.
+--run-in-place         Use libraries and data files directly out of the 
+                       source tree.
+--srcdir=DIR           Look for source in DIR.
+--prefix=DIR           Install files below dir.
 
 If successful, ${progname} leaves its status in config.status.  If
 unsuccessful after disturbing the status quo, it removes config.status."
@@ -119,6 +89,9 @@ arguments="$@"
 rip_paths='#disabled# '
 inst_paths=''
 
+### Establish some default values.
+prefix='/usr/local'
+
 while [ $# != 0 ]; do
   arg="$1"
   case "${arg}" in
@@ -239,9 +212,25 @@ Set it to either \`yes' or \`no'."
          inst_paths='#disabled# '
        ;;
 
+       ## Has the user specifiec an installation prefix?
+       "prefix" )
+         ## If the value was omitted, get it from the next argument.
+         if [ "${valomitted}" = "yes" ]; then
+           ## Get the next argument from the argument list, if there is one.
+            if [ $# = 1 ]; then
+             (echo "${progname}: You must give a value for the \`--${optname}' option, as in
+    \`--${optname}=FOO'."
+              echo "${short_usage}") >&2
+             exit 1
+           fi
+           shift; val="$1"
+         fi
+         prefix="${val}"
+        ;;
+
        ## Has the user asked for some help?
        "usage" | "help" )
-         echo "${long_usage}" | more
+         echo "${short_usage}" | more
          exit
        ;;
 
@@ -1016,6 +1005,7 @@ AC_SUBST(inst_paths)
 AC_SUBST(LD_SWITCH_X_SITE)
 AC_SUBST(C_SWITCH_X_SITE)
 AC_SUBST(CFLAGS)
+AC_SUBST(prefix)
 
 AC_DEFINE_UNQUOTED(config_machfile,  "\"${machfile}\"")
 AC_DEFINE_UNQUOTED(config_opsysfile, "\"${opsysfile}\"")