From: Trevor Woerner <twoer...@gmail.com>

New feature. Allow the user to supply, on the cmdline, a space-separated list
of module/components to process, the script will process only those listed
module/components. The list can be in any arbitrary order, the script takes
care to process them in their correct, dependency order. Warn the user should
there be any module/components from the list which aren't processed (probably
due to misspelling).

Suggested usage:
1. run the script, only generating the list of modules, redirected to a file
$ build.sh -L > list

2. edit list, removing any unneeded module/components

3. run the build as follows:
$ build.sh $PREFIX --modlist "`cat list`" ...

Signed-off-by: Trevor Woerner <twoer...@gmail.com>
---
 build.sh |  109 ++++++++++++++++++++++++++++++++++++++++++++++++++++----------
 1 files changed, 92 insertions(+), 17 deletions(-)

diff --git a/build.sh b/build.sh
index 6c76a5c..fb15cb1 100755
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+APP=$0
+
 envoptions() {
 cat << EOF
 global environment variables you may set:
@@ -864,6 +866,69 @@ build_doc() {
     build doc xorg-docs
 }
 
+# just build the modules supplied on the command-line,
+# in their correct order, as found in $MODULES
+# arguments:
+#   (none)
+# returns:
+#   0 - good
+#   1 - bad
+process_modules() {
+    local inorder
+    local noorder
+    local module
+    local component
+    local processed=""
+    local mc
+    local found
+    local notprocessed=""
+
+    # preconds
+    if [ X"$MODULES" = X ]; then
+       echo "internal process_modules() error, \$MODULES is empty"
+       return 1
+    fi
+
+    # process module/components in-order
+    for inorder in `$APP -L`; do
+       for noorder in $MODULES; do
+           if [ X"$inorder" = X"$noorder" ]; then
+               module=`echo $noorder | cut -d'/' -f1`
+               component=`echo $noorder | cut -d'/' -f2`
+               build $module $component
+               processed="$processed $noorder"
+           fi
+       done
+    done
+
+    # check user-supplied list for extras which weren't processed
+    for noorder in $MODULES; do
+       found=0
+       for mc in $processed; do
+           if [ X"$noorder" = X"$mc" ]; then
+               found=1
+               break
+           fi
+       done
+       if [ $found -eq 0 ]; then
+           notprocessed="$notprocessed $noorder"
+       fi
+    done
+
+    # if any modules from the user-list are not processed
+    # warn the user
+    if [ X"$notprocessed" != X ]; then
+       echo ""
+       echo "***** WARNING: the following user-supplied module/components were 
not processed *****"
+       for mc in $notprocessed; do
+           echo "    $mc"
+       done
+       echo ""
+    fi
+
+    return 0
+}
+
 usage() {
     echo "Usage: $0 [options] prefix"
     echo "  where options are:"
@@ -886,6 +951,7 @@ usage() {
     echo "  --check : run make check in addition to others"
     echo "  --clone : clone non-existing repositories (uses \$GITROOT if set)"
     echo "  --cmd cmd : execute arbitrary git or make command 'cmd'"
+    echo "  --modlist mods : only process the given space-separated list of 
modules"
     echo ""
     echo "Usage: $0 -L"
     echo "  -L : just list modules to build"
@@ -984,6 +1050,11 @@ do
            exit 1
        fi
        ;;
+    --modlist)
+       shift
+       CLONE=1
+       MODULES=$1
+       ;;
     *)
        if [ X"$PREFIX" != X ]; then
            echo "unrecognized and/or too many command-line arguments"
@@ -1014,23 +1085,27 @@ if [ X"$LISTONLY" = X ]; then
     date
 fi
 
-# We must install the global macros before anything else
-build util macros
-build font util
-
-build_proto
-build_lib
-build_mesa
-
-if [ $LIB_ONLY -eq 0 ]; then
-    build_doc
-    build data bitmaps
-    build_app
-    build_xserver
-    build_driver
-    build_data
-    build_font
-    build_util
+if [ X"$MODULES" = X ]; then
+    # We must install the global macros before anything else
+    build util macros
+    build font util
+
+    build_proto
+    build_lib
+    build_mesa
+
+    if [ $LIB_ONLY -eq 0 ]; then
+       build_doc
+       build data bitmaps
+       build_app
+       build_xserver
+       build_driver
+       build_data
+       build_font
+       build_util
+    fi
+else
+    process_modules
 fi
 
 if [ X"$LISTONLY" != X ]; then
-- 
1.7.3.1.50.g1e633

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