From 319df8440fd47a4fbd5e51a90a6b69d6dd28593d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Lucio=20Andr=C3=A9s=20Illanes=20Albornoz=20=28arab=2C=20vx?=
 =?UTF-8?q?p=29?= <l.illanes@gmx.de>
Date: Sat, 10 Sep 2016 15:04:42 +0200
Subject: Adds -d (disable script) and -e (disable script.)

---
 build.sh    |  2 ++
 build.subr  | 20 ++++++++++++++++++++
 build.usage |  4 +++-
 3 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/build.sh b/build.sh
index a6977fa5..1b4e2b28 100755
--- a/build.sh
+++ b/build.sh
@@ -10,6 +10,8 @@ VALID_BUILD_LEVELS="fetch,extract,build_dir,autoconf,patch,configure,clean,build
 while [ ${#} -gt 0 ]; do
 case ${1} in
 -c)	ARG_CLEAN=1; ;;
+-d)	disable_build_script_link "${2}"; exit; ;;
+-e)	enable_build_script_link "${2}"; exit; ;;
 -t*)	export ARG_TARBALL=1; [ "${1#-t.}" != "${1}" ] && TARBALL_SUFFIX=${1#-t.}; ;;
 -v)	export ARG_VERBOSE=1; ;;
 -x)	ARG_XTRACE=1; set -o xtrace; ;;
diff --git a/build.subr b/build.subr
index 237f48c3..c79872fe 100644
--- a/build.subr
+++ b/build.subr
@@ -60,6 +60,26 @@ get_vars_unsafe() {
 	unset _gvu_vval _gvu_vval_;
 };
 
+disable_build_script_link() {
+	if [ -e ${1%.disabled}.disabled ]; then
+		log_msg failexit "Error: build script already disabled.";
+	elif [ ! -e ${1} ]; then
+		log_msg failexit "Error: invalid or non-existent build script filename/level/name.";
+	else
+		echo mv -- ${1} ${1}.disabled;
+		mv -- ${1} ${1}.disabled;
+	fi;
+}
+enable_build_script_link() {
+	if [ -e ${1%.disabled} ]; then
+		log_msg failexit "Error: build script already enabled.";
+	elif [ ! -e ${1%.disabled}.disabled ]; then
+		log_msg failexit "Error: invalid or non-existent build script filename/level/name.";
+	else
+		echo mv -- ${1%.disabled}.disabled ${1%.disabled};
+		mv -- ${1%.disabled}.disabled ${1%.disabled};
+	fi;
+}
 insert_build_script_link() {
 	_ibsl_fname=${1};
 	_ibsl_level=${_ibsl_fname%%.*};
diff --git a/build.usage b/build.usage
index 5a105c00..d11b3915 100644
--- a/build.usage
+++ b/build.usage
@@ -1,10 +1,12 @@
-usage: ./build.sh [-a nt32|nt64] [-b debug|release] [-c] [-h] [-pi level.name.build]
+usage: ./build.sh [-a nt32|nt64] [-b debug|release] [-c] [-d] [-e] [-h] [-pi level.name.build]
                   [-pr level.name.build] [-r ALL|level.name.build[:diff|:step[,...]]]
                   [-t[.gz|.bz2|.xz] [-x]
         -a nt32|nt64           Selects 32-bit or 64-bit architecture; defaults to nt64.
         -b debug|release       Selects debug or release build; defaults to debug.
                                This currently only controls CFLAGS.
         -c                     Clean ${PREFIX} before processing build scripts.
+        -d level.name.build    Disables the specified build script.
+        -e level.name.build    Enables the specified build script.
         -h                     Show this screen.
         -pi level.name.build   Insert link to pkg.build for the specified build script.
                                All consecutive scripts with higher build levels will
-- 
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