From 4e7d0906c1047516ab6517e3abd4a83cba98139d Mon Sep 17 00:00:00 2001
From: Alexey Neyman <stilor@att.net>
Date: Sat, 7 Apr 2018 14:39:56 -0700
Subject: Support out-of-tree local builds

Signed-off-by: Alexey Neyman <stilor@att.net>

diff --git a/ct-ng.in b/ct-ng.in
index 926ba71..2331b86 100644
--- a/ct-ng.in
+++ b/ct-ng.in
@@ -17,7 +17,7 @@ export CT_TOP_DIR:=$(shell pwd)
 ifeq (@enable_local@,yes)
 # automake does not allow to set pkgxxxdir, they are always derived from
 # a respective xxxdir. So, for enable-local case, set them directly here.
-export CT_LIB_DIR:=$(CT_TOP_DIR)
+export CT_LIB_DIR:=$(shell cd "@srcdir@" && pwd)
 export CT_LIBEXEC_DIR:=$(CT_TOP_DIR)/kconfig
 export CT_DOC_DIR:=$(CT_TOP_DIR)/docs
 else
diff --git a/scripts/crosstool-NG.sh b/scripts/crosstool-NG.sh
index 4d79e48..d4414b5 100644
--- a/scripts/crosstool-NG.sh
+++ b/scripts/crosstool-NG.sh
@@ -111,7 +111,7 @@ CT_TestOrAbort "The CONFIG_SHELL '${CT_CONFIG_SHELL}' is not valid" -f "${CT_CON
 CT_TOOLS_OVERRIDE_DIR="${CT_WORK_DIR}/tools"
 CT_DoLog DEBUG "Creating bin-override for tools in '${CT_TOOLS_OVERRIDE_DIR}'"
 CT_DoExecLog DEBUG mkdir -p "${CT_TOOLS_OVERRIDE_DIR}/bin"
-cat "${CT_LIB_DIR}/paths.sh" |while read trash line; do
+cat "${paths_sh_location}" |while read trash line; do
     tool="${line%%=*}"
     # Suppress extra quoting
     eval path=${line#*=}
diff --git a/scripts/functions b/scripts/functions
index 62966fd..0b8fba5 100644
--- a/scripts/functions
+++ b/scripts/functions
@@ -985,7 +985,7 @@ CT_GetFile()
 # Two wrappers to call config.(guess|sub) either from CT_TOP_DIR or CT_LIB_DIR.
 # Those from CT_TOP_DIR, if they exist, will be be more recent than those from CT_LIB_DIR.
 CT_DoConfigGuess() {
-    if [ -x "${CT_TOP_DIR}/scripts/config.guess" ]; then
+    if [ -r "${CT_TOP_DIR}/scripts/config.guess" ]; then
         "${CT_CONFIG_SHELL}" "${CT_TOP_DIR}/scripts/config.guess"
     else
         "${CT_CONFIG_SHELL}" "${CT_LIB_DIR}/scripts/config.guess"
@@ -993,7 +993,7 @@ CT_DoConfigGuess() {
 }
 
 CT_DoConfigSub() {
-    if [ -x "${CT_TOP_DIR}/scripts/config.sub" ]; then
+    if [ -r "${CT_TOP_DIR}/scripts/config.sub" ]; then
         "${CT_CONFIG_SHELL}" "${CT_TOP_DIR}/scripts/config.sub" "$@"
     else
         "${CT_CONFIG_SHELL}" "${CT_LIB_DIR}/scripts/config.sub" "$@"
@@ -2283,3 +2283,16 @@ CT_GetChoicePkgBuildVersion()
     eval "component=\${CT_${choice}_CHOICE_KSYM}"
     CT_GetPkgBuildVersion "${choice}" "${component}" "${var}"
 }
+
+# Finally, load paths.sh. For --enable-local build, it is located in
+# the current directory (CT_TOP_DIR) while the rest of the scripts are
+# in the source directory (CT_LIB_DIR). For other setups, paths.sh
+# is in CT_LIB_DIR.
+if [ -r "${CT_LIB_DIR}/paths.sh" ]; then
+    paths_sh_location="${CT_LIB_DIR}/paths.sh"
+elif [ -r "${CT_TOP_DIR}/paths.sh" ]; then
+    paths_sh_location="${CT_TOP_DIR}/paths.sh"
+else
+    CT_Error "Not found: paths.sh"
+fi
+. "${paths_sh_location}"
diff --git a/scripts/saveSample.sh b/scripts/saveSample.sh
index 5fab6d9..2f4a10b 100644
--- a/scripts/saveSample.sh
+++ b/scripts/saveSample.sh
@@ -7,7 +7,6 @@
 #  - info about who reported the sample
 
 # Parse the tools' paths configuration
-. "${CT_LIB_DIR}/paths.sh"
 . "${CT_LIB_DIR}/scripts/functions"
 
 CT_LoadConfig
diff --git a/scripts/show-config.sh b/scripts/show-config.sh
index 9e56f07..7112269 100644
--- a/scripts/show-config.sh
+++ b/scripts/show-config.sh
@@ -2,7 +2,6 @@
 # the versions of the main tools
 
 # Use tools discovered by ./configure
-. "${CT_LIB_DIR}/paths.sh"
 . "${CT_LIB_DIR}/scripts/functions"
 
 [ "$1" = "-v" ] && opt="$1" && shift
diff --git a/scripts/show-tuple.sh b/scripts/show-tuple.sh
index 9031b3c..4b0b9b0 100644
--- a/scripts/show-tuple.sh
+++ b/scripts/show-tuple.sh
@@ -1,9 +1,6 @@
 # What we need:
 #  - the .config file
 
-# Parse the tools' paths configuration
-. "${CT_LIB_DIR}/paths.sh"
-
 # Parse the common functions
 . "${CT_LIB_DIR}/scripts/functions"
 
-- 
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