From f8653decf5301289586d99bf99f5f2af36c67f3e Mon Sep 17 00:00:00 2001
From: Oliver Smith <osmith@sysmocom.de>
Date: Mon, 25 Mar 2019 16:57:00 +0100
Subject: [PATCH] osmo-build-dep.sh: cd into subdir before building

Support building the legacy openbsc source with osmo-build.dep.sh. This
will be used by the upcoming osmocom-build-old-tags-against-master.sh
script.

Related: OS#3765
Change-Id: I852e103e80bf295f692cf13c4cb38e80fbc19eca
---
 scripts/common.sh         | 10 ++++++++++
 scripts/osmo-build-dep.sh |  6 ++++++
 2 files changed, 16 insertions(+)

diff --git a/scripts/common.sh b/scripts/common.sh
index 9f274d77..0a32c31e 100644
--- a/scripts/common.sh
+++ b/scripts/common.sh
@@ -59,3 +59,13 @@ osmo_git_last_tags() {
 	ret="$(osmo_git_last_commits_tags "$1" "$2" "$3")"
 	echo "$ret" | cut -d/ -f 3
 }
+
+# Print the subdirectory of the repository where the source lies (configure.ac etc.).
+# Print nothing when the source is in the topdir of the repository.
+osmo_source_subdir() {
+	case "$1" in
+		openbsc)
+			echo "openbsc"
+			;;
+	esac
+}
diff --git a/scripts/osmo-build-dep.sh b/scripts/osmo-build-dep.sh
index dfec9be7..2e4fb314 100755
--- a/scripts/osmo-build-dep.sh
+++ b/scripts/osmo-build-dep.sh
@@ -1,4 +1,5 @@
 #!/bin/sh
+. "$(dirname "$0")/common.sh"
 
 project="$1"
 branch="$2"
@@ -48,6 +49,11 @@ cd "$project"
 # of the -I and -L search paths
 mkdir -p "$inst/stow"
 
+subdir="$(osmo_source_subdir "$project")"
+if [ -n "$subdir" ]; then
+	cd "$subdir"
+fi
+
 autoreconf --install --force
 ./configure --prefix="$inst/stow/$project" --with-systemdsystemunitdir="$inst/stow/$project/lib/systemd/system" $cfg
 $MAKE $PARALLEL_MAKE install