gen_links.sh: auto-generate .gitignore files to ignore symlinks

In each subdir that is a target for symlinks, automatically ignore the results
of gen_links():

- At the top of gen_links.sh.inc, clear the .gitignore.
- In the loop, add each link name to the local .gitignore.
- In selected gen_links.sh, there is also a "manual" link creationg. So that
  this also ends up in the local .gitignore, have the link creation as separate
  gen_link() macro which at the same time adds to ./.gitignore.
- in the root .gitignore, ignore all the subdirs' generated */.gitignore files.

Change-Id: I73c11fe8362358bf7e1bdf0e1be53399b5d3351b

.gitignore

@@ -5,3 +5,4 @@ deps/*/
 *.log
 *.so
 compile
+*/.gitignore

bsc-nat/gen_links.sh

@@ -28,7 +28,7 @@ gen_links $DIR $FILES
 DIR=../SCCP_CNL113341/src
 FILES="SCCP_Emulation.ttcn  SCCP_EncDec.cc  SCCP_Mapping.ttcnpp  SCCP_Types.ttcn  SCCPasp_Types.ttcn"
 gen_links $DIR $FILES
-ln -sf SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
+gen_link SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
 
 DIR=$BASEDIR/titan.ProtocolModules.BSSMAP_v11.2.0/src
 FILES="BSSAP_Types.ttcn"

bsc/gen_links.sh

@@ -49,7 +49,7 @@ gen_links $DIR $FILES
 DIR=../SCCP_CNL113341/src
 FILES="SCCP_Emulation.ttcn  SCCP_Mapping.ttcnpp  SCCP_Types.ttcn  SCCPasp_Types.ttcn"
 gen_links $DIR $FILES
-ln -sf SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
+gen_link SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
 
 DIR=$BASEDIR/titan.ProtocolModules.BSSMAP_v11.2.0/src
 FILES="BSSAP_Types.ttcn"

gen_links.sh.inc

@@ -1,12 +1,21 @@
 #!dont_run_this
 # This file is sourced by */gen_links.sh
 
+rm -f .gitignore
+
+gen_link() {
+	src="$1"
+	f="$2"
+	echo "Linking $f"
+	ln -sf "$src" "$f"
+	echo "$f" >> .gitignore
+}
+
 gen_links() {
 	DIR=$1
 	shift
 	FILES=$*
 	for f in $FILES; do
-		echo "Linking $f"
-		ln -sf $DIR/$f $f
+		gen_link "$DIR/$f" "$f"
 	done
 }

msc/gen_links.sh

@@ -44,7 +44,7 @@ gen_links $DIR $FILES
 DIR=../SCCP_CNL113341/src
 FILES="SCCP_Emulation.ttcn  SCCP_EncDec.cc  SCCP_Mapping.ttcnpp  SCCP_Types.ttcn  SCCPasp_Types.ttcn"
 gen_links $DIR $FILES
-ln -s SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
+gen_link SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
 
 DIR=$BASEDIR/titan.ProtocolModules.BSSMAP_v11.2.0/src
 FILES="BSSAP_Types.ttcn"

selftest/gen_links.sh

@@ -29,7 +29,7 @@ gen_links $DIR $FILES
 DIR=../SCCP_CNL113341/src
 FILES="SCCP_Emulation.ttcn  SCCP_Mapping.ttcnpp  SCCP_Types.ttcn  SCCPasp_Types.ttcn"
 gen_links $DIR $FILES
-ln -sf SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
+gen_link SCCP_Mapping.ttcnpp SCCP_Mapping.ttcn
 
 DIR=$BASEDIR/titan.ProtocolModules.BSSMAP_v11.2.0/src
 FILES="BSSAP_Types.ttcn"