install_headers.sh: make more user friendly

Make it easier to run this by hand and don't abort when recursive chown
and chmod fail as these often aren't due to uClibc settings.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

extra/scripts/install_headers.sh

@@ -4,6 +4,10 @@
 # $2 = dst dir
 # $top_builddir = well you guessed it
 
+srcdir=${1:-include}
+dstdir=${2:-`. ./.config 2>/dev/null && echo ${DEVEL_PREFIX}/include`}
+: ${top_builddir:=.}
+
 die_if_not_dir()
 {
 	for dir in "$@"; do
@@ -19,9 +23,9 @@ umask 022
 
 
 # Sanity tests
-die_if_not_dir "$1"
-mkdir -p "$2" 2>/dev/null
-die_if_not_dir "$2"
+die_if_not_dir "${srcdir}"
+mkdir -p "${dstdir}" 2>/dev/null
+die_if_not_dir "${dstdir}"
 die_if_not_dir "$top_builddir"
 if ! test -x "$top_builddir/extra/scripts/unifdef"; then
 	echo "Error: need '$top_builddir/extra/scripts/unifdef' executable"
@@ -31,16 +35,16 @@ fi
 
 # Sanitize and copy uclibc headers
 (
-# We must cd, or else we'll prepend "$1" to filenames!
-cd "$1" || exit 1
+# We must cd, or else we'll prepend "${srcdir}" to filenames!
+cd "${srcdir}" || exit 1
 find . ! -name '.' -a ! -path '*/.*' | sed -e 's/^\.\///' -e '/^config\//d' \
 	-e '/^config$/d'
 ) | \
 (
 IFS=''
 while read -r filename; do
-	if test -d "$1/$filename"; then
-		mkdir -p "$2/$filename" 2>/dev/null
+	if test -d "${srcdir}/$filename"; then
+		mkdir -p "${dstdir}/$filename" 2>/dev/null
 		continue
 	fi
 	if test x"${filename##libc-*.h}" = x""; then
@@ -55,15 +59,18 @@ while read -r filename; do
 		-U_LIBC \
 		-U__UCLIBC_GEN_LOCALE \
 		-U__NO_CTYPE \
-		"$1/$filename" \
+		"${srcdir}/$filename" \
 	| sed -e '/^rtld_hidden_proto[ 	]*([a-zA-Z0-9_]*)$/d' \
 	| sed -e '/^lib\(c\|m\|resolv\|dl\|intl\|rt\|nsl\|util\|crypt\|pthread\)_hidden_proto[ 	]*([a-zA-Z0-9_]*)$/d' \
-	>"$2/$filename"
+	>"${dstdir}/$filename"
 done
 )
 
 
 # Fix mode/owner bits
-cd "$2" || exit 1
+cd "${dstdir}" || exit 1
 chmod -R u=rwX,go=rX . >/dev/null 2>&1
 chown -R `id | sed 's/^uid=\([0-9]*\).*gid=\([0-9]*\).*$/\1:\2/'` . >/dev/null 2>&1
+
+# ignore errors on unrelated files
+exit 0