tags and cscope support really belongs in a shell script
as they do not benefit from the make functionality.
Moving the support to a shell script has several benefits:
- The readability of the code has increased a lot
- More people is able to extend the tags support
- We see less changes to the top-level Makefile
The shell script version includes improvements from:
Alexey Dobriyan <adobriyan@gmail.com> (jump to kconfig symbols)
Alexey Dobriyan <adobriyan@gmail.com> (drop ./ in paths)
Ian Campbell <ijc@hellion.org.uk> (simplified find algorithms)
This version has a few caveats:
=> It does not support ALLSOURCE_ARCHS
- it is easy to add if it is really used
=> It assumes all archs have moved to arch/$ARCH/include
- until that happens we have a few additional hits in the archs
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Tested-by: Ian Campbell <ijc@hellion.org.uk>
diff --git a/scripts/tags.sh b/scripts/tags.sh
new file mode 100755
index 0000000..47274dc
--- /dev/null
+++ b/scripts/tags.sh
@@ -0,0 +1,160 @@
+#!/bin/sh
+# Generate tags or cscope files
+# Usage tags.sh <mode>
+#
+# mode may be any of: tags, TAGS, cscope
+#
+# Uses the following environment variables:
+# ARCH, SUBARCH, srctree, src, obj
+
+if [ $KBUILD_VERBOSE == 1 ]; then
+ set -x
+fi
+
+# This is a duplicate of RCS_FIND_IGNORE without escaped '()'
+ignore="( -name SCCS -o -name BitKeeper -o -name .svn -o \
+ -name CVS -o -name .pc -o -name .hg -o \
+ -name .git ) \
+ -prune -o"
+
+# Do not use full path is we do not use O=.. builds
+if [ ${src} == ${obj} ]; then
+ tree=
+else
+ tree=${srctree}
+fi
+
+# find sources in arch/$ARCH
+find_arch_sources()
+{
+ find ${tree}arch/$1 $ignore -name $2 -print;
+}
+
+# find sources in arch/$1/include
+find_arch_include_sources()
+{
+ find ${tree}arch/$1/include $ignore -name $2 -print;
+}
+
+# find sources in include/
+find_include_sources()
+{
+ find ${tree}include $ignore -name config -prune -o -name $1 -print;
+}
+
+# find sources in rest of tree
+# we could benefit from a list of dirs to search in here
+find_other_sources()
+{
+ find ${tree}* $ignore \
+ \( -name include -o -name arch -o -name '.tmp_*' \) -prune -o \
+ -name $1 -print;
+}
+
+find_sources()
+{
+ find_arch_sources $1 $2
+ find_include_sources $2
+ find_other_sources $2
+}
+
+all_sources()
+{
+ find_sources $SRCARCH *.[chS]
+ if [ ! -z "$archinclude" ]; then
+ find_arch_include_sources $archinclude *.[chS]
+ fi
+}
+
+all_kconfigs()
+{
+ find_sources $SRCARCH "Kconfig*"
+}
+
+all_defconfigs()
+{
+ find_sources $SRCARCH "defconfig"
+}
+
+docscope()
+{
+ (echo \-k; echo \-q; all_sources) > cscope.files
+ cscope -b -f cscope.out
+}
+
+exuberant()
+{
+ all_sources > all
+ all_sources | xargs $1 -a \
+ -I __initdata,__exitdata,__acquires,__releases \
+ -I __read_mostly,____cacheline_aligned \
+ -I ____cacheline_aligned_in_smp \
+ -I ____cacheline_internodealigned_in_smp \
+ -I EXPORT_SYMBOL,EXPORT_SYMBOL_GPL \
+ --extra=+f --c-kinds=+px \
+ --regex-asm='/^ENTRY\(([^)]*)\).*/\1/'
+
+ all_kconfigs | xargs $1 -a \
+ --langdef=kconfig --language-force=kconfig \
+ --regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/\2/'
+
+ all_kconfigs | xargs $1 -a \
+ --langdef=kconfig --language-force=kconfig \
+ --regex-kconfig='/^[[:blank:]]*(menu|)config[[:blank:]]+([[:alnum:]_]+)/CONFIG_\2/'
+
+ all_defconfigs | xargs -r $1 -a \
+ --langdef=dotconfig --language-force=dotconfig \
+ --regex-dotconfig='/^#?[[:blank:]]*(CONFIG_[[:alnum:]_]+)/\1/'
+
+}
+
+emacs()
+{
+ all_sources | xargs $1 -a
+
+ all_kconfigs | xargs $1 -a \
+ --regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/\3/'
+
+ all_kconfigs | xargs $1 -a \
+ --regex='/^[ \t]*\(\(menu\)*config\)[ \t]+\([a-zA-Z0-9_]+\)/CONFIG_\3/'
+
+ all_defconfigs | xargs -r $1 -a \
+ --regex='/^#?[ \t]?\(CONFIG_[a-zA-Z0-9_]+\)/\1/'
+}
+
+xtags()
+{
+ if $1 --version 2>&1 | grep -iq exuberant; then
+ exuberant $1
+ elif $1 --version 2>&1 | grep -iq emacs; then
+ emacs $1
+ else
+ all_sources | xargs $1 -a
+ fi
+}
+
+
+# Support um (which uses SUBARCH)
+if [ ${ARCH} == um ]; then
+ if [ $SUBARCH == i386 ]; then
+ archinclude=x86
+ elif [ $SUBARCH == x86_64 ]; then
+ archinclude=x86
+ else
+ archinclude=${SUBARCH}
+ fi
+fi
+
+case "$1" in
+ "cscope")
+ docscope
+ ;;
+
+ "tags")
+ xtags ctags
+ ;;
+
+ "TAGS")
+ xtags etags
+ ;;
+esac