This commit allows users to specify a path to their "etags"
executable for use when doing "make tags".
I based this patch off of this one from upstream automake:
https://git.savannah.gnu.org/cgit/automake.git/commit/m4?id=d2ccbd7eb38d6a4277d6f42b994eb5a29b1edf29
This means that I just supplied variables that the user can override
for the tags programs, rather than having the configure scripts
actually check for them. I handle etags and ctags separately because
the intl subdirectory has separate targets for them. This commit
only affects the subdirectories that use handwritten Makefiles; the
ones that use automake will have to wait until we update the version
of automake used to be 1.16.4 or newer before they'll be fixed.
Addresses #103021
gcc/ChangeLog:
PR other/103021
* Makefile.in: Substitute CTAGS, ETAGS, and CSCOPE
variables. Use ETAGS variable in TAGS target.
* configure: Regenerate.
* configure.ac: Allow CTAGS, ETAGS, and CSCOPE
variables to be overridden.
gcc/ada/ChangeLog:
PR other/103021
* gcc-interface/Make-lang.in: Use ETAGS variable in
TAGS target.
gcc/c/ChangeLog:
PR other/103021
* Make-lang.in: Use ETAGS variable in TAGS target.
gcc/cp/ChangeLog:
PR other/103021
* Make-lang.in: Use ETAGS variable in TAGS target.
gcc/d/ChangeLog:
PR other/103021
* Make-lang.in: Use ETAGS variable in TAGS target.
gcc/fortran/ChangeLog:
PR other/103021
* Make-lang.in: Use ETAGS variable in TAGS target.
gcc/go/ChangeLog:
PR other/103021
* Make-lang.in: Use ETAGS variable in TAGS target.
gcc/objc/ChangeLog:
PR other/103021
* Make-lang.in: Use ETAGS variable in TAGS target.
gcc/objcp/ChangeLog:
PR other/103021
* Make-lang.in: Use ETAGS variable in TAGS target.
intl/ChangeLog:
PR other/103021
* Makefile.in: Use ETAGS variable in TAGS target,
CTAGS variable in CTAGS target, and MKID variable
in ID target.
* configure: Regenerate.
* configure.ac: Allow CTAGS, ETAGS, and MKID
variables to be overridden.
libcpp/ChangeLog:
PR other/103021
* Makefile.in: Use ETAGS variable in TAGS target.
* configure: Regenerate.
* configure.ac: Allow ETAGS variable to be overridden.
libiberty/ChangeLog:
PR other/103021
* Makefile.in: Use ETAGS variable in TAGS target.
* configure: Regenerate.
* configure.ac: Allow ETAGS variable to be overridden.
909b30a17e