Move duplicated documentation rules to Makefile.shared

- Also, harmonize libm to use CHEWOUT_FILES like libc, rather than chobj.
  Update documentation appropriately.

        * HOWTO: Update.
        * Makefile.shared: Move documentation rules to here...
        * libc/argz/Makefile.am: ... from here ...
        * libc/ctype/Makefile.am: ... and here.
        * libc/errno/Makefile.am: Ditto.
        * libc/iconv/Makefile.am: Ditto.
        * libc/iconv/ccs/Makefile.am : Ditto.
        * libc/iconv/ces/Makefile.am: Ditto.
        * libc/iconv/lib/Makefile.am: Ditto.
        * libc/locale/Makefile.am: Ditto.
        * libc/misc/Makefile.am: Ditto.
        * libc/posix/Makefile.am: Ditto.
        * libc/reent/Makefile.am: Ditto.
        * libc/search/Makefile.am: Ditto.
        * libc/stdio/Makefile.am: Ditto.
        * libc/stdio64/Makefile.am: Ditto.
        * libc/stdlib/Makefile.am : Ditto.
        * libc/string/Makefile.am: Ditto.
        * libc/syscalls/Makefile.am: Ditto.
        * libc/time/Makefile.am : Ditto.
        * libc/unix/Makefile.am: Ditto.
        * libc/xdr/Makefile.am: Ditto.
        * libm/common/Makefile.am: Ditto.
        * libm/complex/Makefile.am: Ditto.
        * libm/math/Makefile.am: Ditto.
        * libm/mathfp/Makefile.am: Ditto.

1 files changed, 2 insertions, 15 deletions

diff --git a/newlib/libm/mathfp/Makefile.am b/newlib/libm/mathfp/Makefile.am
index 0caab07a4..db83ea082 100644
--- a/newlib/libm/mathfp/Makefile.am
+++ b/newlib/libm/mathfp/Makefile.am
@@ -58,7 +58,7 @@ endif # USE_LIBTOOL
 
 include $(srcdir)/../../Makefile.shared
 
-chobj = e_acosh.def \
+CHEWOUT_FILES = e_acosh.def \
 	e_atanh.def \
 	e_hypot.def \
 	e_remainder.def \
@@ -87,20 +87,7 @@ chobj = e_acosh.def \
 	s_tanh.def \
 	w_jn.def
 
-SUFFIXES = .def
-
-CHEW = ../../doc/makedoc -f $(srcdir)/../../doc/doc.str
-
-.c.def:
-	$(CHEW) < $< > $*.def 2> $*.ref
-	touch stmp-def
-
-TARGETDOC = ../tmp.texi
-
-doc: $(chobj)
-	cat $(srcdir)/mathfp.tex >> $(TARGETDOC)
-
-CLEANFILES = $(chobj) *.ref
+CHAPTERS = mathfp.tex
 
 # A partial dependency list.