autoscan and AC_CHECK_DECLS

[Mike Castle]

Ok.  Strange interactions with autoscan and autom4te.cache.  And a possible
bug in autoscan otherwise.

Starting in a clean directory:

address@hidden:06pm]~/foo(203) ls
address@hidden:06pm]~/foo(204) echo "int sys_siglist;" > a.c
address@hidden:06pm]~/foo(205) echo "int st_blksize;" >> a.c
address@hidden:06pm]~/foo(206) touch configure.ac
address@hidden:06pm]~/foo(207) autoscan
configure.ac: warning: missing AC_CHECK_DECLS([sys_siglist]) wanted by: a.c:1
configure.ac: warning: missing AC_CHECK_MEMBERS([struct stat.st_blksize]) 
wanted by: a.c:2
configure.ac: warning: missing AC_PREREQ wanted by: autoscan
configure.ac: warning: missing AC_PROG_CC wanted by: a.c
4.820u 0.380s 0:05.22 99.6%     0+0k 0+0io 1909pf+0w
address@hidden:06pm]~/foo(208) mv -f configure.scan configure.ac
address@hidden:07pm]~/foo(209) autoscan
configure.ac: warning: missing AC_CHECK_DECLS([sys_siglist]) wanted by: a.c:1
configure.ac: warning: missing AC_CHECK_MEMBERS([struct stat.st_blksize]) 
wanted by: a.c:2
configure.ac: warning: missing AC_PREREQ wanted by: autoscan
configure.ac: warning: missing AC_PROG_CC wanted by: a.c
4.810u 0.350s 0:05.19 99.4%     0+0k 0+0io 1797pf+0w
address@hidden:07pm]~/foo(210) rm -rf autom4te.cache/
address@hidden:07pm]~/foo(211) autoscan
configure.ac: warning: missing AC_CHECK_DECLS([sys_siglist]) wanted by: a.c:1
9.630u 0.420s 0:10.12 99.3%     0+0k 0+0io 1937pf+0w
address@hidden:07pm]~/foo(213) grep siglist configure.ac
AC_CHECK_DECLS([sys_siglist])
address@hidden:07pm]~/foo(215) autoscan -V
autoscan (GNU Autoconf) 2.57
Written by David J. MacKenzie and Akim Demaille.



So, why different results after nuking autom4te.cache?  Also, why is it
bitching about sys_siglist?

Thanks,
mrc
-- 
     Mike Castle      address@hidden      www.netcom.com/~dalgoda/
    We are all of us living in the shadow of Manhattan.  -- Watchmen
fatal ("You are in a maze of twisty compiler features, all different"); -- gcc