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Re: Does CVS build?
On Wed, Aug 15, 2001 at 03:51:57PM -0400, Christopher Faylor wrote:
>>This is caused by the following patch. What's up Chris?
>>
>>Mon Aug 13 22:26:01 2001 Christopher Faylor <cgf@cygnus.com>
>>
>> * libc/include/sys/errno.h: Declare sys_errlist and sys_nerr, >under
>> Cygwin.
>
>WIP. I know that you will all use your substantial programming skills
>to work around this problem while libiberty is being fixed.
Here is a libiberty patch to try. configure has to be regenerated after applying
this patch.
cgf
Index: configure.in
===================================================================
RCS file: /cvs/uberbaum/libiberty/configure.in,v
retrieving revision 1.33
diff -p -r1.33 configure.in
*** configure.in 2001/07/05 17:24:39 1.33
--- configure.in 2001/08/15 20:04:49
*************** if test -n "${with_target_subdir}"; then
*** 177,184 ****
# Of the functions in $checkfuncs, newlib only has strerror.
AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
! setobjs=yes
!
fi
else
--- 177,186 ----
# Of the functions in $checkfuncs, newlib only has strerror.
AC_DEFINE_NOAUTOHEADER(HAVE_STRERROR)
! case "$host" in
! *-*-cygwin*) ;;
! *) setobjs=yes ;;
! esac
fi
else
*************** if test -z "${setobjs}"; then
*** 221,233 ****
setobjs=yes
;;
- esac
- fi
-
- if test -z "${setobjs}"; then
-
- case "${host}" in
-
*-*-cygwin*)
# The Cygwin library actually uses a couple of files from
# libiberty when it is built. If we are building a native
--- 223,228 ----
*************** if test -z "${setobjs}"; then
*** 247,252 ****
--- 242,272 ----
funcs="`echo $funcs | sed -e 's/random//'`"
LIBOBJS="$LIBOBJS random.o"
vars="`echo $vars | sed -e 's/sys_siglist//'`"
+ # Newer cygwins define sys_errlist and sys_nerr.
+ # We have a chicken/egg situation here, though. How do we know that
+ # the toolchain being built contains a newer cygwin?
+ # The code below checks for the existence of sys_errlist in the
+ # winsup/cygwin/cygwin.din file. The assumption is that you are going
+ # to be building a dll which contains this global.
+ # If this is not found then check if the export is in the library
+ # that is used by GCC. Define the appropriate libiberty_cv_var variables
+ # if so.
+ if test -z "$libiberty_cv_var_sys_errlist"
+ then
+ eval `sed -n -e 's/^sys_errlist.*/libiberty_cv_var_sys_errlist=yes/p' \
+ -e 's/^sys_nerr .*/libiberty_cv_var_sys_nerr=yes/p' \
+ "$srcdir/../winsup/cygwin/cygwin.din" 2>/dev/null`
+ if test -z "$libiberty_cv_var_sys_errlist"
+ then
+ for v in sys_errlist sys_nerr; do
+ AC_TRY_LINK([int *p;], [extern int _imp__$v; p = &_imp__$v;],
+ [eval "libiberty_cv_var_$v=yes"],
+ [eval "libiberty_cv_var_$v=no"])
+ done
+ fi
+ fi
+ test -z "$libiberty_cv_var_sys_errlist" && libiberty_cv_var_sys_errlist=no
+ test -z "$libiberty_cv_var_sys_nerr" && libiberty_cv_var_sys_nerr=no
checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//'`"
fi
;;