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Add configure check for sys_nerr, to end all discussions.

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This commit is contained in:
Peter Eisentraut
2001-01-09 18:40:15 +00:00
parent af26d6a4a2
commit c3f9371956
9 changed files with 110 additions and 71 deletions
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17
config/c-library.m4
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@@ -1,5 +1,5 @@
# Macros that test various C library quirks
# $Header: /cvsroot/pgsql/config/c-library.m4,v 1.5 2000/11/03 18:43:51 petere Exp $
# $Header: /cvsroot/pgsql/config/c-library.m4,v 1.6 2001/01/09 18:40:13 petere Exp $
# PGAC_VAR_INT_TIMEZONE
@@ -123,3 +123,18 @@ if test x"$pgac_cv_header_strings_both" = x"yes"; then
AC_DEFINE([STRING_H_WITH_STRINGS_H], 1,
[Define if string.h and strings.h may both be included])
fi])
# PGAC_VAR_SYS_NERR
# -----------------
# Check if the global variable 'sys_nerr' exists. If so, define
# HAVE_SYS_NERR.
AC_DEFUN([PGAC_VAR_SYS_NERR],
[AC_CACHE_CHECK([for sys_nerr], pgac_cv_var_sys_nerr,
[AC_TRY_LINK([extern int sys_nerr;],
[int x = sys_nerr;],
[pgac_cv_var_sys_nerr=yes],
[pgac_cv_var_sys_nerr=no])])
if test x"$pgac_cv_var_sys_nerr" = xyes ; then
AC_DEFINE(HAVE_SYS_NERR,, [Set to 1 if you have the global variable sys_nerr])
fi])# PGAC_VAR_SYS_NERR