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Add configure check to see whether <string.h> and <strings.h> may both be

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included, and then include <strings.h> if so.  Several systems already
needed <strings.h> anyway.  Some new systems that claim to conform to the
Unix 9x "standard" do not declare str[n]casemp() in string.h, and C99
compilers will not like that.
This commit is contained in:
Peter Eisentraut
2000-11-03 18:43:52 +00:00
parent b98ba2a04c
commit dfda21e7a6
8 changed files with 265 additions and 193 deletions
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29
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 1.4 2000/10/02 03:58:31 momjian Exp $
# $Header: /cvsroot/pgsql/config/c-library.m4,v 1.5 2000/11/03 18:43:51 petere Exp $
# PGAC_VAR_INT_TIMEZONE
@ -96,3 +96,30 @@ if test x"$pgac_cv_func_posix_signals" = xyes ; then
fi
HAVE_POSIX_SIGNALS=$pgac_cv_func_posix_signals
AC_SUBST(HAVE_POSIX_SIGNALS)])# PGAC_FUNC_POSIX_SIGNALS
# PGAC_HEADER_STRING
# ------------------
# Tests whether <string.h> and <strings.h> can both be included
# (without generating warnings). This is mostly useful if you need
# str[n]casecmp(), since this is not in the "standard" <string.h>
# on some systems.
AC_DEFUN([PGAC_HEADER_STRING],
[AC_CACHE_CHECK([whether string.h and strings.h may both be included],
[pgac_cv_header_strings_both],
[AC_TRY_CPP(
[#include <string.h>
#include <strings.h>
],
[AC_TRY_COMPILE(
[#include <string.h>
#include <strings.h>
],
[int n = strcasecmp("a", "b");],
[pgac_cv_header_strings_both=yes],
[pgac_cv_header_strings_both=no])],
[pgac_cv_header_strings_both=no])])
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])