Re: build failures (tcgetsid issue)

[Bruno Haible]

Simon Josefsson wrote:
> ./config.log contains the content below.  What's interesting is
> that there is no #include <termios.h> which I believe is needed?

Good point. I'm applying the patches below, that fixes it.

> The gltests/config.log file contains:
> 
> configure:30414: checking whether tcgetsid is declared
> configure:30414: result: yes
> 
> however ./config.log contains the content below.

Really bizarre. I tried the same thing on a glibc/Linux system, and got
S["HAVE_DECL_TCGETSID"]="0"
twice.

> maybe other headers are
> enabled there, and the tcgetsid prototype gets defined indirectly.

The only glibc header that includes <termios.h> is <pty.h>, which is not
included by the test program. Are different gcc options enabled in . and
gltests?

Bruno


2011-08-08  Bruno Haible  <address@hidden>

        iswblank: Detect declaration correctly.
        * m4/iswblank.m4 (gl_FUNC_ISWBLANK): Use correct headers in
        AC_CHECK_DECLS invocation.

2011-08-08  Bruno Haible  <address@hidden>

        tcgetsid: Detect declaration correctly.
        * m4/tcgetsid.m4 (gl_FUNC_TCGETSID): Use correct headers in
        AC_CHECK_DECLS invocation.
        Reported by Simon Josefsson.

--- m4/iswblank.m4.orig Mon Aug  8 23:46:40 2011
+++ m4/iswblank.m4      Mon Aug  8 23:43:16 2011
@@ -1,4 +1,4 @@
-# iswblank.m4 serial 3
+# iswblank.m4 serial 4
 dnl Copyright (C) 2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -11,7 +11,17 @@
   dnl Persuade glibc <wctype.h> to declare iswblank().
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
   AC_CHECK_FUNCS_ONCE([iswblank])
-  AC_CHECK_DECLS_ONCE([iswblank])
+  AC_CHECK_DECLS([iswblank], , , [[
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+   <wchar.h>.
+   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be included
+   before <wchar.h>.  */
+#include <stddef.h>
+#include <stdio.h>
+#include <time.h>
+#include <wchar.h>
+#include <wctype.h>
+]])
   if test $ac_cv_func_iswblank = no; then
     HAVE_ISWBLANK=0
     if test $ac_cv_have_decl_iswblank = yes; then
--- m4/tcgetsid.m4.orig Mon Aug  8 23:46:40 2011
+++ m4/tcgetsid.m4      Mon Aug  8 23:43:19 2011
@@ -1,4 +1,4 @@
-# tcgetsid.m4 serial 3
+# tcgetsid.m4 serial 4
 dnl Copyright (C) 2010-2011 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -11,7 +11,7 @@
   dnl Persuade glibc <termios.h> to declare tcgetsid().
   AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
 
-  AC_CHECK_DECLS_ONCE([tcgetsid])
+  AC_CHECK_DECLS([tcgetsid], , , [[#include <termios.h>]])
   if test $ac_cv_have_decl_tcgetsid = no; then
     HAVE_DECL_TCGETSID=0
   fi
-- 
In memoriam Edward Pimental <http://en.wikipedia.org/wiki/Edward_Pimental>