X-Git-Url: https://ruderich.org/simon/gitweb/?p=coloredstderr%2Fcoloredstderr.git;a=blobdiff_plain;f=configure.ac;h=73c7545d1d4f3aa3dc48ad6f032f6b3f4dc0353d;hp=a96edb40a419d394c41d8b28c12caede103c2422;hb=8a65b4486febf00e3fad5bafc3773a811e675a4c;hpb=941370dda9f22ca42e1d5b3cd580d7e7091d40bc

diff --git a/configure.ac b/configure.ac
index a96edb4..73c7545 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-dnl Copyright (C) 2013  Simon Ruderich
+dnl Copyright (C) 2013-2015  Simon Ruderich
 dnl
 dnl This program is free software: you can redistribute it and/or modify
 dnl it under the terms of the GNU General Public License as published by
@@ -15,7 +15,7 @@ dnl along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 
 AC_PREREQ([2.69])
-AC_INIT([coloredstderr],[0.1],[simon@ruderich.org])
+AC_INIT([coloredstderr],[0.2],[simon@ruderich.org])
 
 AC_CONFIG_AUX_DIR([build-aux])
 AC_CONFIG_MACRO_DIR([m4])
@@ -46,6 +46,7 @@ AC_TYPE_SSIZE_T
 
 AC_C_INLINE
 AX_C___ATTRIBUTE__
+AX_TLS
 
 AC_CHECK_MEMBER([struct _IO_FILE._fileno],
                 [AC_DEFINE([HAVE_STRUCT__IO_FILE__FILENO], 1,
@@ -56,6 +57,10 @@ AC_FUNC_FORK
 AC_CHECK_FUNCS([memmove setenv],
                [],[AC_MSG_ERROR([function is required])])
 AC_CHECK_FUNCS([execvpe])
+dnl These are not in POSIX.
+AC_CHECK_FUNCS([fwrite_unlocked fputs_unlocked fputc_unlocked])
+dnl Internal functions in libc implementations which must be hooked.
+AC_CHECK_FUNCS([__overflow __swbuf])
 
 dnl Thanks to gperftools' configure.ac (https://code.google.com/p/gperftools).
 AC_MSG_CHECKING([for __builtin_expect])
@@ -87,3 +92,8 @@ AM_CONDITIONAL([HAVE_VFORK],[test "x$ac_cv_func_vfork_works" = xyes])
 
 AC_CONFIG_FILES([Makefile src/Makefile tests/Makefile])
 AC_OUTPUT
+
+if test x"$ac_cv_tls" = x"none"; then
+    AC_MSG_WARN([thread-local storage not supported by compiler, \
+possible race condition in threaded programs])
+fi