X-Git-Url: https://ruderich.org/simon/gitweb/?a=blobdiff_plain;ds=inline;f=configure.ac;h=47f9ee2c32af38114b65d22acc5b1a4bfc3ff926;hb=3e894f0f32aa021b5c9033c3c71539c3965aa6de;hp=6248625db45315e73f11a1899cf0cf6b8e8b93ac;hpb=c7f6f13de07d6010c5387a9db26e64310bbc657b;p=coloredstderr%2Fcoloredstderr.git
diff --git a/configure.ac b/configure.ac
index 6248625..47f9ee2 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,4 +1,4 @@
-dnl Copyright (C) 2013 Simon Ruderich
+dnl Copyright (C) 2013-2014 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 .
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])
@@ -36,27 +36,64 @@ if test "x$GCC" = xyes; then
CFLAGS="-Wall -Wextra -Wconversion $CFLAGS"
fi
-AC_CHECK_HEADERS([fcntl.h error.h])
+AC_CHECK_HEADERS([err.h error.h])
+AC_CHECK_HEADERS([fcntl.h],
+ [],[AC_MSG_ERROR([header is required])])
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_C_INLINE
+AX_C___ATTRIBUTE__
+AX_TLS
+
+AC_CHECK_MEMBER([struct _IO_FILE._fileno],
+ [AC_DEFINE([HAVE_STRUCT__IO_FILE__FILENO], 1,
+ [Define to 1 if `_fileno' is a member of `struct _IO_FILE'.])],
+ [],[[#include ]]) dnl ' fix for vim syntax coloring
AC_FUNC_FORK
-AC_CHECK_FUNCS([dup2 memmove setenv strdup])
+AC_CHECK_FUNCS([memmove setenv],
+ [],[AC_MSG_ERROR([function is required])])
+AC_CHECK_FUNCS([execvpe])
+dnl These are not in POSIX.
+AC_CHECK_FUNCS([fwrite_unlocked fputs_unlocked fputc_unlocked])
+dnl Internal functions in libc implementations which must be hooked.
+AC_CHECK_FUNCS([__overflow __swbuf])
+
+dnl Thanks to gperftools' configure.ac (https://code.google.com/p/gperftools).
+AC_MSG_CHECKING([for __builtin_expect])
+AC_LINK_IFELSE([AC_LANG_PROGRAM([],[return __builtin_expect(main != 0, 1)])],
+ [AC_DEFINE([HAVE___BUILTIN_EXPECT], 1,
+ [Define to 1 if the compiler supports __builtin_expect().])
+ AC_MSG_RESULT([yes])],
+ [AC_MSG_RESULT([no])])
AC_SEARCH_LIBS([dlsym], [dl], [], [AC_MSG_ERROR([dlsym() is required])])
+AC_ARG_ENABLE([warnings],
+ [AS_HELP_STRING([--enable-warnings],[enable warning output])],
+ [if test "x$enableval" = xyes; then
+ AC_DEFINE([WARNING], 1, [Define to 1 enable warning output.])
+ fi])
AC_ARG_ENABLE([debug],
[AS_HELP_STRING([--enable-debug],[enable debug output])],
[if test "x$enableval" = xyes; then
- AC_DEFINE([DEBUG], 1, [Define to enable debug output.])
+ AC_DEFINE([DEBUG], 1, [Define to 1 enable debug output.])
+ dnl DEBUG implies WARNING
+ AC_DEFINE([WARNING], 1)
fi])
-dnl Used in tests/Makefile.am to build the test only if error() is available.
+dnl Used in tests/Makefile.am to build the test only if function is available.
+AM_CONDITIONAL([HAVE_ERR_H],[test "x$ac_cv_header_err_h" = xyes])
AM_CONDITIONAL([HAVE_ERROR_H],[test "x$ac_cv_header_error_h" = xyes])
+AM_CONDITIONAL([HAVE_VFORK],[test "x$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