Handle err.h functions on windows

CMakeLists.txt

@@ -14,12 +14,24 @@ INCLUDE_DIRECTORIES(${TTIP_INCLUDE_DIRS})
 
 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra")
 
-IF(NOT WIN32)
-	ADD_DEFINITIONS(-DHAVE_FORK)
-ENDIF(NOT WIN32)
-
 ADD_DEFINITIONS(-std=c99)
 
+INCLUDE(CheckFunctionExists)
+INCLUDE(CheckIncludeFile)
+
+CHECK_FUNCTION_EXISTS(fork HAVE_FORK)
+CHECK_INCLUDE_FILE(err.h HAVE_ERR_H)
+
+IF(HAVE_FORK)
+	ADD_DEFINITIONS(-DHAVE_FORK)
+ENDIF(HAVE_FORK)
+IF(NOT HAVE_ERR_H)
+	INCLUDE_DIRECTORIES(compat) # err.h compatibility for windows/mingw
+ENDIF(NOT HAVE_ERR_H)
+IF(WIN32)
+	SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -mconsole")
+ENDIF(WIN32)
+
 # sources
 SET(TILETOOL_SRCS
 	tiletool/bounds.c

compat/err.h

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2012 Dmitry Marakasov
+ *
+ * This file is part of tiletool.
+ *
+ * tiletool is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * tiletool is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with tiletool.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef COMPAT_ERR_H
+#define COMPAT_ERR_H
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#define warn(...) do { fprintf(stderr, __VA_ARGS__); fprintf(stderr, ": %s\n", strerror(errno)); } while (0)
+#define warnx(...) do { fprintf(stderr, __VA_ARGS__); fprintf(stderr, "\n"); } while (0)
+#define err(eval, ...) do { fprintf(stderr, __VA_ARGS__); fprintf(stderr, ": %s\n", strerror(errno)); exit(eval); } while (0)
+#define errx(eval, ...) do { fprintf(stderr, __VA_ARGS__); fprintf(stderr, "\n"); exit(eval); } while (0)
+
+#endif