Use libbsd when needed

Author: grayed

CMakeLists.txt

@@ -4,10 +4,21 @@ project(tlc LANGUAGES C)
 
 set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/cmake)
 
-# find_path(HAVE_SYS_SYSMACROS_H sys/sysmacros.h)
-# if (HAVE_SYS_SYSMACROS_H)
-#     add_compile_definitions(HAVE_SYS_SYSMACROS_H)
-# endif()
+if (CMAKE_BUILD_TYPE STREQUAL Debug)
+	add_definitions(-DDEBUG)
+endif()
 
 add_executable(tlc tlc.c)
+
+if (APPLE OR CMAKE_SYSTEM_NAME MATCHES ".*BSD.*")
+	message(STATUS "It looks you're running BSD system and do not need libbsd")
+else()
+	find_package(BSD REQUIRED)
+	list(APPEND BSD_DEFINITIONS -DLIBBSD_OVERLAY)
+	list(APPEND BSD_DEFINITIONS -D_BSD_SOURCE=1 -D_DEFAULT_SOURCE=1 -D_GNU_SOURCE=1 -D_XOPEN_SOURCE=700)
+	target_compile_definitions(tlc PRIVATE ${BSD_DEFINITIONS})
+	target_include_directories(tlc BEFORE PRIVATE ${BSD_INCLUDE_DIRS})
+	target_link_libraries(tlc ${BSD_LIBRARIES})
+endif()
+
 install(TARGETS tlc RUNTIME DESTINATION bin)

cmake/FindBSD.cmake

@@ -0,0 +1,24 @@
+# copied from Swift-2, Apache 2.0 licensed
+# author: https://github.com/stormbrew
+# source: https://github.com/hsavit1/swift-2/blob/master/cmake/modules/FindBSD.cmake
+
+# Find libbsd
+
+find_package(PkgConfig)
+pkg_check_modules(PC_BSD QUIET bsd)
+set(BSD_DEFINITIONS ${PC_BSD_CFLAGS_OTHER})
+
+find_path(BSD_INCLUDE_DIR bsd/stdlib.h
+    HINTS ${PC_BSD_INCLUDEDIR} ${PC_BSD_INCLUDE_DIRS})
+set(BSD_INCLUDE_DIRS ${BSD_INCLUDE_DIR}/bsd)
+
+find_library(BSD_LIBRARY NAMES bsd
+  HINTS ${PC_BSD_LIBDIR} ${PC_BSD_LIBRARY_DIRS})
+set(BSD_LIBRARIES ${BSD_LIBRARY})
+
+set(BSD_REQUIRED BSD_LIBRARY BSD_INCLUDE_DIR)
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(BSD DEFAULT_MSG ${BSD_REQUIRED})
+
+mark_as_advanced(${BSD_REQUIRED})

compat.h

@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 1982, 1986, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ * Copyright (c) 2021 Vadim Zhukov <zhuk@openbsd.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	@(#)time.h	8.2 (Berkeley) 7/10/94
+ */
+
+#ifndef TLC_COMPAT_H
+#define TLC_COMPAT_H
+
+/* Operations on timespecs. */
+
+#ifndef timespecclear
+#define	timespecclear(tsp)		(tsp)->tv_sec = (tsp)->tv_nsec = 0
+#endif
+
+#ifndef timespecisset
+#define	timespecisset(tsp)		((tsp)->tv_sec || (tsp)->tv_nsec)
+#endif
+
+#ifndef timespecisvalid
+#define	timespecisvalid(tsp)						\
+	((tsp)->tv_nsec >= 0 && (tsp)->tv_nsec < 1000000000L)
+#endif
+
+#ifndef timespeccmp
+#define	timespeccmp(tsp, usp, cmp)					\
+	(((tsp)->tv_sec == (usp)->tv_sec) ?				\
+	    ((tsp)->tv_nsec cmp (usp)->tv_nsec) :			\
+	    ((tsp)->tv_sec cmp (usp)->tv_sec))
+#endif
+
+#ifndef timespecadd
+#define	timespecadd(tsp, usp, vsp)					\
+	do {								\
+		(vsp)->tv_sec = (tsp)->tv_sec + (usp)->tv_sec;		\
+		(vsp)->tv_nsec = (tsp)->tv_nsec + (usp)->tv_nsec;	\
+		if ((vsp)->tv_nsec >= 1000000000L) {			\
+			(vsp)->tv_sec++;				\
+			(vsp)->tv_nsec -= 1000000000L;			\
+		}							\
+	} while (0)
+#endif
+
+#ifndef timespecsub
+#define	timespecsub(tsp, usp, vsp)					\
+	do {								\
+		(vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec;		\
+		(vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec;	\
+		if ((vsp)->tv_nsec < 0) {				\
+			(vsp)->tv_sec--;				\
+			(vsp)->tv_nsec += 1000000000L;			\
+		}							\
+	} while (0)
+#endif
+
+#endif

tlc.c

@@ -29,9 +29,7 @@
 #include <time.h>
 #include <unistd.h>
 
-#ifndef __dead
-#define __dead
-#endif
+#include "compat.h"
 
 // user-defined parameters
 bool		 debug, use_format, passthrough;