1 files changed, 111 insertions, 0 deletions
diff --git a/portable/system.h b/portable/system.h
new file mode 100644
index 0000000..1408ba7
--- /dev/null
+++ b/portable/system.h
@@ -0,0 +1,111 @@
+/* $Id$
+ *
+ * Declarations of routines and variables in the C library.  Including this
+ * file is the equivalent of including all of the following headers, portably:
+ *
+ *     #include <sys/types.h>
+ *     #include <stdarg.h>
+ *     #include <stdbool.h>
+ *     #include <stdio.h>
+ *     #include <stdlib.h>
+ *     #include <stddef.h>
+ *     #include <stdint.h>
+ *     #include <string.h>
+ *     #include <unistd.h>
+ *
+ * Missing functions are provided via #define or prototyped if available.
+ * Also provides some standard #defines.
+ *
+ * Written by Russ Allbery <rra@stanford.edu>
+ * This work is hereby placed in the public domain by its author.
+ */
+
+#ifndef PORTABLE_SYSTEM_H
+#define PORTABLE_SYSTEM_H 1
+
+/* Make sure we have our configuration information. */
+#include <config.h>
+
+/* BEGIN_DECL and __attribute__. */
+#include <portable/macros.h>
+
+/* A set of standard ANSI C headers.  We don't care about pre-ANSI systems. */
+#include <stdarg.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <string.h>
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#endif
+#if HAVE_STDINT_H
+# include <stdint.h>
+#endif
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+/* SCO OpenServer gets int32_t from here. */
+#if HAVE_SYS_BITYPES_H
+# include <sys/bitypes.h>
+#endif
+
+/* Get the bool type. */
+#include <portable/stdbool.h>
+
+BEGIN_DECLS
+
+/*
+ * Provide prototypes for functions not declared in system headers.  Use the
+ * HAVE_DECL macros for those functions that may be prototyped but
+ * implemented incorrectly or implemented without a prototype.
+ */
+#if !HAVE_ASPRINTF
+extern int asprintf(char **, const char *, ...);
+extern int vasprintf(char **, const char *, va_list);
+#endif
+#if !HAVE_DECL_SNPRINTF
+extern int snprintf(char *, size_t, const char *, ...)
+    __attribute__((__format__(printf, 3, 4)));
+#endif
+#if !HAVE_DECL_VSNPRINTF
+extern int vsnprintf(char *, size_t, const char *, va_list);
+#endif
+#if !HAVE_STRLCAT
+extern size_t strlcat(char *, const char *, size_t);
+#endif
+#if !HAVE_STRLCPY
+extern size_t strlcpy(char *, const char *, size_t);
+#endif
+
+END_DECLS
+
+/* Windows provides snprintf under a different name. */
+#ifdef _WIN32
+# define snprintf _snprintf
+#endif
+
+/*
+ * POSIX requires that these be defined in <unistd.h>.  If one of them has
+ * been defined, all the rest almost certainly have.
+ */
+#ifndef STDIN_FILENO
+# define STDIN_FILENO   0
+# define STDOUT_FILENO  1
+# define STDERR_FILENO  2
+#endif
+
+/*
+ * C99 requires va_copy.  Older versions of GCC provide __va_copy.  Per the
+ * Autoconf manual, memcpy is a generally portable fallback.
+ */
+#ifndef va_copy
+# ifdef __va_copy
+#  define va_copy(d, s)         __va_copy((d), (s))
+# else
+#  define va_copy(d, s)         memcpy(&(d), &(s), sizeof(va_list))
+# endif
+#endif
+
+#endif /* !PORTABLE_SYSTEM_H */