configure.in

基于网络编程的例子

dnl Autoconfigure script for bogusapp
dnl Kurt Wall <[e-mail]>
dnl
dnl Process this file with `autoconf' to produce a `configure' script
AC_INIT(bogusapp.c)
AC_CONFIG_HEADER(config.h)

test -z "$LDFLAGS" && LDFLAGS="-I/usr/include" AC_SUBST(LDFLAGS)

dnl Tests for UNIX variants
dnl
AC_CANONICAL_HOST

dnl Tests for programs
dnl
AC_PROG_CC
AC_PROG_LEX
AC_PROG_AWK
AC_PROG_YACC
AC_CHECK_PROG(SHELL, bash, /bin/bash, /bin/sh)

dnl Tests for libraries
dnl
AC_CHECK_LIB(socket, socket)
AC_CHECK_LIB(resolv, res_init, [echo "res_init() not in libresolv"],
            [echo "res_init() found in libresolv"])

dnl Tests for header files
dnl
AC_CHECK_HEADER(killer.h)
AC_CHECK_HEADERS([resolv.h termio.h curses.h sys/time.h fcntl.h \
sys/fcntl.h memory.h])
AC_DECL_SYS_SIGLIST
AC_HEADER_STDC

dnl Tests for typedefs
dnl
AC_TYPE_GETGROUPS
AC_TYPE_SIZE_T
AC_TYPE_PID_T

dnl Tests for structures
AC_HEADER_TIME
AC_STRUCT_TIMEZONE

dnl Tests of compiler behavior
dnl
AC_C_BIGENDIAN
AC_C_INLINE
AC_CHECK_SIZEOF(int, 32)

dnl Tests for library functions
dnl
AC_FUNC_GETLOADAVG
AC_FUNC_MMAP
AC_FUNC_UTIME_NULL
AC_FUNC_VFORK

dnl Tests of system services
dnl
AC_SYS_INTERPRETER
AC_PATH_X
AC_SYS_RESTARTABLE_SYSCALLS

dnl Tests in this section exercise a few of `autoconf''s generic macros
dnl
dnl First, let's see if we have a usable void pointer type
dnl
AC_MSG_CHECKING(for a usable void pointer type)
AC_TRY_COMPILE([],
	[char *ptr;
	 void *xmalloc();
	 ptr = (char *) xmalloc(1);
    ],
	[AC_DEFINE(HAVE_VOID_POINTER) AC_MSG_RESULT(usable void pointer)],
	AC_MSG_RESULT(no usable void pointer type))
dnl 
dnl Now, let's exercise the preprocessor
dnl
AC_TRY_CPP(math.h, echo 'found math.h', echo 'no math.h - deep doo doo!')

dnl
dnl Next, we test the linker
dnl
AC_TRY_LINK([#ifndef HAVE_UNISTD_H
             #include <signal.h>
			 #endif],
			[char *ret = *(sys_siglist + 1);],
			[AC_DEFINE(HAVE_SYS_SIGLIST), AC_MSG_RESULT(got sys_siglist)],
			[AC_MSG_RESULT(no sys_siglist)])
dnl
dnl Finally, set a default value for a ridiculous type
dnl
AC_CHECK_TYPE(short_short_t, unsigned short)

dnl Okay, we're done.  Create the output files and get out of here
dnl
AC_OUTPUT(Makefile)