forked from mirrors/tftp-hpa-google
134 lines
3.6 KiB
Text
134 lines
3.6 KiB
Text
dnl --------------------------------------------------------------------------
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dnl PA_ADD_CFLAGS()
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dnl
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dnl Attempt to add the given option to CFLAGS, if it doesn't break compilation
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dnl --------------------------------------------------------------------------
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AC_DEFUN(PA_ADD_CFLAGS,
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[AC_MSG_CHECKING([if $CC accepts $1])
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pa_add_cflags__old_cflags="$CFLAGS"
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CFLAGS="$CFLAGS $1"
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AC_TRY_COMPILE([#include <stdio.h>],
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[printf("Hello, World!\n");],
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AC_MSG_RESULT([yes]),
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AC_MSG_RESULT([no])
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CFLAGS="$pa_add_cflags__old_cflags")])
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dnl --------------------------------------------------------------------------
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dnl PA_SIGSETJMP
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dnl
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dnl Do we have sigsetjmp/siglongjmp? (AC_CHECK_FUNCS doesn't seem to work
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dnl for these particular functions.)
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dnl --------------------------------------------------------------------------
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AC_DEFUN(PA_SIGSETJMP,
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[AC_MSG_CHECKING([for sigsetjmp])
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AC_TRY_LINK(
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[#include <setjmp.h>],
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[sigjmp_buf buf;
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sigsetjmp(buf,1);
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siglongjmp(buf,2);],
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AC_MSG_RESULT([yes])
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$1,
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AC_MSG_RESULT([no])
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$2)])
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dnl --------------------------------------------------------------------------
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dnl PA_MSGHDR_MSG_CONTROL
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dnl
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dnl Does struct msghdr have the msg_control field?
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dnl --------------------------------------------------------------------------
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AC_DEFUN(PA_MSGHDR_MSG_CONTROL,
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[AC_MSG_CHECKING([for msg_control in struct msghdr])
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AC_TRY_COMPILE(
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[
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#include <sys/types.h>
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#include <sys/socket.h>
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],
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[
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struct msghdr msg;
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void *p = (void *) &msg.msg_control;
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],
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[
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AC_DEFINE(HAVE_MSGHDR_MSG_CONTROL)
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AC_MSG_RESULT([yes])
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],
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[
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AC_MSG_RESULT([no])
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])])
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dnl ------------------------------------------------------------------------
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dnl PA_STRUCT_IN_PKTINFO
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dnl
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dnl Look for definition of struct in_pktinfo. Some versions of glibc
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dnl lack struct in_pktinfo; if so we need to include the definition
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dnl ourselves -- but we only want to do that if absolutely necessary!
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dnl ------------------------------------------------------------------------
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AC_DEFUN(PA_STRUCT_IN_PKTINFO,
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[AC_MSG_CHECKING([for definition of struct in_pktinfo])
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AC_TRY_COMPILE(
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[
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include <stdlib.h>
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#include <sys/uio.h>
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],
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[
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struct in_pktinfo pktinfo;
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int foo = sizeof(struct in_pktinfo);
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void *quux = (void *)(&pktinfo.ipi_addr);
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],
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[
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AC_DEFINE(HAVE_STRUCT_IN_PKTINFO)
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AC_MSG_RESULT([yes])
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],
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[
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AC_MSG_RESULT([no])
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])])
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dnl --------------------------------------------------------------------------
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dnl PA_HAVE_TCPWRAPPERS
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dnl
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dnl Do we have the tcpwrappers -lwrap? This can't be done using AC_CHECK_LIBS
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dnl due to the need to provide "allow_severity" and "deny_severity" variables
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dnl --------------------------------------------------------------------------
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AC_DEFUN(PA_HAVE_TCPWRAPPERS,
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[AC_CHECK_LIB([wrap], [main])
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AC_MSG_CHECKING([for tcpwrappers])
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AC_TRY_LINK(
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[
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#include <tcpd.h>
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int allow_severity = 0;
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int deny_severity = 0;
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],
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[
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hosts_ctl("sample_daemon", STRING_UNKNOWN, STRING_UNKNOWN, STRING_UNKNOWN);
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],
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[
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AC_DEFINE(HAVE_TCPWRAPPERS)
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AC_MSG_RESULT([yes])
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],
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[
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AC_MSG_RESULT([no])
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])])
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dnl ------------------------------------------------------------------------
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dnl PA_WITH_BOOL
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dnl
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dnl PA_WITH_BOOL(option, default, help, enable, disable)
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dnl
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dnl Provides a more convenient way to specify --with-option and
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dnl --without-option, with a default. default should be either 0 or 1.
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dnl ------------------------------------------------------------------------
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AC_DEFUN(PA_WITH_BOOL,
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[AC_ARG_WITH([$1], [$3],
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if test ["$withval"] != no; then
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[$4]
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else
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[$5]
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fi,
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if test [$2] -ne 0; then
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[$4]
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else
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[$5]
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fi)])
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