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-rw-r--r--m4/ax_check_capsicum.m485
1 files changed, 0 insertions, 85 deletions
diff --git a/m4/ax_check_capsicum.m4 b/m4/ax_check_capsicum.m4
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--- a/m4/ax_check_capsicum.m4
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-# -*- Autoconf -*-
-
-# SYNOPSIS
-#
-# AX_CHECK_CAPSICUM([ACTION-IF-FOUND[, ACTION-IF-NOT-FOUND]])
-#
-# DESCRIPTION
-#
-# This macro searches for an installed Capsicum header and library,
-# and if found:
-# - AC_DEFINE([HAVE_CAPSICUM]) is called.
-# - AC_DEFINE([HAVE_SYS_CAPSICUM_H]) is called if <sys/capsicum.h>
-# is present (otherwise <sys/capability.h> must be used).
-# - CAPSICUM_LIB is set to the -l option needed to link Capsicum support,
-# and AC_SUBST([CAPSICUM_LIB]) is called.
-# - The shell commands in ACTION-IF-FOUND are run. The default
-# ACTION-IF-FOUND prepends ${CAPSICUM_LIB} into LIBS. If you don't
-# want to modify LIBS and don't need to run any other commands either,
-# use a colon as ACTION-IF-FOUND.
-#
-# If Capsicum support isn't found:
-# - The shell commands in ACTION-IF-NOT-FOUND are run. The default
-# ACTION-IF-NOT-FOUND calls AC_MSG_WARN to print a warning that
-# Capsicum support wasn't found.
-#
-# You should use autoheader to include a definition for the symbols above
-# in a config.h file.
-#
-# Sample usage in a C/C++ source is as follows:
-#
-# #ifdef HAVE_CAPSICUM
-# # ifdef HAVE_SYS_CAPSICUM_H
-# # include <sys/capsicum.h>
-# # else
-# # include <sys/capability.h>
-# # endif
-# #endif /* HAVE_CAPSICUM */
-#
-# LICENSE
-#
-# Copyright (c) 2014 Google Inc.
-# Copyright (c) 2015 Lasse Collin <lasse.collin@tukaani.org>
-#
-# Copying and distribution of this file, with or without modification,
-# are permitted in any medium without royalty provided the copyright
-# notice and this notice are preserved. This file is offered as-is,
-# without any warranty.
-
-#serial 2
-
-AC_DEFUN([AX_CHECK_CAPSICUM], [
-# On FreeBSD >= 11.x and Linux, Capsicum is uses <sys/capsicum.h>.
-# If this header is found, it is assumed to be the right one.
-capsicum_header_found=no
-AC_CHECK_HEADERS([sys/capsicum.h], [capsicum_header_found=yes])
-if test "$capsicum_header_found" = no ; then
- # On FreeBSD 10.x Capsicum uses <sys/capability.h>. Such a header exists
- # on Linux too but it describes POSIX.1e capabilities. Look for the
- # declaration of cap_rights_limit to check if <sys/capability.h> is
- # a Capsicum header.
- AC_CHECK_DECL([cap_rights_limit], [capsicum_header_found=yes], [],
- [#include <sys/capability.h>])
-fi
-
-capsicum_lib_found=no
-CAPSICUM_LIB=
-if test "$capsicum_header_found" = yes ; then
- AC_LANG_PUSH([C])
- # FreeBSD >= 10.x has Capsicum functions in libc.
- AC_LINK_IFELSE([AC_LANG_CALL([], [cap_rights_limit])],
- [capsicum_lib_found=yes], [])
- # Linux has Capsicum functions in libcaprights.
- AC_CHECK_LIB([caprights], [cap_rights_limit],
- [CAPSICUM_LIB=-lcaprights
- capsicum_lib_found=yes], [])
- AC_LANG_POP([C])
-fi
-AC_SUBST([CAPSICUM_LIB])
-
-if test "$capsicum_lib_found" = yes ; then
- AC_DEFINE([HAVE_CAPSICUM], [1], [Define to 1 if Capsicum is available.])
- m4_default([$1], [LIBS="${CAPSICUM_LIB} $LIBS"])
-else
- m4_default([$2], [AC_MSG_WARN([Capsicum support not found])])
-fi])