Mercurial > gnulib
view m4/af_alg.m4 @ 40196:e63f5d3edab5
relocatable-prog: Update documentation.
* doc/relocatable-maint.texi (Supporting Relocation): Update to match
the recent changes.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 24 Feb 2019 01:49:15 +0100 |
parents | b06060465f09 |
children |
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# af_alg.m4 serial 4 dnl Copyright 2018-2019 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Matteo Croce. AC_DEFUN_ONCE([gl_AF_ALG], [ AC_REQUIRE([gl_HEADER_SYS_SOCKET]) AC_REQUIRE([AC_C_INLINE]) dnl Check whether linux/if_alg.h has needed features. AC_CACHE_CHECK([whether linux/if_alg.h has struct sockaddr_alg.], [gl_cv_header_linux_if_alg_salg], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include <sys/socket.h> #include <linux/if_alg.h> struct sockaddr_alg salg = { .salg_family = AF_ALG, .salg_type = "hash", .salg_name = "sha1", };]])], [gl_cv_header_linux_if_alg_salg=yes], [gl_cv_header_linux_if_alg_salg=no])]) if test "$gl_cv_header_linux_if_alg_salg" = yes; then AC_DEFINE([HAVE_LINUX_IF_ALG_H], [1], [Define to 1 if you have 'struct sockaddr_alg' defined.]) fi dnl The default is to not use AF_ALG if available, dnl as it's system dependent as to whether the kernel dnl routines are faster than libcrypto for example. use_af_alg=no AC_ARG_WITH([linux-crypto], [AS_HELP_STRING([[--with-linux-crypto]], [use Linux kernel cryptographic API (if available)])], [use_af_alg=$withval], [use_af_alg=no]) dnl We cannot use it if it is not available. if test "$gl_cv_header_linux_if_alg_salg" != yes; then if test "$use_af_alg" != no; then AC_MSG_WARN([Linux kernel cryptographic API not found]) fi use_af_alg=no fi if test "$use_af_alg" != no; then USE_AF_ALG=1 else USE_AF_ALG=0 fi AC_DEFINE_UNQUOTED([USE_LINUX_CRYPTO_API], [$USE_AF_ALG], [Define to 1 if you want to use the Linux kernel cryptographic API.]) ])