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AC_DEFUN([ACX_OPENSSL],[
AC_ARG_WITH(openssl,
AC_HELP_STRING([--with-openssl=PATH],[Specify prefix of path of OpenSSL]),
[
OPENSSL_INCLUDES="-I$withval/include"
OPENSSL_LIBDIRS="-L$withval/lib"
],
[
OPENSSL_INCLUDES=""
OPENSSL_LIBDIRS=""
])
AC_MSG_CHECKING(what are the OpenSSL includes)
AC_MSG_RESULT($OPENSSL_INCLUDES)
AC_MSG_CHECKING(what are the OpenSSL libs)
OPENSSL_LIBS="$OPENSSL_LIBDIRS -lcrypto"
AC_MSG_RESULT($OPENSSL_LIBS)
tmp_CPPFLAGS=$CPPFLAGS
tmp_LIBS=$LIBS
CPPFLAGS="$CPPFLAGS $OPENSSL_INCLUDES"
LIBS="$OPENSSL_LIBS $LIBS"
AC_CHECK_HEADERS([openssl/ssl.h],,[AC_MSG_ERROR([Can't find OpenSSL headers])])
AC_CHECK_LIB(crypto, BN_new,,[AC_MSG_ERROR([Can't find OpenSSL library])])
AC_MSG_CHECKING([for OpenSSL version])
CHECK_OPENSSL_VERSION=m4_format(0x%02x%02x%02x000L, $1, $2, $3)
AC_LANG_PUSH([C])
AC_CACHE_VAL([acx_cv_lib_openssl_sufficient],[
acx_cv_lib_openssl_sufficient=no
AC_COMPILE_IFELSE([
AC_LANG_SOURCE([[
#include <openssl/ssl.h>
#include <openssl/opensslv.h>
int main()
{
#ifndef OPENSSL_VERSION_NUMBER
#error "OpenSSL version undefined"
#endif
#if OPENSSL_VERSION_NUMBER >= $CHECK_OPENSSL_VERSION
return 0;
#else
#error "OpenSSL too old"
#endif
}
]])
],[
AC_MSG_RESULT([>= $1.$2.$3])
acx_cv_lib_openssl_sufficient=yes
],[
AC_MSG_RESULT([< $1.$2.$3])
AC_MSG_ERROR([OpenSSL library too old ($1.$2.$3 or later required)])
])
])
AC_LANG_POP([C])
CPPFLAGS=$tmp_CPPFLAGS
LIBS=$tmp_LIBS
AC_SUBST(OPENSSL_INCLUDES)
AC_SUBST(OPENSSL_LIBS)
])
|
