1 files changed, 66 insertions, 0 deletions
diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
new file mode 100644
index 0000000..d2ac512
--- /dev/null
+++ b/ConfigureChecks.cmake
@@ -0,0 +1,66 @@
+###########################################
+#                                         #
+#  Improvements and feedback are welcome  #
+#                                         #
+#  This file is released under GPL >= 3   #
+#                                         #
+###########################################
+
+# required stuff
+
+tde_setup_architecture_flags( )
+
+include(TestBigEndian)
+test_big_endian(WORDS_BIGENDIAN)
+
+tde_setup_largefiles( )
+
+
+##### check for gcc visibility support
+
+if( WITH_GCC_VISIBILITY )
+  tde_setup_gcc_visibility( )
+endif( WITH_GCC_VISIBILITY )
+
+
+##### check for gnutls
+
+pkg_search_module( GNUTLS gnutls )
+if( NOT GNUTLS_FOUND )
+  tde_message_fatal( "GNUTLS is required but was not found on your system" )
+endif( NOT GNUTLS_FOUND )
+
+
+##### check for OpenSSL
+
+pkg_search_module( SSL openssl )
+if( NOT SSL_FOUND )
+   check_include_file( openssl/ssl.h HAVE_OPENSSL_H )
+   check_library_exists( ssl OPENSSL_init_ssl "" HAVE_LIBSSL_11 )
+   if( NOT HAVE_LIBSSL_11 )
+      check_library_exists( ssl SSL_library_init "" HAVE_LIBSSL )
+   endif( )
+   check_library_exists( crypto EVP_EncryptInit_ex "" HAVE_LIBCRYPTO )
+   if( HAVE_OPENSSL_H AND (HAVE_LIBSSL_11 OR HAVEL_LIBSSL) AND HAVE_LIBCRYPTO )
+      set( SSL_FOUND 1 CACHE INTERNAL "" FORCE )
+      find_file( OPENSSLV_H openssl/opensslv.h )
+      file( STRINGS "${OPENSSLV_H}" SSL_VERSION REGEX "#[ \t]*define[ \t]*OPENSSL_VERSION_TEXT" )
+      string( REGEX REPLACE "# *define[ \t]*OPENSSL_VERSION_TEXT[ \t]*\"[^0-9 ]* *([^ ]*).*" "\\1"
+              SSL_VERSION "${SSL_VERSION}" )
+      set( SSL_VERSION "${SSL_VERSION}" CACHE INTERNAL "" FORCE )
+      message( STATUS "Found OpenSSL: version ${SSL_VERSION}" )
+   endif( HAVE_OPENSSL_H AND (HAVE_LIBSSL_11 OR HAVEL_LIBSSL) AND HAVE_LIBCRYPTO )
+endif( NOT SSL_FOUND )
+if( NOT SSL_FOUND )
+  tde_message_fatal( "SSL support is required but was not found on your system" )
+endif( NOT SSL_FOUND )
+
+
+##### check for pkcs11-helper
+
+pkg_search_module( LIBPKCS11-HELPER libpkcs11-helper-1 )
+if( NOT LIBPKCS11-HELPER_FOUND )
+  tde_message_fatal( "libpkcs11-helper-1 is required but was not found on your system" )
+endif( NOT LIBPKCS11-HELPER_FOUND )
+
+