1 files changed, 85 insertions, 0 deletions
diff --git a/ConfigureChecks.cmake b/ConfigureChecks.cmake
new file mode 100644
index 0000000..2678958
--- /dev/null
+++ b/ConfigureChecks.cmake
@@ -0,0 +1,85 @@
+###########################################
+#                                         #
+#  Improvements and feedback are welcome  #
+#                                         #
+#  This file is released under GPL >= 3   #
+#                                         #
+###########################################
+
+# required stuff
+find_package( TQt )
+find_package( TDE )
+
+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 OpenSSL
+
+find_package( OpenSSL )
+
+if( NOT OPENSSL_FOUND )
+    check_include_file( openssl/err.h HAVE_OPENSSL_H )
+    check_library_exists( ssl OPENSSL_init_ssl "" HAVE_LIBSSL_11 )
+    check_library_exists( crypto EVP_EncryptInit_ex "" HAVE_LIBCRYPTO )
+
+    if( NOT HAVE_LIBSSL_11 )
+        check_library_exists( ssl SSL_library_init "" HAVE_LIBSSL )
+    endif()
+
+    if( HAVE_OPENSSL_H AND HAVE_LIBCRYPTO AND (HAVE_LIBSSL_11 OR HAVE_LIBSSL)  )
+        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}" )
+        set( OPENSSL_LIBRARIES "ssl;crypto" CACHE INTERNAL "ssl and crypto libs" FORCE )
+    endif()
+endif( NOT OPENSSL_FOUND )
+
+if( NOT OPENSSL_FOUND )
+    tde_message_fatal( "OpenSSL support is required but OpenSSL was not found on your system" )
+ else()
+    check_include_file( "openssl/aes.h"      HAVE_OPENSSL_AES_H )
+    check_include_file( "openssl/blowfish.h" HAVE_OPENSSL_BLOWFISH_H )
+endif( NOT OPENSSL_FOUND )
+
+
+##### check for zlib
+
+find_package( ZLIB )
+
+if( ZLIB_FOUND )
+    set( HAVE_LIBZ 1 )
+endif( ZLIB_FOUND )
+
+
+##### check for functions
+
+check_function_exists( poll   HAVE_POLL )
+check_function_exists( select HAVE_SELECT )
+
+
+##### check headers
+
+check_include_file(  "sys/time.h"        HAVE_SYS_TIME_H )
+check_include_files( "sys/time.h;time.h" TIME_WITH_SYS_TIME )
+check_include_files( "sys/poll.h"        HAVE_SYS_POLL_H )
+
+
+##### check for symbols
+
+check_symbol_exists( gethostbyname "netdb.h" HAVE_GETHOSTBYNAME )
+check_symbol_exists( gethostbyaddr "netdb.h" HAVE_GETHOSTBYADDR )