initial commit

cmake/libraries/libtasn.cmake

@@ -0,0 +1,30 @@
+if(PROJECT_ENABLE_LIBTASN)
+  if(PROJECT_BUILD)
+    add_definitions(-DPROJECT_ENABLE_LIBTASN)
+
+    find_library(libtasn1_LIBRARIES NAMES libtasn1.a)
+
+    link_libraries(${libtasn1_LIBRARIES})
+  elseif(NOT PROJECT_IS_MINGW)
+    ExternalProject_Add(libtasn1_project
+      PREFIX external
+      URL ${PROJECT_3RD_PARTY_DIR}/libtasn1-${LIBTASN_VERSION}.tar.gz
+      URL_HASH SHA256=${LIBTASN_HASH}
+      BUILD_IN_SOURCE 1
+      LIST_SEPARATOR |
+      CONFIGURE_COMMAND ./configure 
+        --disable-doc
+        --enable-shared=no
+        --enable-static=yes
+        --prefix=${PROJECT_EXTERNAL_BUILD_ROOT}
+      BUILD_COMMAND make -j1 
+      INSTALL_COMMAND make install
+    )
+
+    list(APPEND PROJECT_DEPENDENCIES libtasn1_project)
+
+    if (PROJECT_ENABLE_OPENSSL)
+      add_dependencies(libtasn1_project openssl_project)
+    endif()
+  endif()
+endif()