Add E1AP Grammar and build ASN.1 lib at build time

CMakeLists.txt

@@ -3194,3 +3194,5 @@ ADD_CUSTOM_TARGET(oarf
 
 include (${OPENAIR_DIR}/common/utils/telnetsrv/telnetsrv_CMakeLists.txt)
 include(${OPENAIR1_DIR}/PHY/CODING/nrLDPC_decoder/nrLDPC_tools/CMakeLists.txt)
+
+add_subdirectory(openair2)

openair2/CMakeLists.txt

+add_subdirectory(E1AP)

openair2/E1AP/CMakeLists.txt

+add_subdirectory(MESSAGES)

openair2/E1AP/MESSAGES/CMakeLists.txt

+set(E1AP_VERSION 16 78 0)
+make_version(E1AP_cc ${E1AP_VERSION})
+#add_definitions(-DE1AP_VERSION=${E1AP_cc})
+string(REPLACE ";" "." E1AP_RELEASE "${E1AP_VERSION}")
+
+if(E1AP_RELEASE VERSION_EQUAL "16.78.0")
+  include(ASN.1/38463-g80.R16.78.0.cmake)
+else()
+  message(FATAL_ERROR "unknown E1AP_RELEASE ${E1AP_RELEASE}")
+endif()
+
+add_custom_command(OUTPUT ${e1ap_source} ${e1ap_headers}
+  COMMAND ASN1C_PREFIX=E1AP_ asn1c -gen-PER -no-gen-OER -fcompound-names -no-gen-example -findirect-choice -fno-include-deps -D ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/${E1AP_GRAMMAR}
+  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${E1AP_GRAMMAR}
+  COMMENT "Generating E1AP source files from ${CMAKE_CURRENT_SOURCE_DIR}/${E1AP_GRAMMAR}"
+)
+
+add_library(asn1_e1ap ${e1ap_source})
+target_include_directories(asn1_e1ap PUBLIC "${CMAKE_CURRENT_BINARY_DIR}")
+target_compile_options(asn1_e1ap PRIVATE -DASN_DISABLE_OER_SUPPORT -w)