Generate and build S1AP ASN.1 during build time

openair3/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(S1AP)

openair3/S1AP/CMakeLists.txt

@@ -0,0 +1 @@
+add_subdirectory(MESSAGES)

openair3/S1AP/MESSAGES/CMakeLists.txt

@@ -0,0 +1,20 @@
+set(S1AP_VERSION 15 6 0)
+make_version(S1AP_cc ${S1AP_VERSION})
+#add_definitions(-DS1AP_VERSION=${S1AP_cc})
+string(REPLACE ";" "." S1AP_RELEASE "${S1AP_VERSION}")
+
+if(S1AP_RELEASE VERSION_EQUAL "15.6.0")
+  include(ASN1/R15/s1ap-15.6.0.cmake)
+else()
+  message(FATAL_ERROR "unknown S1AP_RELEASE ${S1AP_RELEASE}")
+endif()
+
+add_custom_command(OUTPUT ${s1ap_source} ${s1ap_headers}
+  COMMAND ASN1C_PREFIX=S1AP_ asn1c -gen-PER -no-gen-OER -fcompound-names -no-gen-example -fno-include-deps -D ${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/${S1AP_GRAMMAR}
+  DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/${S1AP_GRAMMAR}
+  COMMENT "Generating S1AP source files from ${CMAKE_CURRENT_SOURCE_DIR}/${S1AP_GRAMMAR}"
+)
+
+add_library(asn1_s1ap ${s1ap_source})
+target_include_directories(asn1_s1ap PUBLIC "${CMAKE_CURRENT_BINARY_DIR}")
+target_compile_options(asn1_s1ap PRIVATE -DASN_DISABLE_OER_SUPPORT -w)