# HG changeset patch
# User Daniel O'Connor <darius@dons.net.au>
# Date 1616988295 -37800
# Node ID b9ec45077bff257225e09acd3249be7225eae229
# Parent  a55e39064a71be36f210fbe2075d3e55a83781c9
Use MAKE_C_IDENTIFIER since it's available.
Add comment about where we got the magic from.
Add _end symbol.

diff -r a55e39064a71 -r b9ec45077bff local.cmake
--- a/local.cmake	Mon Mar 29 13:48:34 2021 +1030
+++ b/local.cmake	Mon Mar 29 13:54:55 2021 +1030
@@ -17,12 +17,14 @@
     # Get directory name of source file
     # ld will name the symbol based on the full path so we have to mangle it
     get_filename_component(BIN_SRC_DIR ${FILENAME} DIRECTORY)
-    string(REPLACE "/" "_" SRC_DIRNAME_MANGLED ${BIN_SRC_DIR})
+    string(MAKE_C_IDENTIFIER ${BIN_SRC_DIR} SRC_DIRNAME_MANGLED)
     #message("SRC_DIRNAME_MANGLED ${SRC_DIRNAME_MANGLED}")
 
+    # http://stupefydeveloper.blogspot.com/2008/08/cc-embed-binary-data-into-elf.html
     add_custom_command(OUTPUT ${ELFNAME}
       COMMAND arm-none-eabi-ld -r -b binary -o ${ELFNAME}
  --defsym=${BIN_SYMNAME}_start=_binary_${SRC_DIRNAME_MANGLED}_${BIN_SYMNAME}_start
+ --defsym=${BIN_SYMNAME}_end=_binary_${SRC_DIRNAME_MANGLED}_${BIN_SYMNAME}_end
  --defsym=${BIN_SYMNAME}_size=_binary_${SRC_DIRNAME_MANGLED}_${BIN_SYMNAME}_size
  ${FILENAME}
         DEPENDS ${FILENAME})