InitialHEADmaster

1 files changed, 123 insertions, 0 deletions

diff --git a/cmake/utils.cmake b/cmake/utils.cmake
new file mode 100644
index 0000000..17fb235
--- /dev/null
+++ b/cmake/utils.cmake
@@ -0,0 +1,123 @@
+# Get all subdirectories under ${current_dir} and store them in ${result} variable
+macro(subdirlist result current_dir)
+    file(GLOB children "${current_dir}/*")
+    set(dirlist "")
+
+    foreach(child ${children})
+        if (IS_DIRECTORY "${child}")
+            list(APPEND dirlist "${child}")
+        endif()
+    endforeach()
+
+    set(${result} ${dirlist})
+endmacro()
+
+# Prepend ${CMAKE_CURRENT_SOURCE_DIR} to a ${directory} name and save it in PARENT_SCOPE ${variable}
+macro(prepend_cur_dir variable directory)
+    set(${variable} "${CMAKE_CURRENT_SOURCE_DIR}/${directory}")
+endmacro()
+
+# Add custom command to print firmware size in Berkeley format
+function(firmware_size target)
+    add_custom_command(TARGET ${target} POST_BUILD
+        COMMAND ${CMAKE_SIZE_UTIL} -B "$<TARGET_FILE:${target}>"
+    )
+endfunction()
+
+# Add a command to generate firmware in a provided format
+function(generate_object target suffix type)
+    add_custom_command(TARGET ${target} POST_BUILD
+        COMMAND ${CMAKE_OBJCOPY} -O ${type} "$<TARGET_FILE:${target}>" "${CMAKE_CURRENT_BINARY_DIR}/${target}${suffix}"
+    )
+endfunction()
+
+# Set linker script for a target
+function(target_linker_script target scope script)
+    target_link_options(${target} "${scope}" "-T${script}")
+
+    get_target_property(_cur_link_deps ${target} LINK_DEPENDS)
+    if (_cur_link_deps STREQUAL "_cur_link_deps-NOTFOUND")
+        set(_cur_link_deps "")
+    endif()
+    
+    string(APPEND _cur_link_deps "${script}")
+    set_target_properties(${target} PROPERTIES LINK_DEPENDS ${_cur_link_deps})
+endfunction()
+
+# Write file only if content has changed
+function(write_file_if_changed file content)
+    if (EXISTS "${file}")
+        file(READ "${file}" existing_content)
+    else()
+        set(existing_content "")
+    endif()
+    
+    if (NOT "${existing_content}" STREQUAL "${content}")
+        file(WRITE "${file}" "${content}")
+    endif()
+endfunction()
+
+# Embed a file into a target
+function(embed_file target file symbol)
+    cmake_path(IS_ABSOLUTE file is_absolute)
+    if (NOT is_absolute)
+        set(file "${CMAKE_CURRENT_SOURCE_DIR}/${file}")
+    endif()
+
+    cmake_path(GET file FILENAME filename)
+
+    set(generated_dir "${CMAKE_CURRENT_BINARY_DIR}/generated")
+    if (NOT EXISTS "${generated_dir}")
+        file(MAKE_DIRECTORY "${generated_dir}")
+    endif()
+
+    set(generated_objects "${generated_dir}_objects")
+    if (NOT EXISTS "${generated_objects}")
+        file(MAKE_DIRECTORY "${generated_objects}")
+    endif()
+
+    set(asm_path "${generated_objects}/${filename}.S")
+    write_file_if_changed("${asm_path}"
+".global ${symbol}_data
+.global ${symbol}_size
+.section .rodata
+.align 4
+${symbol}_data:
+    .incbin \"${file}\"
+1:
+${symbol}_size:
+    .int 1b - ${symbol}_data
+")
+
+    add_custom_command(OUTPUT "${asm_path}"
+        COMMAND ${CMAKE_COMMAND} -E touch "${asm_path}"
+        DEPENDS "${file}")
+
+    target_sources("${target}" PRIVATE "${asm_path}")
+
+    set(header_path "${generated_dir}/${filename}")
+    
+    write_file_if_changed("${header_path}.h"
+"#pragma once
+
+#ifdef __cplusplus
+extern \"C\" {
+#endif
+
+extern const char ${symbol}_data[];
+extern const unsigned int ${symbol}_size;
+
+#ifdef __cplusplus
+}
+#endif
+")
+
+    write_file_if_changed("${header_path}.hpp"
+"#pragma once
+
+#include \"${header_path}.h\"
+#include <span>
+
+inline const std::span<const char> ${symbol}{${symbol}_data, ${symbol}_size};
+")
+endfunction()