Can't load TGA image embedded with CMake?

Question

I'm trying to embed images and shaders in a single opengl executable file by adding this:

FUNCTION(ADD_RESOURCES out_var)
  SET(result)
  FOREACH(in_f ${ARGN})
    FILE(RELATIVE_PATH src_f ${CMAKE_SOURCE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/${in_f})
    SET(out_f "${PROJECT_BINARY_DIR}/${in_f}.o")
    ADD_CUSTOM_COMMAND(OUTPUT ${out_f}
      COMMAND ld -r -b binary -o ${out_f} ${src_f}
      DEPENDS ${in_f}
      WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
      COMMENT "Building object ${out_f}"
      VERBATIM
      )
    LIST(APPEND result ${out_f})
  ENDFOREACH()
  SET(${out_var} "${result}" PARENT_SCOPE)
ENDFUNCTION()

ADD_RESOURCES(RES
    shaders/test.vert
    shaders/test.frag
    misc/a.tga
)

extern const char _binary_shaders_test_vert_start, _binary_shaders_test_vert_end;
extern const char _binary_shaders_test_frag_start, _binary_shaders_test_frag_end;
extern const unsigned char _binary_misc_a_tga_start, _binary_misc_a_tga_end;

The problem is that loaded shaders work well, but tga can't be loaded. After looking into the log, I found that &_binary_misc_a_tga_endand&_binary_misc_a_tga_start did exist though the value of these address are all 0.

To make it clear, &_binary_misc_a_tga_endand&_binary_misc_a_tga_start are like those shader objects, nothing strange. The value from _binary_misc_a_tga_end to _binary_misc_a_tga_start are 0 which is strange.

misc/a.tga.o did exist. I also tried nm command whose result turned out to be

000000000092a212 D _binary_misc_a_tga_end
00000000000c0012 A _binary_misc_a_tga_size
000000000086a200 D _binary_misc_a_tga_start
00000000004d0c84 t _ZN12_GLOBAL__N_118tga_decompress_RLEEPhPKhS2_iii

Why this doesn't work on image file and is there any solution?

user_13613695 · Answer

Actually my problem has nothing to do with this embedding issue. The tga object was successfully loaded. It was the image loading library that didn't recognize the object due to my misunderstanding of the parameters.

So the conclusion is that both cmake and my loading code work well. Now should I just delete this question?

Sorry for asking this since I'm not very familiar with community rules.

Can't load TGA image embedded with CMake?

1 Answers