https://blog.arcanelab.com/tags/otool/Recent content in Otool on Arcanelab BlogHugoen-USZoltán MajorosTue, 26 Apr 2016 01:25:00 +0200https://blog.arcanelab.com/2016/04/otool-nm-examples-printing-object-files-included-in-the/Tue, 26 Apr 2016 01:25:00 +0200https://blog.arcanelab.com/2016/04/otool-nm-examples-printing-object-files-included-in-the/<h1>otool / nm examples</h1> <h2>Printing object files included in the library and their exported functions</h2> <pre> $&gt;otool -SV /usr/local/lib/libSDL2_image.a Archive : /usr/local/lib/libSDL2_image.a Table of contents from: /usr/local/lib/libSDL2_image.a(__.SYMDEF SORTED) size of ranlib structures: 392 (number 49) size of strings: 696 object symbol name IMG.o _IMG_Init IMG_jpg.o _IMG_InitJPG IMG_png.o _IMG_InitPNG IMG_tif.o _IMG_InitTIF IMG_webp.o _IMG_InitWEBP IMG.o _IMG_Linked_Version IMG.o _IMG_Load IMG_bmp.o _IMG_LoadBMP_RW IMG_bmp.o _IMG_LoadCUR_RW ... </pre> <h2>Printing shared libraries used</h2> <pre> $&gt; otool -L /usr/local/lib/libSDL2.dylib /usr/local/lib/libSDL2.dylib: /usr/local/opt/sdl2/lib/libSDL2-2.0.0.dylib (compatibility version 5.0.0, current version 5.0.0) /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1226.10.1) /usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0) /usr/lib/libobjc.A.dylib (compatibility version 1.0.0, current version 228.0.0) /System/Library/Frameworks/ForceFeedback.framework/Versions/A/ForceFeedback (compatibility version 1.0.0, current version 1.0.2) /System/Library/Frameworks/CoreVideo.framework/Versions/A/CoreVideo (compatibility version 1.2.0, current version 1.5.0) /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa (compatibility version 1.0.0, current version 22.0.0) ... </pre> <h2>Printing invoked external functions from executable</h2> <pre> $&gt; otool -IV testapp testapp: Indirect symbols for (__TEXT,__stubs) 38 entries address index name 0x000000010001bc0e 134 ___tolower 0x000000010001bc14 135 _fclose 0x000000010001bc1a 136 _fopen 0x000000010001bc20 137 _fread 0x000000010001bc26 138 _fseek 0x000000010001bc2c 139 _ftell 0x000000010001bc32 140 _memcpy 0x000000010001bc38 141 _memset 0x000000010001bc3e 142 _printf 0x000000010001bc44 143 _puts 0x000000010001bc4a 144 _snprintf 0x000000010001bc50 145 _strlen ... </pre> <h2>Listing all symbols (internal/external) in binary files</h2> <pre> nm [file] Example snippet: 0000000100001560 T _main U _memcpy U _memset U _printf U _puts U _snprintf U _strlen U dyld_stub_binder </pre> <p>More info on <code>nm</code> on <a href="https://en.wikipedia.org/wiki/Nm_%28Unix%29">Wikipedia</a>.</p>