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copied!<p><code>crti.o</code> is the bootstrap library, generally quite small. It's usually statically linked into your binary. It should be found in <code>/usr/lib</code>.</p> <p>If you're running a binary distribution they tend to put all the developer stuff into -dev packages (e.g. libc6-dev) as it's not needed to run compiled programs, just to build them.</p> <p>You're not cross-compiling are you? </p> <p>If you're cross-compiling it's usually a problem with gcc's search path not matching where your crti.o is. It should have been built when the toolchain was. The first thing to check is <code>gcc -print-search-dirs</code> and see if crti.o is in any of those paths.</p> <p>The linking is actually done by ld but it has its paths passed down to it by gcc. Probably the quickest way to find out what's going on is compile a helloworld.c program and strace it to see what is getting passed to ld and see what's going on.</p> <pre><code>strace -v -o log -f -e trace=open,fork,execve gcc hello.c -o test </code></pre> <p>Open the log file and search for crti.o, as you can see my non-cross compiler:</p> <pre><code>10616 execve("/usr/bin/ld", ["/usr/bin/ld", "--eh-frame-hdr", "-m", "elf_x86_64", "--hash-style=both", "-dynamic-linker", "/lib64/ld-linux-x86-64.so.2", "-o" , "test", "/usr/lib/gcc/x86_64-linux-gnu/4."..., "/usr/lib/gcc/x86_64-linux-gnu/4."..., "/usr/lib/gcc/x86_64-linux-gnu/4."..., "-L/usr/lib/gcc/x86_64-linux-g nu/"..., "-L/usr/lib/gcc/x86_64-linux-gnu/"..., "-L/usr/lib/gcc/x86_64-linux-gnu/"..., "-L/lib/../lib", "-L/usr/lib/../lib", "-L/usr/lib/gcc/x86_64-linux-gnu /"..., "/tmp/cc4rFJWD.o", "-lgcc", "--as-needed", "-lgcc_s", "--no-as-needed", "-lc", "-lgcc", "--as-needed", "-lgcc_s", "--no-as-needed", "/usr/lib/gcc/x86_ 64-linux-gnu/4."..., "/usr/lib/gcc/x86_64-linux-gnu/4."...], "COLLECT_GCC=gcc", "COLLECT_GCC_OPTIONS=\'-o\' \'test\' "..., "COMPILER_PATH=/usr/lib/gcc/x86_6"..., "LIBRARY_PATH=/usr/lib/gcc/x86_64"..., "CO LLECT_NO_DEMANGLE="]) = 0 10616 open("/etc/ld.so.cache", O_RDONLY) = 3 10616 open("/usr/lib/libbfd-2.18.0.20080103.so", O_RDONLY) = 3 10616 open("/lib/libc.so.6", O_RDONLY) = 3 10616 open("test", O_RDWR|O_CREAT|O_TRUNC, 0666) = 3 10616 open("/usr/lib/gcc/x86_64-linux-gnu/4.2.3/../../../../lib/crt1.o", O_RDONLY) = 4 10616 open("/usr/lib/gcc/x86_64-linux-gnu/4.2.3/../../../../lib/crti.o", O_RDONLY) = 5 10616 open("/usr/lib/gcc/x86_64-linux-gnu/4.2.3/crtbegin.o", O_RDONLY) = 6 10616 open("/tmp/cc4rFJWD.o", O_RDONLY) = 7 </code></pre> <p>If you see a bunch of attempts to <code>open(...crti.o) = -1 ENOENT</code>, <code>ld</code> is getting confused and you want to see where the path it's opening came from...</p>

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