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copied!<p>This is what's worked for me:</p> <p>ASM file:</p> <pre><code>; file: blahasm.asm ; assemble with nasm (v 2.10, Mar 12 2012): nasm -f elf32 blahasm.asm -o blahasm.o bits 32 global _blah _blah: mov eax, 42 ret </code></pre> <p>C file:</p> <pre><code>// file: blahc.c // compile with MinGW x86 (gcc v 4.6.2): gcc -Wall -O2 blahc.c blahasm.o -o blah.exe #include <stdio.h> extern int blah(void); int main(void) { printf("blah():%d\n", blah()); return 0; } </code></pre> <p>Output:</p> <pre><code>blah():42 </code></pre> <p>I'm surprised that the only format that's worked is <code>elf32</code> and that it's supported in a Windows port of gcc, which MinGW is.</p> <p><strong>UPDATE</strong>:</p> <p>I've created an assembly-only program with NASM and MinGW.</p> <p>ASM file:</p> <pre><code>; file: nsm.asm ; assemble with NASM (v 2.10, Mar 12 2012): nasm -f elf32 nsm.asm -o nsm.o ; compile (link) with MinGW x86 (gcc v 4.6.2): gcc -Wall -O2 nsm.o -o nsm.exe bits 32 extern ___main extern _printf global _main section .rdata textstr: db "Hello World!", 10, 0 section .text.startup _main: call ___main push textstr call _printf add esp, 4 ret </code></pre> <p>Output:</p> <pre><code>Hello World! </code></pre> <p>I'm running gcc from the "MinGW Shell" (MSYS) and I don't need to specify any additional command line parameters to make the program successfully link with the standard library. And I did not need to do anything special about MinGW and MSYS installation, I think I used all default setup parameters.</p>

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