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.. | ||
bind.c | ||
lin-aout.c | ||
lin-elf.c | ||
README | ||
x86nasm.md |
This directory contains the necessary files to port the C compiler ``LCC'' (available by FTP from sunsite.doc.ic.ac.uk in the directory /computing/programming/languages/c/lcc) to compile for Linux (a.out or ELF) by using NASM as a back-end code generator. This patch has been tested on lcc version 3.6. To install: - Copy `x86nasm.md' into the `src' directory of the lcc tree. - Copy either `lin-elf.c' or `lin-aout.c' into the `etc' directory. - If you're installing for a.out, edit `x86nasm.md' and change the conditional after the comment reading "CHANGE THIS FOR a.out" in the `defsymbol' function from `#if 0' to `#if 1'. - Make the following changes to `bind.c' in the `src' directory: - Near the top of the file, add a line that reads extern Interface x86nasmIR; - In the `bindings' array, add the lines "x86-nasm", &x86nasmIR, "x86/nasm", &x86nasmIR, (in sensible looking places...) A sample `bind.c' has been provided to show what the result of this might look like. You might be able to get away with using it directly... - Modify the lcc makefile to include rules for x86nasm.o: this will have to be done in about three places. Just copy any line with `x86' on it and modify it to read `x86nasm' everywhere. (Except that in the list of object files that rcc is made up from, do remember to ensure that every line but the last has a trailing backslash...) - You may have to modify the contents of `lin-elf.c' or `lin-aout.c' to reflect the true locations of files such as crt0.o, crt1.o, ld-linux.so and so forth. If you don't know where to find these, compile a short C program with `gcc -v' and see what command line gcc feeds to `ld'. - You should now be able to build lcc, using `lin-elf.c' or `lin-aout.c' as the system-dependent part of the `lcc' wrapper program. - Symlink x86nasm.c into the `src' directory before attempting the triple test, or the compile will fail. - Now it should pass the triple test, on either ELF or a.out. Voila!