LLVM MinGW installation on Vista?

Question

From llvm.org I've downloaded llvm-2.6-x86-mingw32.tar.bz2 into c:\llvm and llvm-gcc-4.2-2.6-x86-mingw32-tar.bz2 into c:\llvm-gcc as well as setup a desktop shortcut the following batch file in c:\llvm-gcc which attempts to setup an environment for compiling via the llvm-gcc command line too:

@echo off
color 0E
echo Configuring LLVM environment...
set LLVM_LIB_SEARCH_PATH=%~dp0lib
set PATH=c:\llvm;%~dp0bin;%PATH%

Unfortunately, this setup gives the following error when trying to compile a simple hello world program:

C:\CDev\sandbox>llvm-gcc -o hello.exe hello.c
llvm-gcc: CreateProcess: No such file or directory

I've briefly looked through the LLVM binaries and it appears that the MinGW-based Win32 API and runtime files are already included. I also tried adding the MinGW DLL to c:\llvm-gcc\bin to no avail.

What have I missed in setting up the binary LLVM environment and GCC-based front end on Vista?

Thanks, Jon

Answer 1

As far as I can tell, the answer is that the MinGW distribution supplied by LLVM is not complete, in particular, it doesn't come with the 'binutils' programs.

The recommended solution seems to be to download and install MinGW yourself. However, the MinGW download page seems to be saying this requires 10 different packages to be downloaded and installed separately.

The solution I tried today was to use the MinGW that comes with Qt, which does come in a single package; thus far, that appears to work.

Answer 2

@rwallace is correct that one needs to also install MinGW's binutils along with the LLVM binary download. I've updated the LLVM documentation appropriately at

http://llvm.org/docs/GettingStarted.html#installcf

Answer 3

Because the GNU/MinGW assembler 'as' was required by 'llvm-gcc' to generate the obj file. The problem can be solved by using:

1. Install GNU/MinGW binutils, extract the as.exe into c:\llvm-gcc\bin
2. Install a full MinGW package, add %MinGW%\bin your %PATH%

Answer 4

It seems like it is looking for the base MinGW installation in C:\MinGW. I just had this error today using gcc.exe in msys. To solve it, I created a symbolic link from c:\msys to c:\MinGW and everything worked.