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...;int main(){;return 0;}"> test.c gcc -v -isystem /usr/include/i386-linux-gnu -L/usr/lib/i386-linux-gnu test.c Here's the output from that: *** $ gcc -v -isystem /usr/include/i386-linux-gnu -L/usr/lib/i386-linux-gnu test.c Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/home/youngmj/DevTools/Gnu_Compiler_Collection-gcc/Version_4.7.2/install/libexec/gcc/i686-pc-linux-gnu/4.7.2/lto-wrapper Target: i686-pc-linux-gnu Configured with: /home/youngmj/DevTools/Gnu_Compiler_Collection-gcc/Version_4.7.2/source/gcc-4.7.2/configure --prefix=/home/youngmj/DevTools/Gnu_Compiler_Collecti...

I'm continuing this here in llvm-dev since the thread was started here, but, in hindsight, it may have been better in cfe-dev, because the problem seems to be related to clang. I turned on "verbose" mode in make (VERBOSE=1 TOOL_VERBOSE=1) and found that it is clang, not gcc, that is being used at this point in the make. Based on the command issued (particularly with the --sysroot

...m the 3.2 source distribution tarballs, but I ran into this build error that's got me really puzzled. My platform is Linux - 32-bit Ubuntu (12.04) running on a PC. Here's the (abbreviated) output from make: *************************************** ... make[3]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/build/tools/clang/runtime' make[4]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/build/tools/clang/runtime/compiler-rt' make[5]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/source/compiler-rt-3.2.src' MKDIR: /home/youngmj/De...

...tarballs, but I ran into this build error that's got me > really puzzled. My platform is Linux - 32-bit Ubuntu (12.04) running > on a PC. Here's the (abbreviated) output from make: > > *************************************** > ... > make[3]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/build/tools/clang/runtime' > make[4]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/build/tools/clang/runtime/compiler-rt' > make[5]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/source/compiler-rt-3.2.src' > MKDIR:...

...'m posting this here to document what I encountered and the solution I found, in hopes that others may find it useful. When building clang 3.2 on Linux (Ubuntu 12.04, 32-bit, x86 PC), I received the following errors (messages from the make output): ... make[4]: Entering directory `/home/youngmj/DevTools/LLVM/Version_3.2/build/tools/clang/runtime/compiler-rt' /bin/sh: 1: sw_vers: not found ... COMPILE: clang_linux/full-i386/i386: /home/youngmj/DevTools/LLVM/Version_3.2/source/llvm-3.2.src/projects/compiler-rt/lib/enable_execute_stack.c In file included from /home/youngmj/D...