source $stdenv/setup ensureDir $out/bin ensureDir $out/nix-support if test -z "$nativeLibc"; then dynamicLinker="$libc/lib/$dynamicLinker" echo $dynamicLinker > $out/nix-support/dynamic-linker if test -e $libc/lib/32/ld-linux.so.2; then echo $libc/lib/32/ld-linux.so.2 > $out/nix-support/dynamic-linker-m32 fi # The "-B$libc/lib/" flag is a quick hack to force clang to link # against the crt1.o from our own glibc, rather than the one in # /usr/lib. (This is only an issue when using an `impure' # compiler/linker, i.e., one that searches /usr/lib and so on.) echo "-B$libc/lib/ -idirafter $libc/include" > $out/nix-support/libc-cflags echo "-L$libc/lib" > $out/nix-support/libc-ldflags # The dynamic linker is passed in `ldflagsBefore' to allow # explicit overrides of the dynamic linker by callers to clang/ld # (the *last* value counts, so ours should come first). echo "-dynamic-linker $dynamicLinker" > $out/nix-support/libc-ldflags-before fi if test -n "$nativeTools"; then clangPath="$nativePrefix/bin" ldPath="$nativePrefix/bin" else basePath=`echo $gcc/lib/*/*/*` # Need libgcc until the llvm compiler-rt library is complete clangLDFlags="$clangLDFlags -L$basePath" if test -e "$gcc/lib64"; then clangLDFlags="$clangLDFlags -L$gcc/lib64" else clangLDFlags="$clangLDFlags -L$gcc/lib" fi clangLDFlags="$clangLDFlags -L$clang/lib" echo "$clangLDFlags" > $out/nix-support/clang-ldflags # Need files like crtbegin.o from gcc # It's unclear if these will ever be provided by an LLVM project clangCFlags="$clangCFlags -B$basePath" clangCFlags="$clangCFlags -isystem$clang/lib/clang/$clangVersion/include" echo "$clangCFlags" > $out/nix-support/clang-cflags clangPath="$clang/bin" ldPath="$binutils/bin" fi doSubstitute() { local src=$1 local dst=$2 # Can't use substitute() here, because replace may not have been # built yet (in the bootstrap). sed \ -e "s^@out@^$out^g" \ -e "s^@shell@^$shell^g" \ -e "s^@clang@^$clang^g" \ -e "s^@clangProg@^$clangProg^g" \ -e "s^@binutils@^$binutils^g" \ -e "s^@coreutils@^$coreutils^g" \ -e "s^@libc@^$libc^g" \ -e "s^@ld@^$ldPath/ld^g" \ < "$src" > "$dst" } # Make wrapper scripts around clang and clang++. Also make symlinks # cc and c++ mkClangWrapper() { local dst=$1 local src=$2 if ! test -f "$src"; then echo "$src does not exist (skipping)" return 1 fi clangProg="$src" doSubstitute "$clangWrapper" "$dst" chmod +x "$dst" } if mkClangWrapper $out/bin/clang $clangPath/clang then ln -sv clang $out/bin/cc fi if mkClangWrapper $out/bin/clang++ $clangPath/clang++ then ln -sv clang++ $out/bin/c++ fi # Create a symlink to as (the assembler). This is useful when a # clang-wrapper is installed in a user environment, as it ensures that # the right assembler is called. ln -s $ldPath/as $out/bin/as # Make a wrapper around the linker. doSubstitute "$ldWrapper" "$out/bin/ld" chmod +x "$out/bin/ld" # Emit a setup hook. Also store the path to the original Clang and # libc. test -n "$clang" && echo $clang > $out/nix-support/orig-clang test -n "$libc" && echo $libc > $out/nix-support/orig-libc doSubstitute "$addFlags" "$out/nix-support/add-flags.sh" doSubstitute "$setupHook" "$out/nix-support/setup-hook" cp -p $utils $out/nix-support/utils.sh # Propagate the wrapped clang so that if you install the wrapper, you get # llvm tools, the manpages, etc. as well (including for binutils # and Glibc). if test -z "$nativeTools"; then echo $clang $binutils $libc > $out/nix-support/propagated-user-env-packages fi