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