mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-23 06:01:15 +00:00
136 lines
4 KiB
Bash
136 lines
4 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 gcc 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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#
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# Unfortunately, setting -B appears to override the default search
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# path. Thus, the gcc-specific "../includes-fixed" directory is
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# now longer searched and glibc's <limits.h> header fails to
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# compile, because it uses "#include_next <limits.h>" to find the
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# limits.h file in ../includes-fixed. To remedy the problem,
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# another -idirafter is necessary to add that directory again.
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echo "-B$libc/lib/ -idirafter $libc/include -idirafter $gcc/lib/gcc/*/*/include-fixed" > $out/nix-support/libc-cflags
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echo "-L$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 gcc/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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gccPath="$nativePrefix/bin"
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ldPath="$nativePrefix/bin"
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else
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if test -e "$gcc/lib64"; then
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gccLDFlags="$gccLDFlags -L$gcc/lib64"
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fi
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gccLDFlags="$gccLDFlags -L$gcc/lib"
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echo "$gccLDFlags" > $out/nix-support/gcc-ldflags
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# GCC shows $gcc/lib in `gcc -print-search-dirs', but not
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# $gcc/lib64 (even though it does actually search there...)..
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# This confuses libtool. So add it to the compiler tool search
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# path explicitly.
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if test -e "$gcc/lib64"; then
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gccCFlags="$gccCFlags -B$gcc/lib64"
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fi
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echo "$gccCFlags" > $out/nix-support/gcc-cflags
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gccPath="$gcc/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@^$shell^g" \
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-e "s^@gcc@^$gcc^g" \
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-e "s^@gccProg@^$gccProg^g" \
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-e "s^@binutils@^$binutils^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 gcc, g++, and gfortran. Also make symlinks
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# cc, c++, and f77.
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mkGccWrapper() {
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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 "$src does not exist (skipping)"
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return
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fi
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gccProg="$src"
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doSubstitute "$gccWrapper" "$dst"
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chmod +x "$dst"
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}
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mkGccWrapper $out/bin/gcc $gccPath/gcc
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ln -s gcc $out/bin/cc
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mkGccWrapper $out/bin/g++ $gccPath/g++
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ln -s g++ $out/bin/c++
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if test -e $gccPath/gfortran; then
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mkGccWrapper $out/bin/gfortran $gccPath/gfortran
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ln -s gfortran $out/bin/g77
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ln -s gfortran $out/bin/f77
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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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# gcc-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 GCC and
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# Glibc.
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test -n "$gcc" && echo $gcc > $out/nix-support/orig-gcc
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test -n "$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 $out/nix-support/utils.sh
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# Propagate the wrapped gcc so that if you install the wrapper, you get
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# tools like gcov, the manpages, etc. as well (including for binutils
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# and Glibc).
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if test -z "$nativeTools"; then
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echo $gcc $binutils $libc > $out/nix-support/propagated-user-env-packages
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fi
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