mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-11-26 00:43:20 +00:00
Partially merge gcc-wrapper and clang-wrapper
Having a separate clang-wrapper is really unfortunate because it
means that we'll forever forget to apply changes to both (e.g.
commit 289895fe2c). This commit
gets rid of the redundant copies of ld-wrapper.sh and utils.sh.
This commit is contained in:
Eelco Dolstra
parent
fd1a5d8531
commit
a4f9b9c8b5
@ -21,4 +21,4 @@ if test -e @out@/nix-support/libc-ldflags-before; then
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export NIX_LDFLAGS_BEFORE="$(cat @out@/nix-support/libc-ldflags-before) $NIX_LDFLAGS_BEFORE"
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fi
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export NIX_CLANG_WRAPPER_FLAGS_SET=1
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export NIX_GCC_WRAPPER_FLAGS_SET=1
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@ -1,10 +1,10 @@
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#! @shell@ -e
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if test -n "$NIX_CLANG_WRAPPER_START_HOOK"; then
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source "$NIX_CLANG_WRAPPER_START_HOOK"
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if test -n "$NIX_GCC_WRAPPER_START_HOOK"; then
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source "$NIX_GCC_WRAPPER_START_HOOK"
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fi
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if test -z "$NIX_CLANG_WRAPPER_FLAGS_SET"; then
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if test -z "$NIX_GCC_WRAPPER_FLAGS_SET"; then
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source @out@/nix-support/add-flags.sh
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fi
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@ -29,8 +29,8 @@ stdenv.mkDerivation {
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builder = ./builder.sh;
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setupHook = ./setup-hook.sh;
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clangWrapper = ./clang-wrapper.sh;
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ldWrapper = ./ld-wrapper.sh;
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utils = ./utils.sh;
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ldWrapper = ../gcc-wrapper/ld-wrapper.sh;
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utils = ../gcc-wrapper/utils.sh;
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addFlags = ./add-flags;
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inherit nativeTools nativeLibc nativePrefix clang clangVersion libcxx;
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@ -1,164 +0,0 @@
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#! @shell@ -e
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if test -n "$NIX_LD_WRAPPER_START_HOOK"; then
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source "$NIX_LD_WRAPPER_START_HOOK"
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fi
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if test -z "$NIX_CLANG_WRAPPER_FLAGS_SET"; then
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source @out@/nix-support/add-flags.sh
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fi
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source @out@/nix-support/utils.sh
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# Optionally filter out paths not refering to the store.
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params=("$@")
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if test "$NIX_ENFORCE_PURITY" = "1" -a -n "$NIX_STORE" \
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-a \( -z "$NIX_IGNORE_LD_THROUGH_CLANG" -o -z "$NIX_LDFLAGS_SET" \); then
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rest=()
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n=0
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while test $n -lt ${#params[*]}; do
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p=${params[n]}
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p2=${params[$((n+1))]}
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if test "${p:0:3}" = "-L/" && badPath "${p:2}"; then
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skip $p
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elif test "$p" = "-L" && badPath "$p2"; then
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n=$((n + 1)); skip $p2
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elif test "$p" = "-rpath" && badPath "$p2"; then
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n=$((n + 1)); skip $p2
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elif test "$p" = "-dynamic-linker" && badPath "$p2"; then
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n=$((n + 1)); skip $p2
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elif test "${p:0:1}" = "/" && badPath "$p"; then
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# We cannot skip this; barf.
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echo "impure path \`$p' used in link" >&2
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exit 1
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elif test "${p:0:9}" = "--sysroot"; then
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# Our ld is not built with sysroot support (Can we fix that?)
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:
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else
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rest=("${rest[@]}" "$p")
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fi
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n=$((n + 1))
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done
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params=("${rest[@]}")
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fi
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extra=()
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extraBefore=()
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if test -z "$NIX_LDFLAGS_SET"; then
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extra+=($NIX_LDFLAGS $NIX_LDFLAGS_AFTER)
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extraBefore+=($NIX_LDFLAGS_BEFORE)
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fi
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# Add all used dynamic libraries to the rpath.
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if test "$NIX_DONT_SET_RPATH" != "1"; then
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libPath=""
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addToLibPath() {
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local path="$1"
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if test "${path:0:1}" != "/"; then return 0; fi
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case "$path" in
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*..*|*./*|*/.*|*//*)
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local path2
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if path2=$(readlink -f "$path"); then
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path="$path2"
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fi
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;;
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esac
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case $libPath in
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*\ $path\ *) return 0 ;;
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esac
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libPath="$libPath $path "
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}
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addToRPath() {
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# If the path is not in the store, don't add it to the rpath.
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# This typically happens for libraries in /tmp that are later
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# copied to $out/lib. If not, we're screwed.
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if test "${1:0:${#NIX_STORE}}" != "$NIX_STORE"; then return 0; fi
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case $rpath in
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*\ $1\ *) return 0 ;;
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esac
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rpath="$rpath $1 "
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}
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libs=""
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addToLibs() {
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libs="$libs $1"
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}
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rpath=""
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# First, find all -L... switches.
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allParams=("${params[@]}" ${extra[@]})
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n=0
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while test $n -lt ${#allParams[*]}; do
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p=${allParams[n]}
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p2=${allParams[$((n+1))]}
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if test "${p:0:3}" = "-L/"; then
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addToLibPath ${p:2}
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elif test "$p" = "-L"; then
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addToLibPath ${p2}
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n=$((n + 1))
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elif test "$p" = "-l"; then
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addToLibs ${p2}
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n=$((n + 1))
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elif test "${p:0:2}" = "-l"; then
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addToLibs ${p:2}
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elif test "$p" = "-dynamic-linker"; then
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# Ignore the dynamic linker argument, or it
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# will get into the next 'elif'. We don't want
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# the dynamic linker path rpath to go always first.
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n=$((n + 1))
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elif [[ "$p" =~ ^[^-].*\.so($|\.) ]]; then
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# This is a direct reference to a shared library, so add
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# its directory to the rpath.
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path="$(dirname "$p")";
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addToRPath "${path}"
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fi
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n=$((n + 1))
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done
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# Second, for each directory in the library search path (-L...),
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# see if it contains a dynamic library used by a -l... flag. If
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# so, add the directory to the rpath.
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# It's important to add the rpath in the order of -L..., so
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# the link time chosen objects will be those of runtime linking.
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for i in $libPath; do
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for j in $libs; do
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if test -f "$i/lib$j.so"; then
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addToRPath $i
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break
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fi
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done
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done
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# Finally, add `-rpath' switches.
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for i in $rpath; do
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extra=(${extra[@]} -rpath $i)
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done
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fi
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# Optionally print debug info.
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if test "$NIX_DEBUG" = "1"; then
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echo "original flags to @ld@:" >&2
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for i in "${params[@]}"; do
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echo " $i" >&2
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done
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echo "extra flags to @ld@:" >&2
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for i in ${extra[@]}; do
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echo " $i" >&2
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done
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fi
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if test -n "$NIX_LD_WRAPPER_EXEC_HOOK"; then
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source "$NIX_LD_WRAPPER_EXEC_HOOK"
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fi
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exec @ld@ ${extraBefore[@]} "${params[@]}" ${extra[@]}
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@ -1,24 +0,0 @@
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skip () {
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if test "$NIX_DEBUG" = "1"; then
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echo "skipping impure path $1" >&2
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fi
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}
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# Checks whether a path is impure. E.g., `/lib/foo.so' is impure, but
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# `/nix/store/.../lib/foo.so' isn't.
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badPath() {
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local p=$1
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# Relative paths are okay (since they're presumably relative to
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# the temporary build directory).
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if test "${p:0:1}" != "/"; then return 1; fi
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# Otherwise, the path should refer to the store or some temporary
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# directory (including the build directory).
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test \
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"$p" != "/dev/null" -a \
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"${p:0:${#NIX_STORE}}" != "$NIX_STORE" -a \
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"${p:0:4}" != "/tmp" -a \
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"${p:0:${#NIX_BUILD_TOP}}" != "$NIX_BUILD_TOP"
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}
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