162 lines
4.3 KiB
Bash
162 lines
4.3 KiB
Bash
#! @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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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 "$NIX_LDFLAGS_SET"; then
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extra=(${extra[@]} $NIX_LDFLAGS)
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extraBefore=(${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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