diff options
Diffstat (limited to 'pkgs/build-support/bintools-wrapper/ld-wrapper.sh')
| -rw-r--r-- | pkgs/build-support/bintools-wrapper/ld-wrapper.sh | 66 |
1 files changed, 58 insertions, 8 deletions
diff --git a/pkgs/build-support/bintools-wrapper/ld-wrapper.sh b/pkgs/build-support/bintools-wrapper/ld-wrapper.sh index 81b5a90edd5..2f96480f80c 100644 --- a/pkgs/build-support/bintools-wrapper/ld-wrapper.sh +++ b/pkgs/build-support/bintools-wrapper/ld-wrapper.sh @@ -23,11 +23,22 @@ fi # Optionally filter out paths not refering to the store. expandResponseParams "$@" + +# NIX_LINK_TYPE is set if ld has been called through our cc wrapper. We take +# advantage of this to avoid both recalculating it, and also repeating other +# processing cc wrapper has already done. +if [[ -n "${NIX_LINK_TYPE_@suffixSalt@:-}" ]]; then + linkType=$NIX_LINK_TYPE_@suffixSalt@ +else + linkType=$(checkLinkType "$@") +fi + if [[ "${NIX_ENFORCE_PURITY:-}" = 1 && -n "${NIX_STORE:-}" - && ( -z "$NIX_IGNORE_LD_THROUGH_GCC_@suffixSalt@" || -z "${NIX_LDFLAGS_SET_@suffixSalt@:-}" ) ]]; then + && ( -z "$NIX_IGNORE_LD_THROUGH_GCC_@suffixSalt@" || -z "${NIX_LINK_TYPE_@suffixSalt@:-}" ) ]]; then rest=() nParams=${#params[@]} declare -i n=0 + while (( "$n" < "$nParams" )); do p=${params[n]} p2=${params[n+1]:-} # handle `p` being last one @@ -55,17 +66,32 @@ if [[ "${NIX_ENFORCE_PURITY:-}" = 1 && -n "${NIX_STORE:-}" params=(${rest+"${rest[@]}"}) fi + source @out@/nix-support/add-hardening.sh extraAfter=() extraBefore=(${hardeningLDFlags[@]+"${hardeningLDFlags[@]}"}) -if [ -z "${NIX_LDFLAGS_SET_@suffixSalt@:-}" ]; then - extraAfter+=($NIX_LDFLAGS_@suffixSalt@) - extraBefore+=($NIX_LDFLAGS_BEFORE_@suffixSalt@) +if [ -z "${NIX_LINK_TYPE_@suffixSalt@:-}" ]; then + extraAfter+=($(filterRpathFlags "$linkType" $NIX_LDFLAGS_@suffixSalt@)) + extraBefore+=($(filterRpathFlags "$linkType" $NIX_LDFLAGS_BEFORE_@suffixSalt@)) + + # By adding dynamic linker to extraBefore we allow the users set their + # own dynamic linker as NIX_LD_FLAGS will override earlier set flags + if [[ "$linkType" == dynamic && -n "$NIX_DYNAMIC_LINKER_@suffixSalt@" ]]; then + extraBefore+=("-dynamic-linker" "$NIX_DYNAMIC_LINKER_@suffixSalt@") + fi +fi + +extraAfter+=($(filterRpathFlags "$linkType" $NIX_LDFLAGS_AFTER_@suffixSalt@)) + +# These flags *must not* be pulled up to -Wl, flags, so they can't go in +# add-flags.sh. They must always be set, so must not be disabled by +# NIX_LDFLAGS_SET. +if [ -e @out@/nix-support/add-local-ldflags-before.sh ]; then + source @out@/nix-support/add-local-ldflags-before.sh fi -extraAfter+=($NIX_LDFLAGS_AFTER_@suffixSalt@) # Specify the target emulation if nothing is passed in ("-m" overrides this # environment variable). Ensures we never blindly fallback on targeting the host @@ -83,6 +109,8 @@ declare -a libDirs declare -A libs declare -i relocatable=0 link32=0 +linkerOutput="a.out" + if [ "$NIX_DONT_SET_RPATH_@suffixSalt@" != 1 ] \ || [ "$NIX_SET_BUILD_ID_@suffixSalt@" = 1 ] \ @@ -134,7 +162,25 @@ then done fi -if [ -e "@out@/nix-support/dynamic-linker-m32" ] && (( "$link32" )); then +# Determine linkerOutput +prev= +for p in \ + ${extraBefore+"${extraBefore[@]}"} \ + ${params+"${params[@]}"} \ + ${extraAfter+"${extraAfter[@]}"} +do + case "$prev" in + -o) + # Informational for post-link-hook + linkerOutput="$p" + ;; + *) + ;; + esac + prev="$p" +done + +if [[ "$link32" == "1" && "$linkType" == dynamic && -e "@out@/nix-support/dynamic-linker-m32" ]]; then # We have an alternate 32-bit linker and we're producing a 32-bit ELF, let's # use it. extraAfter+=( @@ -144,7 +190,7 @@ if [ -e "@out@/nix-support/dynamic-linker-m32" ] && (( "$link32" )); then fi # Add all used dynamic libraries to the rpath. -if [ "$NIX_DONT_SET_RPATH_@suffixSalt@" != 1 ]; then +if [[ "$NIX_DONT_SET_RPATH_@suffixSalt@" != 1 && "$linkType" != static-pie ]]; then # For each directory in the library search path (-L...), # see if it contains a dynamic library used by a -l... flag. If # so, add the directory to the rpath. @@ -204,7 +250,11 @@ fi PATH="$path_backup" # Old bash workaround, see above. -exec @prog@ \ +@prog@ \ ${extraBefore+"${extraBefore[@]}"} \ ${params+"${params[@]}"} \ ${extraAfter+"${extraAfter[@]}"} + +if [ -e "@out@/nix-support/post-link-hook" ]; then + source @out@/nix-support/post-link-hook +fi |