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cc-wrapper: Port over finding of dynamic linker from gcc-cross-wrapper

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At the next break, we can deduplicate and go for the best of both
worlds.
This commit is contained in:
John Ericson 2017-06-19 11:10:27 -04:00 committed by John Ericson
parent 0aee847858
commit c2e2152afc
1 changed files with 39 additions and 21 deletions
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58
pkgs/build-support/cc-wrapper/default.nix
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@ -102,6 +102,24 @@ let
sed -i $out -E -e "s~NIX_${infixSalt_}$var([^a-zA-Z_]|$)~NIX_$var\1~g"
done
'');
# The dynamic linker has different names on different platforms.
dynamicLinker =
if !nativeLibc then
(if targetPlatform.system == "i686-linux" then "ld-linux.so.2" else
if targetPlatform.system == "x86_64-linux" then "ld-linux-x86-64.so.2" else
# ARM with a wildcard, which can be "" or "-armhf".
if targetPlatform.isArm32 then "ld-linux*.so.3" else
if targetPlatform.system == "aarch64-linux" then "ld-linux-aarch64.so.1" else
if targetPlatform.system == "powerpc-linux" then "ld.so.1" else
if targetPlatform.system == "mips64el-linux" then "ld.so.1" else
if targetPlatform.system == "x86_64-darwin" then "/usr/lib/dyld" else
if stdenv.lib.hasSuffix "pc-gnu" targetPlatform.config then "ld.so.1" else
builtins.trace
"Don't know the name of the dynamic linker for platform ${targetPlatform.config}, so guessing instead."
null)
else "";
in
stdenv.mkDerivation {
@ -144,7 +162,12 @@ stdenv.mkDerivation {
}
''
+ optionalString (libc != null) (if (!targetPlatform.isDarwin) then ''
# TODO(@Ericson2314): Unify logic next hash break
+ optionalString (libc != null) (if (targetPlatform.isDarwin) then ''
echo $dynamicLinker > $out/nix-support/dynamic-linker
echo "export LD_DYLD_PATH=\"$dynamicLinker\"" >> $out/nix-support/setup-hook
'' else if dynamicLinker != null then ''
dynamicLinker="${libc_lib}/lib/$dynamicLinker"
echo $dynamicLinker > $out/nix-support/dynamic-linker
@ -157,9 +180,21 @@ stdenv.mkDerivation {
# (the *last* value counts, so ours should come first).
echo "-dynamic-linker" $dynamicLinker > $out/nix-support/libc-ldflags-before
'' else ''
dynamicLinker=`eval 'echo $libc/lib/ld*.so.?'`
if [ -n "$dynamicLinker" ]; then
echo $dynamicLinker > $out/nix-support/dynamic-linker
echo "export LD_DYLD_PATH=\"$dynamicLinker\"" >> $out/nix-support/setup-hook
if [ -e ${libc_lib}/lib/32/ld-linux.so.2 ]; then
echo ${libc_lib}/lib/32/ld-linux.so.2 > $out/nix-support/dynamic-linker-m32
fi
ldflagsBefore="-dynamic-linker $dlinker"
fi
# The dynamic linker is passed in `ldflagsBefore' to allow
# explicit overrides of the dynamic linker by callers to gcc/ld
# (the *last* value counts, so ours should come first).
echo "$ldflagsBefore" > $out/nix-support/libc-ldflags-before
'')
+ optionalString (libc != null) ''
@ -331,24 +366,7 @@ stdenv.mkDerivation {
''
+ extraBuildCommands;
# The dynamic linker has different names on different Linux platforms.
#
# TODO(1b62c9c06173f4d5e6b090e5ae0c68fa5f478faf): This is not the best way to
# do this. I think the reference should be the style in the gcc-cross-wrapper,
# but to keep a stable stdenv now I do this sufficient if/else.
dynamicLinker =
if !nativeLibc then
(if targetPlatform.system == "i686-linux" then "ld-linux.so.2" else
if targetPlatform.system == "x86_64-linux" then "ld-linux-x86-64.so.2" else
# ARM with a wildcard, which can be "" or "-armhf".
if targetPlatform.isArm32 then "ld-linux*.so.3" else
if targetPlatform.system == "aarch64-linux" then "ld-linux-aarch64.so.1" else
if targetPlatform.system == "powerpc-linux" then "ld.so.1" else
if targetPlatform.system == "mips64el-linux" then "ld.so.1" else
if targetPlatform.system == "x86_64-darwin" then "/usr/lib/dyld" else
if stdenv.lib.hasSuffix "pc-gnu" targetPlatform.config then "ld.so.1" else
abort "Don't know the name of the dynamic linker for this platform.")
else "";
inherit dynamicLinker;
crossAttrs = {
shell = shell.crossDrv + shell.crossDrv.shellPath;