about summary refs log tree commit diff
path: root/pkgs/build-support
diff options
context:
space:
mode:
authorJohn Ericson <Ericson2314@yahoo.com>2017-12-29 17:42:38 -0500
committerGitHub <noreply@github.com>2017-12-29 17:42:38 -0500
commiteb27be0731aa9a6566eabec13dd24391eac45882 (patch)
tree9e43a9fc746d8d43f02e5223e344794770eb71ea /pkgs/build-support
parentb1dcc6c2012ef2190caf30043af457c15253abcd (diff)
parentcc44e04472bf8d0774e09a6cc4bd47175e531b8e (diff)
Merge pull request #33186 from obsidiansystems/cross-binutils
binutils: Fix cross, again
Diffstat (limited to 'pkgs/build-support')
-rw-r--r--pkgs/build-support/bintools-wrapper/default.nix14
-rw-r--r--pkgs/build-support/bintools-wrapper/ld-wrapper.sh5
2 files changed, 19 insertions, 0 deletions
diff --git a/pkgs/build-support/bintools-wrapper/default.nix b/pkgs/build-support/bintools-wrapper/default.nix
index 0dcae204824d5..57859b2f371be 100644
--- a/pkgs/build-support/bintools-wrapper/default.nix
+++ b/pkgs/build-support/bintools-wrapper/default.nix
@@ -164,6 +164,20 @@ stdenv.mkDerivation {
       set +u
     '';
 
+  emulation = let
+    fmt =
+      /**/ if targetPlatform.isDarwin  then "mach-o"
+      else if targetPlatform.isWindows then "pe"
+      else "elf" + toString targetPlatform.parsed.cpu.bits;
+    endianPrefix = if targetPlatform.isBigEndian then "big" else "little";
+    arch =
+      /**/ if targetPlatform.isAarch64 then endianPrefix + "aarch64"
+      else if targetPlatform.isArm     then endianPrefix + "arm"
+      else if targetPlatform.isx86_64  then "x86-64"
+      else if targetPlatform.isi686    then "i386"
+      else throw "unknown emulation for platform: " + targetPlatform.config;
+    in targetPlatform.platform.bfdEmulation or (fmt + "-" + arch);
+
   propagatedBuildInputs = extraPackages;
 
   setupHook = ./setup-hook.sh;
diff --git a/pkgs/build-support/bintools-wrapper/ld-wrapper.sh b/pkgs/build-support/bintools-wrapper/ld-wrapper.sh
index 136621d27af55..991ed0fe263c1 100644
--- a/pkgs/build-support/bintools-wrapper/ld-wrapper.sh
+++ b/pkgs/build-support/bintools-wrapper/ld-wrapper.sh
@@ -67,6 +67,11 @@ fi
 
 extraAfter+=($NIX_@infixSalt@_LDFLAGS_AFTER)
 
+# Specify the target emulation if nothing is passed in ("-m" overrides this
+# environment variable). Ensures we never blindly fallback on targeting the host
+# platform.
+: ${LDEMULATION:=@emulation@}
+
 # Three tasks:
 #
 #   1. Find all -L... switches for rpath