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{ lib, stdenv, crossStageStatic, langD ? false, libcCross, threadsCross }:
let
inherit (stdenv) hostPlatform targetPlatform;
in
{
# For non-cross builds these flags are currently assigned in builder.sh.
# It would be good to consolidate the generation of makeFlags
# ({C,CXX,LD}FLAGS_FOR_{BUILD,TARGET}, etc...) at some point.
EXTRA_FLAGS_FOR_TARGET = let
mkFlags = dep: langD: lib.optionals (targetPlatform != hostPlatform && dep != null && !langD) ([
"-O2 -idirafter ${lib.getDev dep}${dep.incdir or "/include"}"
] ++ lib.optionals (! crossStageStatic) [
"-B${lib.getLib dep}${dep.libdir or "/lib"}"
]);
in mkFlags libcCross langD
++ lib.optionals (!crossStageStatic) (mkFlags (threadsCross.package or null) langD)
;
EXTRA_LDFLAGS_FOR_TARGET = let
mkFlags = dep: lib.optionals (targetPlatform != hostPlatform && dep != null) ([
"-Wl,-L${lib.getLib dep}${dep.libdir or "/lib"}"
] ++ (if crossStageStatic then [
"-B${lib.getLib dep}${dep.libdir or "/lib"}"
] else [
"-Wl,-rpath,${lib.getLib dep}${dep.libdir or "/lib"}"
"-Wl,-rpath-link,${lib.getLib dep}${dep.libdir or "/lib"}"
]));
in mkFlags libcCross
++ lib.optionals (!crossStageStatic) (mkFlags (threadsCross.package or null))
;
}
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