Remove LTO-related hacks from binutils build script.

third_party/binutils/build-one.sh

Index: third_party/binutils/build-one.sh
diff --git a/third_party/binutils/build-one.sh b/third_party/binutils/build-one.sh
index ccb58be35e7a8d46ca5a3ff7480be4255f7b3c27..9eb81e8856c00ba9ac51ea07e2eaa693f8098a3c 100755
--- a/third_party/binutils/build-one.sh
+++ b/third_party/binutils/build-one.sh
@@ -15,42 +15,6 @@ if [ -z "$1" ]; then
 fi
 
 cd "$1"
-
-# First, we need to build libtcmalloc_minimal
-
-cd ../gperftools/
-./autogen.sh
-./configure \
-  --disable-cpu-profiler \
-  --disable-heap-checker \
-  --disable-heap-profiler \
-  --disable-static \
-  --enable-minimal
-
-echo
-echo "= gperftools src/config.h =========================================="
-cat src/config.h
-echo "===================================================================="
-echo
-
-make -j8
-
-cd "$1"
-
-# Ask the dynamic loader to load libstdc++ from the LLVM build directory if
-# available. That copy of libstdc++ is required by the gold plugin in the same
-# directory. Do the same for libtcmalloc_minimal, that is stored in ../lib.
-# The dynamic loader expects the relative path to start with $ORIGIN,
-# but because of escaping issues
-# (https://sourceware.org/ml/binutils/2009-05/msg00252.html)
-# we embed a dummy path with $ replaced with z and fix it up later.
-
-readonly LIBSTDCPP_RPATH="zORIGIN/../../../../llvm-build/Release+Asserts/lib"
-readonly LIBTCMALLOC_RPATH="zORIGIN/../lib"
-export LDFLAGS="-Wl,-rpath,$LIBSTDCPP_RPATH:$LIBTCMALLOC_RPATH \
-                -L$(pwd)/../gperftools/.libs/"
-export LIBS='-ltcmalloc_minimal'
-
 ./configure \
   --enable-deterministic-archives \
   --enable-gold=default \
@@ -66,21 +30,3 @@ cat binutils/config.h
 echo "===================================================================="
 echo
 make install
-
-# Copy libtcmalloc_minimal library and symlinks to the install lib dir.
-cp -a ../gperftools/.libs/libtcmalloc_minimal.so* /build/output/*/lib/
-
-# Save the list of binaries. The sed -i command will leave .orig files behind.
-# We don't want them to appear in the for loop below.
-bins="$(echo /build/output/*/bin/*)"
-
-# Fix up zORIGIN -> $ORIGIN.
-sed -i.orig 's,zORIGIN,$ORIGIN,g' $bins
-
-# Verify that we changed only two bytes per executable.
-for bin in $bins; do
-  test "`cmp -l $bin.orig $bin | wc -l`" = 2 || \
-    (echo "$bin: verification failed" && exit 1)
-done
-
-rm /build/output/*/bin/*.orig