commit 19c64284fb33372bd1a9185e0e8bb2a7b32265a1
author hlopko <hlopko@google.com> Tue Feb 27 07:28:40 2018 -0800
committer Copybara-Service <copybara-piper@google.com> Tue Feb 27 07:30:05 2018 -0800
tree 8a81259559d86292c12c5e4f358403117901102d
parent 6e0933886d3c6b7f68075da4bdb08500ce2b6f86

Consult BAZEL_LINKOPTS env variable when detecting linker flags in autogenerated cc toolchain

Relevant to #4031, fixes #4524.

Does not affect the osx + xcode toolchain that supports both C++ and ObjC!

RELNOTES: BAZEL_LINKOPTS is now consulted when autoconfiguring c++ toolchain

Now linker flags for the autogenerated C++ toolchain can be controlled by
BAZEL_LINKOPTS environment variable (using colon as a flag separator):

    BAZEL_LINKOPTS=-lc++ bazel build //...

The default value is "-lstdc++:-lm".

PiperOrigin-RevId: 187173297

tools/cpp/cc_configure.bzl

diff --git a/tools/cpp/cc_configure.bzl b/tools/cpp/cc_configure.bzl
index 610f5a7..858c5bc 100644
--- a/tools/cpp/cc_configure.bzl
+++ b/tools/cpp/cc_configure.bzl
@@ -48,6 +48,7 @@
         "ABI_VERSION",
         "BAZEL_COMPILER",
         "BAZEL_HOST_SYSTEM",
+        "BAZEL_LINKOPTS",
         "BAZEL_PYTHON",
         "BAZEL_SH",
         "BAZEL_TARGET_CPU",