diff options
| -rw-r--r-- | toolchain/toolchain-external/toolchain-external.mk | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/toolchain/toolchain-external/toolchain-external.mk b/toolchain/toolchain-external/toolchain-external.mk index 4b4b463031..967e9ec4e4 100644 --- a/toolchain/toolchain-external/toolchain-external.mk +++ b/toolchain/toolchain-external/toolchain-external.mk @@ -666,11 +666,12 @@ endif # Build toolchain wrapper for preprocessor, C and C++ compiler and setup # symlinks for everything else. Skip gdb symlink when we are building our # own gdb to prevent two gdb's in output/host/usr/bin. -# When the link-time-optimization flag '-flto' is used, then the compiler -# and binutils have to support lto. ar/ranlib need to be called with the -# lto plugin. The wrappers *-gcc-ar and *-gcc-ranlib provided by GCC could -# be used as drop-ins for ar/runlib when Makefiles are used which do not -# pass the lto arguments. +# The LTO support in gcc creates wrappers for ar, ranlib and nm which load +# the lto plugin. These wrappers are called *-gcc-ar, *-gcc-ranlib, and +# *-gcc-nm and should be used instead of the real programs when -flto is +# used. However, we should not add the toolchain wrapper for them, and they +# match the *cc-* pattern. Therefore, an additional case is added for *-ar, +# *-ranlib and *-nm. define TOOLCHAIN_EXTERNAL_INSTALL_WRAPPER $(Q)$(call MESSAGE,"Building ext-toolchain wrapper") $(Q)mkdir -p $(HOST_DIR)/usr/bin |
