Hi,
On Wed, Oct 31, 2018 at 03:36:38PM +0800, lzSun wrote:
yes, you're right. If you want to compile with hard-float and link against the C++ runtime library >delivered by Genode's toolchain, it will fail. You need to compile the Genode toolchain yourself, >if this is a hard requirement for you. Have a look at the tool/tool_chain script in Genode's source >code repository therefore.
Hello ,Stefan. Thanks for your reply! Now I am trying to compile the Genode toolchain myself. I used the scripts in tools/tool_chain but still encountered the same problem. I think I should add some flags in tools/tool_chain, but I have no idea what to add and where to add the flags. I have tried add "GCC_MAKE_OPT += -mfloat-abi=hard -mfpu=vfp" but it make failed. So could you give me some hint on this? Thanks a lot.
not the flags are relevant here, but the configure options for building binutils and gcc. Although, I did not test the outcome, I think the following patch shall produce a hard-float capable compiler:
diff --git a/tool/tool_chain b/tool/tool_chain index 88dd767..3653c6c 100755 --- a/tool/tool_chain +++ b/tool/tool_chain @@ -177,7 +177,7 @@ LOCAL_INSTALL_LOCATION = $(shell pwd)/build/install LOCAL_LIB_INSTALL_LOCATION = $(shell pwd)/build/lib-install
TARGET_NAME_x86 = x86_64-pc-elf -TARGET_NAME_arm = arm-none-eabi +TARGET_NAME_arm = arm-none-eabihf TARGET_NAME_riscv = riscv64-unknown-elf
GCC_CONFIG_riscv = --with-arch=rv64imac
Best regards Stefan
Best wishes
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