From 95a5c97122b7c5bdeba61f2e890bae9a961dd4bf Mon Sep 17 00:00:00 2001 From: Khem Raj Date: Wed, 8 Dec 2021 10:01:22 -0800 Subject: [PATCH] Disable LTO on clang/riscv With clang in OE LTO does not work as it does not seem to carry right target info and mixes ABIs | Hard-float 'd' ABI can't be used for a target that doesn't support the D instruction set extension (ignoring target-abi) | /mnt/b/yoe/master/build/tmp/work/riscv32-yoe-linux/tbb/1_2021.4.0-r0/recipe-sysroot-native/usr/bin/riscv32-yoe-linux/riscv32-yoe-linux-ld: /tmp/lto-llvm-3fb1bf.o: can't link soft-float modules with double-float modules | /mnt/b/yoe/master/build/tmp/work/riscv32-yoe-linux/tbb/1_2021.4.0-r0/recipe-sysroot-native/usr/bin/riscv32-yoe-linux/riscv32-yoe-linux-ld: failed to merge target specific data of file /tmp/lto-llvm-3fb1bf.o Upstream-Status: Inappropriate [ OE-Specific ] Signed-off-by: Khem Raj --- cmake/compilers/Clang.cmake | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/cmake/compilers/Clang.cmake +++ b/cmake/compilers/Clang.cmake @@ -60,7 +60,7 @@ endif() # Enabling LTO on Android causes the NDK bug. # NDK throws the warning: "argument unused during compilation: '-Wa,--noexecstack'" -if (NOT ANDROID_PLATFORM AND BUILD_SHARED_LIBS) +if (NOT ANDROID_PLATFORM AND BUILD_SHARED_LIBS AND NOT CMAKE_SYSTEM_PROCESSOR MATCHES "(riscv32|riscv64|arm)") set(TBB_IPO_COMPILE_FLAGS $<$>:-flto>) set(TBB_IPO_LINK_FLAGS $<$>:-flto>) endif()