无法使用 aarch64-unknown-nto-qnx7.0.0-g++-5.4.0 编译器交叉编译 QNX 平台的 gRPC。

Question

我正在尝试用QNX aarch64-unknown-nto-qnx7.0.0-g++-5.4.0编译器交叉编译gRPC代码，我正在使用toolchain.cmake文件进行编译。

toolchain.cmake。

SET(CMAKE_SYSTEM_NAME QNX)
SET(CMAKE_SYSTEM_PROCESSOR arm)
set(CMAKE_CROSSCOMPILING 1)
set(CMAKE_SYSROOT "$ENV{TOOLCHAIN_PATH}")
set(CMAKE_C_COMPILER "$ENV{TOOLCHAIN_PATH}/usr/bin/aarch64-unknown-nto-qnx7.0.0-gcc-5.4.0")
set(CMAKE_CXX_COMPILER "$ENV{TOOLCHAIN_PATH}/usr/bin/aarch64-unknown-nto-qnx7.0.0-g++-5.4.0")
set(CMAKE_CXX_FLAGS "-Vgcc_ntoaarch64 -O2 -Wc,-Wall -DBUILDENV_qss -g -Os -Wall -march=armv8-a -mcpu=cortex-a57 -mtune=cortex-a57 \
        -fstack-protector-strong -DNDEBUG -DFMT_HEADER_ONLY -EL -DVARIANT_le -std=c++11 -stdlib=libstdc++ -lang-c++ \
        -I . \
        -I$ENV{TOOLCHAIN_PATH}/usr/include \
        -I$ENV{TOOLCHAIN_PATH}/usr/include/WF \
        -I$ENV{TOOLCHAIN_PATH}/usr/include/KHR \
        -I$ENV{INSTALL_ROOT_nto}/usr/include \
        -Wl,-L$ENV{INSTALL_ROOT_nto}/aarch64le/lib \
        -Wl,-L$ENV{INSTALL_ROOT_nto}/aarch64le/usr/lib \
        -Wl,-L$ENV{TOOLCHAIN_PATH}/aarch64le/lib \
        -Wl,-L$ENV{TOOLCHAIN_PATH}/aarch64le/usr/lib")

我得到以下错误，即使我使用了-std=c++11（gnu++11也试过）。

error: #error "C++ versions less than C++11 are not supported."
error: 'constexpr' does not name a type
error: '__to_gcc_order' is not a member of 'std::__1::__gcc_atomic'
error: 'NormalizeLogSeverity' is not a member of 'absl'

请帮助我解决这个问题。

Answer 1

set(CMAKE_CXX_STANDARD 11)or-std=c++11。