我没有使用Yocto插件在Eclipse中构建简单的Hello World C ++ CMake项目。 Yocto的版本是“thud”。
local.conf有一行：
TOOLCHAIN_HOST_TASK_append += " nativesdk-cmake"
我已经构建了sdk
bitbake myBoard -c populate_sdk
我已经安装了jdk，获取了环境设置，从同一个终端启动了eclipse并配置了yocto插件。
环境脚本具有以下变量：
export SDKTARGETSYSROOT=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
export CC="arm-fslc-linux-gnueabi-gcc -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard --sysroot=$SDKTARGETSYSROOT"
export CXX="arm-fslc-linux-gnueabi-g++ -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard --sysroot=$SDKTARGETSYSROOT"
export CPP="arm-fslc-linux-gnueabi-gcc -E -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard --sysroot=$SDKTARGETSYSROOT"
当我尝试构建时，我有以下输出（事件来源sdk环境设置，然后从命令行cmake）：
$ cmake ..
-- The C compiler identification is GNU 8.2.0
-- The CXX compiler identification is GNU 8.2.0
-- Check for working C compiler: /yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux/usr/bin/arm-fslc-linux-gnueabi/arm-fslc-linux-gnueabi-gcc
-- Check for working C compiler: /yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux/usr/bin/arm-fslc-linux-gnueabi/arm-fslc-linux-gnueabi-gcc -- broken
CMake Error at /yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux/usr/share/cmake-3.12/Modules/CMakeTestCCompiler.cmake:52 (message):
The C compiler
"/yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux/usr/bin/arm-fslc-linux-gnueabi/arm-fslc-linux-gnueabi-gcc"
is not able to compile a simple test program.
It fails with the following output:
Change Dir: /yocto/eclipse-ws/prova/Debug/CMakeFiles/CMakeTmp
Run Build Command:"/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi/usr/bin/make" "cmTC_4df0b/fast"
/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi/usr/bin/make: 1: /yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi/usr/bin/make: Syntax error: word unexpected (expecting ")")
CMake will not be able to correctly generate this project.
Call Stack (most recent call first):
CMakeLists.txt:4 (PROJECT)
-- Configuring incomplete, errors occurred!
See also "/yocto/eclipse-ws/prova/Debug/CMakeFiles/CMakeOutput.log".
See also "/yocto/eclipse-ws/prova/Debug/CMakeFiles/CMakeError.log".
有人看到错误或丢失导致错误？
预先感谢您的任何帮助
更新 CMakeOutput.log显示：
The system is: Linux - 4.15.0-47-generic - x86_64
Compiling the C compiler identification source file "CMakeCCompilerId.c" succeeded.
Compiler: /yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux/usr/bin/arm-fslc-linux-gnueabi/arm-fslc-linux-gnueabi-gcc
Build flags: ;;;--sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi;;-march=armv7-a;-mthumb;-mfpu=neon;-mfloat-abi=hard;
Id flags:
The output was:
0
Compilation of the C compiler identification source "CMakeCCompilerId.c" produced "a.out"
The C compiler identification is GNU, found in "/yocto/eclipse-ws/prova/Debug/CMakeFiles/3.12.2/CompilerIdC/a.out"
Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" succeeded.
Compiler: /yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux/usr/bin/arm-fslc-linux-gnueabi/arm-fslc-linux-gnueabi-g++
Build flags: ;;;--sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi;;-march=armv7-a;-mthumb;-mfpu=neon;-mfloat-abi=hard;;-fpermissive
Id flags:
The output was:
0
Compilation of the CXX compiler identification source "CMakeCXXCompilerId.cpp" produced "a.out"
The CXX compiler identification is GNU, found in "/yocto/eclipse-ws/prova/Debug/CMakeFiles/3.12.2/CompilerIdCXX/a.out"
更新2 如果我从Debug文件夹中删除所有内容并从命令行运行cmake，我就取得了成功，即使在Eclipse中也可以构建。如果我在CMakeLists.txt中更改了某些内容，则会再次显示错误。
我看到Debug / CMakeFiles / 3.12.2 / CMakeSystem.cmake在由eclipse或命令行生成时是不同的：
日食）
set(CMAKE_HOST_SYSTEM "Linux-4.15.0-47-generic")
set(CMAKE_HOST_SYSTEM_NAME "Linux")
set(CMAKE_HOST_SYSTEM_VERSION "4.15.0-47-generic")
set(CMAKE_HOST_SYSTEM_PROCESSOR "x86_64")
include("/yocto/eclipse-ws/prova/toolchain.cmake")
set(CMAKE_SYSTEM "Linux-4.15.0-47-generic")
set(CMAKE_SYSTEM_NAME "Linux")
set(CMAKE_SYSTEM_VERSION "4.15.0-47-generic")
set(CMAKE_SYSTEM_PROCESSOR "x86_64")
set(CMAKE_CROSSCOMPILING "FALSE")
set(CMAKE_SYSTEM_LOADED 1)
命令行）
set(CMAKE_HOST_SYSTEM "Linux-4.15.0-47-generic")
set(CMAKE_HOST_SYSTEM_NAME "Linux")
set(CMAKE_HOST_SYSTEM_VERSION "4.15.0-47-generic")
set(CMAKE_HOST_SYSTEM_PROCESSOR "x86_64")
include("/yocto/sdk/aw70pc_am8000/sysroots/x86_64-fslcsdk-linux/usr/share/cmake/OEToolchainConfig.cmake")
set(CMAKE_SYSTEM "Linux")
set(CMAKE_SYSTEM_NAME "Linux")
set(CMAKE_SYSTEM_VERSION "")
set(CMAKE_SYSTEM_PROCESSOR "armv7at2hf-neon-fslc")
set(CMAKE_CROSSCOMPILING "TRUE")
set(CMAKE_SYSTEM_LOADED 1)
根据我的理解，eclipse插件生成的配置使用arm工具链编译测试程序，而不是交叉编译，显然它失败了。命令行中的Cmake改为以正确的方式生成它，但它被eclipse中的第一次更改覆盖。
这是danlor要求的printenv
ARCH=arm
CONFIG_SITE=/yocto/sdk/myBoard/site-config-armv7at2hf-neon-fslc-linux-gnueabi
SDKTARGETSYSROOT=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
CFLAGS= -O2 -pipe -g -feliminate-unused-debug-types
KCFLAGS=--sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
OECORE_ACLOCAL_OPTS=-I /yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux/usr/share/aclocal
CC=arm-fslc-linux-gnueabi-gcc -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard --sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
OECORE_DISTRO_VERSION=2.6
OECORE_SDK_VERSION=2.6.1
PKG_CONFIG_SYSROOT_DIR=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
CXXFLAGS= -O2 -pipe -g -feliminate-unused-debug-types
STRIP=arm-fslc-linux-gnueabi-strip
OBJCOPY=arm-fslc-linux-gnueabi-objcopy
CONFIGURE_FLAGS=--target=arm-fslc-linux-gnueabi --host=arm-fslc-linux-gnueabi --build=x86_64-linux --with-libtool-sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
OECORE_NATIVE_SYSROOT=/yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux
RANLIB=arm-fslc-linux-gnueabi-ranlib
OBJDUMP=arm-fslc-linux-gnueabi-objdump
AS=arm-fslc-linux-gnueabi-as
AR=arm-fslc-linux-gnueabi-ar
TARGET_PREFIX=arm-fslc-linux-gnueabi-
NM=arm-fslc-linux-gnueabi-nm
CXX=arm-fslc-linux-gnueabi-g++ -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard --sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
OECORE_TARGET_OS=linux-gnueabi
OECORE_TARGET_ARCH=arm
OECORE_TARGET_SYSROOT=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
CROSS_COMPILE=arm-fslc-linux-gnueabi-
OE_CMAKE_TOOLCHAIN_FILE=/yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux/usr/share/cmake/OEToolchainConfig.cmake
CPPFLAGS=
LDFLAGS=-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed
OE_CMAKE_FIND_LIBRARY_CUSTOM_LIB_SUFFIX=
OECORE_BASELIB=lib
PKG_CONFIG_PATH=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi/usr/lib/pkgconfig:/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi/usr/share/pkgconfig
CPP=arm-fslc-linux-gnueabi-gcc -E -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard --sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
LD=arm-fslc-linux-gnueabi-ld --sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi
toolchain.cmake
# CMake system name must be something like "Linux".
# This is important for cross-compiling.
set(CMAKE_SYSTEM_PROCESSOR )
set(CMAKE_C_COMPILER arm-fslc-linux-gnueabi-gcc)
set(CMAKE_CXX_COMPILER arm-fslc-linux-gnueabi-g++)
set(CMAKE_C_FLAGS " --sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard " CACHE STRING "CFLAGS")
set(CMAKE_CXX_FLAGS " --sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard -fpermissive" CACHE STRING "CXXFLAGS")
set(CMAKE_C_FLAGS_RELEASE " --sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard -DNDEBUG" CACHE STRING "CFLAGS for release")
set(CMAKE_CXX_FLAGS_RELEASE " --sysroot=/yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi -march=armv7-a -mthumb -mfpu=neon -mfloat-abi=hard -DNDEBUG" CACHE STRING "CXXFLAGS for release")
set(CMAKE_C_LINK_FLAGS "" CACHE STRING "LDFLAGS")
set(CMAKE_CXX_LINK_FLAGS "" CACHE STRING "LDFLAGS")
# only search in the paths provided so cmake doesnt pick
# up libraries and tools from the native build machine
set(CMAKE_FIND_ROOT_PATH /yocto/sdk/myBoard/sysroots/x86_64-fslcsdk-linux /yocto/sdk/myBoard/sysroots/armv7at2hf-neon-fslc-linux-gnueabi )
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
# Use qt.conf settings
set(ENV{QT_CONF_PATH} qt.conf)
# We need to set the rpath to the correct directory as cmake does not provide any
# directory as rpath by default
set(CMAKE_INSTALL_RPATH )
# Use native cmake modules
set(CMAKE_MODULE_PATH /cmake/Modules/)
# add for non /usr/lib libdir, e.g. /usr/lib64
set(CMAKE_LIBRARY_PATH ${libdir} ${base_libdir})
我找到了出路
在CMakeLists.txt中添加以下两行将告诉cmake编译器工作并且不测试它 SET（CMAKE_C_COMPILER_WORKS 1） SET（CMAKE_CXX_COMPILER_WORKS 1）
现在我可以成功构建自己的程序，它就像一个魅力。 这意味着Eclipse可以交叉编译我的程序，但在检查系统时，它以不同的方式构建测试程序。
您似乎正在尝试使用交叉编译的make工具（为您的TARGET编译的工具，即/ yocto / sdk / myBoard / sysroots / armv7at2hf-neon-fslc-linux-gnueabi / usr / bin / make而不是HOST make工具（/ yocto / sdk / myBoard / sysroots / x86_64-fslcsdk-linux / usr / bin / make）。改变它，然后再试一次:)