I'm trying to set up a cross-compile environment in VSCode on Ubuntu using CMake with Yocto SDK. I need to ensure that the necessary environment variables are set before running VSCode in the project folder. Currently, I set the environment variables by running the following command in the terminal:
$ source /opt/poky/3.1.2/environment-setup-XxXxXx
Without these environment variables, CMake is unable to locate the required dependencies.
I would like to know if it's possible to automate this step within VSCode, such that the necessary Yocto SDK environment variables are automatically set every time I open the project. Can this be achieved through modifications in the settings.json file or any other method?
Script for configuring environment variables:
if [ ! -z "$LD_LIBRARY_PATH" ]; then
echo "Your environment is misconfigured, you probably need to 'unset LD_LIBRARY_PATH'"
echo "but please check why this was set in the first place and that it's safe to unset."
echo "The SDK will not operate correctly in most cases when LD_LIBRARY_PATH is set."
echo "For more references see:"
echo " http://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html#AEN80"
echo " http://xahlee.info/UnixResource_dir/_/ldpath.html"
return 1
fi
export SDKTARGETSYSROOT=/opt/poky/3.3.4/sysroots/corei7-64-poky-linux
export PATH=/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/usr/bin:/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/usr/sbin:/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/bin:/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/sbin:/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/usr/bin/../x86_64-pokysdk-linux/bin:/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux:/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux-musl:$PATH
export PKG_CONFIG_SYSROOT_DIR=$SDKTARGETSYSROOT
export PKG_CONFIG_PATH=$SDKTARGETSYSROOT/usr/lib/pkgconfig:$SDKTARGETSYSROOT/usr/share/pkgconfig
export CONFIG_SITE=/opt/poky/3.3.4/site-config-corei7-64-poky-linux
export OECORE_NATIVE_SYSROOT="/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux"
export OECORE_TARGET_SYSROOT="$SDKTARGETSYSROOT"
export OECORE_ACLOCAL_OPTS="-I /opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/usr/share/aclocal"
export OECORE_BASELIB="lib"
export OECORE_TARGET_ARCH="x86_64"
export OECORE_TARGET_OS="linux"
unset command_not_found_handle
export CC="x86_64-poky-linux-gcc -m64 -march=nehalem -mtune=generic -mfpmath=sse -msse4.2 -fstack-protector-strong -O2 -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security --sysroot=$SDKTARGETSYSROOT"
export CXX="x86_64-poky-linux-g++ -m64 -march=nehalem -mtune=generic -mfpmath=sse -msse4.2 -fstack-protector-strong -O2 -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security --sysroot=$SDKTARGETSYSROOT"
export CPP="x86_64-poky-linux-gcc -E -m64 -march=nehalem -mtune=generic -mfpmath=sse -msse4.2 -fstack-protector-strong -O2 -D_FORTIFY_SOURCE=2 -Wformat -Wformat-security -Werror=format-security --sysroot=$SDKTARGETSYSROOT"
export AS="x86_64-poky-linux-as "
export LD="x86_64-poky-linux-ld --sysroot=$SDKTARGETSYSROOT"
export GDB=x86_64-poky-linux-gdb
export STRIP=x86_64-poky-linux-strip
export RANLIB=x86_64-poky-linux-ranlib
export OBJCOPY=x86_64-poky-linux-objcopy
export OBJDUMP=x86_64-poky-linux-objdump
export READELF=x86_64-poky-linux-readelf
export AR=x86_64-poky-linux-ar
export NM=x86_64-poky-linux-nm
export M4=m4
export TARGET_PREFIX=x86_64-poky-linux-
export CONFIGURE_FLAGS="--target=x86_64-poky-linux --host=x86_64-poky-linux --build=x86_64-linux --with-libtool-sysroot=$SDKTARGETSYSROOT"
export CFLAGS=" -O2 -pipe -g -feliminate-unused-debug-types "
export CXXFLAGS=" -O2 -pipe -g -feliminate-unused-debug-types "
export LDFLAGS="-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,-z,relro,-z,now"
export CPPFLAGS=""
export KCFLAGS="--sysroot=$SDKTARGETSYSROOT"
export OECORE_DISTRO_VERSION="3.3.4"
export OECORE_SDK_VERSION="3.3.4"
export ARCH=x86
export CROSS_COMPILE=x86_64-poky-linux-
# Append environment subscripts
if [ -d "$OECORE_TARGET_SYSROOT/environment-setup.d" ]; then
for envfile in $OECORE_TARGET_SYSROOT/environment-setup.d/*.sh; do
. $envfile
done
fi
if [ -d "$OECORE_NATIVE_SYSROOT/environment-setup.d" ]; then
for envfile in $OECORE_NATIVE_SYSROOT/environment-setup.d/*.sh; do
. $envfile
done
fi
To enable VsCode/CMake to locate the necessary dependencies, I created a cmake-kits.json file inside the .vscode folder of my project. This file serves as a configuration for CMake kits. Here is an example cmake-kits.json file:
[
{
"name": "Yocto-Poky: GCC 10.3.0 x86_64-poky-linux",
"compilers": {
"C": "/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/x86_64-poky-linux-gcc",
"CXX": "/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/x86_64-poky-linux-g++"
},
"environmentSetupScript": "/opt/poky/3.3.4/environment-setup-corei7-64-poky-linux",
"toolchainFile": "/opt/poky/3.3.4/sysroots/x86_64-pokysdk-linux/usr/share/cmake/OEToolchainConfig.cmake"
}
]