Configure RHEL/CentOS 7
Caution
This article references CentOS, a Linux distribution that is End Of Life (EOL) status. Please consider your use and planning accordingly. For more information, see the CentOS End Of Life guidance.
To use the Speech SDK on Red Hat Enterprise Linux (RHEL) 7 x64 and CentOS 7 x64, update the C++ compiler (for C++ development) and the shared C++ runtime library on your system.
Install dependencies
First install all general dependencies:
sudo rpm -Uvh https://packages.microsoft.com/config/rhel/7/packages-microsoft-prod.rpm
# Install development tools and libraries
sudo yum update -y
sudo yum groupinstall -y "Development tools"
sudo yum install -y alsa-lib dotnet-sdk-2.1 java-1.8.0-openjdk-devel openssl
sudo yum install -y gstreamer1 gstreamer1-plugins-base gstreamer1-plugins-good gstreamer1-plugins-bad-free gstreamer1-plugins-ugly-free
C/C++ compiler and runtime libraries
Install the prerequisite packages with this command:
sudo yum install -y gmp-devel mpfr-devel libmpc-devel
Next update the compiler and runtime libraries:
# Build GCC 7.5.0 and runtimes and install them under /usr/local
curl https://ftp.gnu.org/gnu/gcc/gcc-7.5.0/gcc-7.5.0.tar.gz -O
tar -xf gcc-7.5.0.tar.gz
mkdir gcc-7.5.0-build && cd gcc-7.5.0-build
../gcc-7.5.0/configure --enable-languages=c,c++ --disable-bootstrap --disable-multilib --prefix=/usr/local
make -j$(nproc)
sudo make install-strip
If the updated compiler and libraries need to be deployed on several machines, you can copy them from under /usr/local
to other machines. If only the runtime libraries are needed, then the files in /usr/local/lib64
are enough.
Environment settings
Run the following commands to complete the configuration:
# Add updated C/C++ runtimes to the library path
# (this is required for any development/testing with Speech SDK)
export LD_LIBRARY_PATH=/usr/local/lib64:$LD_LIBRARY_PATH
# For C++ development only:
# - add the updated compiler to PATH
# (note, /usr/local/bin should be already first in PATH on vanilla systems)
# - add Speech SDK libraries from the Linux tar package to LD_LIBRARY_PATH
# (note, use the actual path to extracted files!)
export PATH=/usr/local/bin:$PATH
hash -r # reset cached paths in the current shell session just in case
export LD_LIBRARY_PATH=/path/to/extracted/SpeechSDK-Linux-<version>/lib/centos7-x64:$LD_LIBRARY_PATH
Note
The Linux .tar package contains specific libraries for RHEL/CentOS 7. These are in lib/centos7-x64
as shown in the environment setting example for LD_LIBRARY_PATH
above. Speech SDK libraries in lib/x64
are for all the other supported Linux x64 distributions (including RHEL/CentOS 8) and don't work on RHEL/CentOS 7.
Next steps
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