105 lines
3.1 KiB
TeX
105 lines
3.1 KiB
TeX
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\subsection{Cross-Compilation, Toolchain files}
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\begin{frame}
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\frametitle{Cross-compilation}
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\begin{center}
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\huge Dealing with different platforms
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\end{center}
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\end{frame}
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%--------------------------------------------------------------------------------------------------
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\begin{frame}
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\frametitle{Cross-Compilation, Concepts}
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Building binaries for a platform other than the one on which the
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compiler runs.
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\vspace{1em}
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\textbf {Host Platform} \\
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{\info {Platform/System \textbf {ON} which the binaries are built, compiler(cross-compiler) runs.}}
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\vspace{1em}
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\textbf{Target Platform} \\
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{\info {Platform \textbf {FOR} which the binaries are built.}}
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\end{frame}
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%--------------------------------------------------------------------------------------------------
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\begin{frame}
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\frametitle{Cross-Compilation, Concepts}
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\textbf {Toolchain}\\
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{\info {Set of tools and libraries to built binaries for a target platform, such as:}
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\begin{itemize}
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\item Binutils
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\item Cross Compiler
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\item C Library
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\item Debugger
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\end{itemize}
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}
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\end{frame}
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%--------------------------------------------------------------------------------------------------
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\begin{frame}
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\frametitle{CMake \& Cross-Compilation}
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CMake needs help to recognize Cross-Compilation, e.g.\\
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\begin{itemize}
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\item Target System Name
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\item Cross Compiler Location
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\item Library Search Paths
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\item etc.
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\end{itemize}
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\end{frame}
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%--------------------------------------------------------------------------------------------------
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\begin{frame}
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\frametitle{CMake \& Cross-Compilation}
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\textbf {Toolchain Files} - CMake Script enclosing toolchain info.
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E.g.:
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\begin{itemize}
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\item Target System Name -- {\code CMAKE\_SYSTEM\_NAME}
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\item Cross-Compiler to be used -- {\code CMAKE\_C\_COMPILER}
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\item Library and Package search root -- {\code {CMAKE\_FIND\_ROOT\_PATH}}
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\item Default compiler and linker flags specific to the target platform
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\end{itemize}
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{\info {\code {CMAKE\_TOOLCHAIN\_FILE}} used to provide toolchain file location}
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\end{frame}
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%--------------------------------------------------------------------------------------------------
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\begin{frame}
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\frametitle{CMake \& Cross-Compilation}
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System introspection is still possible while cross-compiling:
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\begin{itemize}
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\item {\code {try\_compile}} - works as expected
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\item {\code {try\_run}} - limited functionality, run phase is usually skipped
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\end{itemize}
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\end{frame}
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%--------------------------------------------------------------------------------------------------
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\note{
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What is cross-compilation
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HOST, TARGET, compilers
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Toolchain files
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- meaning and content
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Cross compilation with cmake
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- CMAKE Variables
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- Searching \& finding packages
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- toolchain files
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- system introspection (try-compile, try-run)
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- HOST-TOOLS, why might be required
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- Using Executables in the build created during the build
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}
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