## How Can CMake Handle Multiple Compilers for the Same Language?

Overcoming the Single Compiler Limitation in CMake

CMake poses a challenge when working with multiple compilers for the same language, as it designates a single compiler for all C source files. This exclusivity creates difficulties in blending host-and-cross compiling within a solitary CMakeLists.txt.

Exploring Multiple Compiler Options

Despite extensive exploration, it's evident that CMake inherently supports only one set of compiler properties shared amongst all targets. This means that different targets employ the same compiler, which can be a hindrance in situations that demand various compilers for the same language.

To circumvent this limitation, the most straightforward method is to execute CMake multiple times. However, this approach can be cumbersome, even when compiling different architectures (e.g., 32-bit and 64-bit) with the same compiler toolchain.

An alternative, though less desirable, solution is to utilize custom commands. This technique effectively creates elaborate shell scripts and often falls short of providing the desired level of structure.

Separation and Integration

The most elegant solution is to separate the compilation processes into distinct CMakeLists.txt files. This approach eliminates the need for linking between different architectures and allows for shared elements to be extracted into separate files for inclusion in various CMake scripts.

While this strategy sacrifices the convenience of single-command builds, it opens the door for customized scripts that invoke the individual CMake-makefiles. By effectively separating the concerns of building with different compilers, this method preserves clarity and efficiency.

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