[CMake] CMAKE_SYSROOT

[dbegun]

I am cross-compiling some code for ARM on an x86 host with cmake 3.5.1. The code has multiple dependencies, and I placed relevant cross-compiled libraries in /home/dev/arm_build. I was hoping that specifying CMAKE_SYSROOT=/home/dev/arm_build in my CMAKE_TOOLCHAIN_FILE would prefix it to the search path of the find_* commands, so I won't have to modify existing Find*.cmake files. However, when I do that, cmake is unable to locate the compiler's libc files (my compiler also resides in /home/dev/arm_build) and is unable to compile a test program, not finding crt1.o, crti.o etc. Without specifying CMAKE_SYSROOT things work, it's just that I have to edit the Find*.cmake files. I can live with that, but any suggestions?

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