Set "VCPKG_TARGET_TRIPLET" variable inside CMakeLists.txt

Question

I need to be able set VCPKG_TARGET_TRIPLET inside my CMakeLists.txt due to my setup (see my post here: Setting "-D" variables inside CMake) but I cannot get it working.

It works if I pass "x64-mingw-static" as a -D argument, but not if I set it manually. The packages are simply not found in this case.

Any thoughts?

score 1 · Answer 1 · answered Oct 15 '20 at 10:12

1

Try set(VCPKG_TARGET_TRIPLET <yourvalue> CACHE STRING "")

the behavior you observed was probably fixed by https://github.com/microsoft/vcpkg/pull/13713

and you used set(VCPKG_TARGET_TRIPLET <yourvalue>)

Be aware that changing the triplet in an already present cmake cache requires a complete clean reconfigure due to way cmake works.

answered Oct 15 '20 at 10:12

Alexander Neumann

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Note: This must be used before `project(...` – AntonioCS Jun 21 '22 at 07:31
@AntonioCS, Can you explain why we should add it before project? – Saeed Masoomi Aug 24 '22 at 20:10
Because the toolchain gets loaded with `project()`. If the variable is not set until then it won't be used. – Alexander Neumann Aug 24 '22 at 21:18

Set "VCPKG_TARGET_TRIPLET" variable inside CMakeLists.txt

1 Answers1