Hi, > Am 17.12.2018 um 21:18 schrieb Kyle Edwards via cmake-developers > <cmake-developers@cmake.org>: > > Then, executables and libraries could have a toolchain specified: > > add_executable(BuildUtility TOOLCHAIN DEFAULT ...) > add_library(MyLibrary TOOLCHAIN CrossToolchain …)
or even toolchains:
add_library(feature1 TOOLCHAINS CrossToolChain HostToolChain)
add_executable(Firmware TOOLCHAIN CrossToolChain)
target_link_libraries(Firmware feature1)
add_executable(Test_Feature1 TOOLCHAIN HostToolChain)
target_link_libraries(Test_Feature1 feature1)
A nice feature would be to let toolchain propagate along the dependency graph
defined by `target_link_libraries`. So in the example above, the TOOLCHAINS
option to `add_library` would be optional, because the target Firmware requires
feature1 to be build with CrossToolChain and Test_Feature1 to be build with
HostToolChain. Which requires the build to have different binary directories
for every toolchain. (Which for me is an indication that having
multidimensional build types would be the more natural way to go)
What I’m still missing is support to define dependencies between different
targets (build by different toolchains), so that I can describe that I require
a tool that is build with the HostToolChain, to generate a file that is
required by the part of the build, that is using the CrossToolChain. And, of
cause, if the source of that tool changes, that tool have to be rebuild and the
generated file from the CrossToolChain part of the build have to be rebuild.
best regards,
Torsten
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