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Makefiles generated by cmake use a series of nested calls to build `*.provides.build` targets that are used when the 'requires' step is needed. That leads to significant degradation of the build time for incremental builds. Re-arrange dependencies to eliminate the nested calls. Explicit `.mod.stamp` targets introduced by this commit could lead to situation when a stamp file always older than its dependency. This happens during the incremental build when building of an updated Fortran source produces a module file that has no differences from the stored stamp file. In such case `cmake_copy_f90_mod` will be triggered on each new build to compare a module file with the corresponding stamp file. This behavior is expected and can not be changed without nested calls that slow down the build. The copy-if-different check is much cheaper than an entire nested make call.
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