[cmake-developers] CMake 3.1 regression with incremental builds ?

[Clinton Stimpson]

Using the netcdf project
ftp://ftp.unidata.ucar.edu/pub/netcdf/netcdf-4.3.2.tar.gz

I see a problem with incremental builds doing a relink of libraries.  Within 
my project, this leads to unnecessarily relinking of many executables every 
time I run cmake.

For example:

tar zxf netcdf-4.3.2.tar.gz
cd netcdf-4.3.2
mkdir build
cd build
cmake ../
git init .
git add .
git commit -m"init"
cmake ../
git diff


These files have modifications in them which will lead to relinking.
liblib/CMakeFiles/netcdf.dir/build.make
liblib/CMakeFiles/netcdf.dir/link.txt

I see object files listed in a random order.  Perhaps there is a std::set used 
somewhere in CMake or something.

I do not see this behavior with CMake 3.0.2.

Clint