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README.md: added a bit more compilation help

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Pablo Lopez Rios 2022-01-18 14:38:48 +00:00
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@ -26,8 +26,9 @@ TREX library for efficient I/O.
7. `sudo make install` 7. `sudo make install`
**Note: on systems with no `sudo` access, one can replace `./configure` with `./configure prefix=${PWD}/_install` in order to execute `make install/uninstall` commands without `sudo` privileges.** **Note: on systems with no `sudo` access, one can replace `./configure` with `./configure prefix=${PWD}/build` in order to execute `make install/uninstall` commands without `sudo` privileges.**
**Note: when linking against an MPI-enabled HDF5 library one usually has to specify the MPI wrapper for the C compiler by adding, e.g., `CC=mpicc` to the `./configure` command.**
## Additional requirements (for developers): ## Additional requirements (for developers):
@ -56,6 +57,10 @@ The aforementioned instructions rely on [Autotools](https://www.gnu.org/software
4. `ctest` (or `make test`) 4. `ctest` (or `make test`)
5. `sudo make install` 5. `sudo make install`
**Note: on systems with no `sudo` access, one can add `-DCMAKE_INSTALL_PREFIX=build` as an argument to the `cmake` command so that `make install/uninstall` can be run without `sudo` privileges.**
**Note: when linking against an MPI-enabled HDF5 library one usually has to specify the MPI wrapper for the C compiler by adding, e.g., `-DCMAKE_C_COMPILER=mpicc` to the `cmake` command.**
## Compilation without the HDF5 library ## Compilation without the HDF5 library
By default, the configuration step proceeds to search for the [HDF5 library](https://portal.hdfgroup.org/display/HDF5/HDF5). By default, the configuration step proceeds to search for the [HDF5 library](https://portal.hdfgroup.org/display/HDF5/HDF5).