Merge pull request #82 from GRTLCollaboration/enhancement/common_tmp_…

…build_dir

Build: Remove default `TMP_BUILD_DIR`

README.md

@@ -122,10 +122,28 @@ processes, do
 ```bash
 make -j 4
 ```
-A new `tmp_build_dir` directory will be created under `~/GRTeclyn` to store the
-compiled object and auxiliary files. Assuming all is well, you should have an
-executable in the current directory of the form `main<config>.ex` e.g.
-`main3d.gnu.MPI.OMP.ex`.
+A new `tmp_build_dir` directory will be created to store the compiled object and
+auxiliary files. Assuming all is well, you should have an executable in the
+current directory of the form `main<config>.ex` e.g. `main3d.gnu.MPI.OMP.ex`.
+
+If you want to clean the current build configuration you can do
+```bash
+make cleanconfig
+```
+Note that this is similar to `make clean` for GRChombo examples.
+
+If you want to clean all build configuration, you can do
+```bash
+make clean
+```
+Note that this is similar to `make realclean` for GRChombo examples.
+
+To speed up subsequent compilations, you can install
+[Ccache](https://ccache.dev/) and then add
+```
+USE_CCACHE = TRUE
+```
+to your `Make.local-pre` configuration file.
 
 ## Running the code
 

Tools/GNUMake/Make.defaults

@@ -23,9 +23,4 @@ DIM = 3
 BL_NO_FORT = TRUE
 AMREX_NO_PROBINIT = TRUE
 
-CXXSTD = c++17
-
-GRTECLYN_HOME ?= $(realpath ../..)
-
-# Use a common temporary build directory for all GRTeclyn applications
-TMP_BUILD_DIR ?= $(GRTECLYN_HOME)/tmp_build_dir
+CXXSTD = c++17