Improve autocompilation and associated readme

README.md

@@ -8,7 +8,7 @@ the GSPR loss function with a second-order polynomial.
 
 Prerequisite
 ------------
-This program uses the following libraries (tested with the following version):
+This program uses the following libraries (tested with the following version, but should work with other versions):
 * cython 0.29
 * numpy 1.21
 * scipy 1.7.1
@@ -17,6 +17,12 @@ This program uses the following libraries (tested with the following version):
 * pandas 1.3 (needed only for saving in a non CSV format)
 * tqdm 4.62 (optional if you want a progress bar)
 
+`c_corr.pyx` will automaticly be compiled at the first run of `gsrp_tdoa_hyperres.py`.
+In case the compilation fail, you can manually compile it with:
+```
+python cython_setup.py build_ext --inplace
+```
+
 Usage
 -----
 ```

gsrp_tdoa_hyperres.py

@@ -29,7 +29,7 @@ try:
 except ModuleNotFoundError:
     print(f'{BColors.WARNING}Unable to load c_corr. Attempting to recompile...{BColors.ENDC}')
     from subprocess import run
-    run('python cython_setup.py build_ext --inplace'.split())
+    run(f"python {os.path.join(os.path.dirname(__file__), 'cython_setup.py')} build_ext --inplace".split())
     import c_corr
     print(f'{BColors.OKGREEN}Done{BColors.ENDC}')
 try: