Allow installation with parametrisable backend language

README.md

@@ -77,6 +77,10 @@ Again, for more details we refer to our [documentation](https://pyccel.github.io
 > This gives the user access to a wide variety of linear solvers and other algorithms.
 > Instructions for installing [PETSc](https://petsc.org) and `petsc4py` can be found in our [documentation](https://pyccel.github.io/psydac/installation.html#id9).
 
+> [!TIP]
+> PSYDAC is installed with a Fortran backend by default however it is possible to request a different language backend by adding `-Csetup-args="-Dpyccel_language=<language>"` to the pip command (e.g. `-Csetup-args="-Dpyccel_language=c"`).
+> This is particularly useful if you want to use psydac in a project which also uses Pyccel for acceleration.
+
 ## Running Tests
 
 We strongly advice users and developers to run the test suite of PSYDAC to verify the correct installation on their machine (possibly a supercomputer).

meson.build

@@ -4,11 +4,20 @@ project(
   meson_version: '>=1.1.0',
 )
 
-run_command('pyccel', 'make', '-g', 'psydac/**/*_kernels.py', '--convert-only',
+pyccel_main_language = get_option('pyccel_language')
+
+message('Translating kernels to ' + pyccel_main_language)
+
+run_command('pyccel', 'make', '-g', 'psydac/**/*_kernels.py', '--convert-only', '--language=' + pyccel_main_language,
     check: true)
 
 find = find_program('find', required: true)
 
+# Python dependencies
+py = import('python').find_installation('/usr/bin/python3.13', modules: ['numpy'])
+cc = meson.get_compiler('c')
+m_dep = cc.find_library('m', required : false)
+
 pyccel_meson_math_file = run_command(find, '__pyccel__/math', '-name', 'meson.build',
     check: true).stdout().strip()
 pyccel_meson_cwrapper_file = run_command(find, '__pyccel__/cwrapper', '-name', 'meson.build',

meson.options

@@ -0,0 +1,2 @@
+option('pyccel_language', type : 'string', value : 'fortran', description : 'The language that Pyccel translates to [default: Fortran].')
+

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["meson-python", "pyccel >= 2.1.0"]
+requires = ["meson-python", "pyccel >= 2.2.2"]
 build-backend = "mesonpy"
 
 [project]
@@ -32,7 +32,7 @@ dependencies = [
 
     # Our packages from PyPi
     'sympde == 0.19.2',
-    'pyccel >= 2.1.0',
+    'pyccel >= 2.2.2',
     'gelato == 0.12',
 
     # MPI for Python provides Python bindings for the