Use special build option for wheel build

Author: vepadulano

bindings/CMakeLists.txt

@@ -17,7 +17,7 @@ if(pyroot)
   endif()
 endif()
 
-if(tpython)
+if(tpython AND NOT (DEFINED ROOT_WHEEL_BUILD AND ROOT_WHEEL_BUILD))
   add_subdirectory(tpython)
 endif()
 

cmake/modules/SearchInstalledSoftware.cmake

@@ -677,9 +677,13 @@ set(Python3_FIND_FRAMEWORK LAST)
 # Even if we don't build PyROOT, one still need python executable to run some scripts
 list(APPEND python_components Interpreter)
 if(pyroot OR tmva-pymva)
-  # We have to only look for the Python development module in order to be able to build ROOT with a pip backend
-  # In particular, it is forbidden to link against libPython.so, see https://peps.python.org/pep-0513/#libpythonx-y-so-1
-  list(APPEND python_components Development.Module)
+  if(DEFINED ROOT_WHEEL_BUILD AND ROOT_WHEEL_BUILD)
+    # We have to only look for the Python development module in order to be able to build ROOT with a pip backend
+    # In particular, it is forbidden to link against libPython.so, see https://peps.python.org/pep-0513/#libpythonx-y-so-1
+    list(APPEND python_components Development.Module)
+  else()
+    list(APPEND python_components Development)
+  endif()
 endif()
 if(tmva-pymva)
   list(APPEND python_components NumPy)
@@ -1776,7 +1780,7 @@ if(pyroot)
 endif()
 
 #---Check for TPython---------------------------------------------------------------------
-if(tpython)
+if(tpython AND NOT (DEFINED ROOT_WHEEL_BUILD AND ROOT_WHEEL_BUILD))
 
   if(NOT Python3_Development_FOUND)
     if(fail-on-missing)

setup.py

@@ -42,18 +42,16 @@ def run(self):
         _build.run(self)
 
         # Configure ROOT build
-        base_opts = shlex.split("cmake -GNinja -Dccache=ON")
-        mode_opts = shlex.split(
+        configure_command = shlex.split(
+            "cmake -GNinja -Dccache=ON "
+            "-Dgminimal=ON -Dasimage=ON -Dopengl=OFF "  # Graphics
+            "-Druntime_cxxmodules=ON -Drpath=ON -Dfail-on-missing=ON -DROOT_WHEEL_BUILD=ON "  # Generic build configuration
             "-Dbuiltin_nlohmannjson=ON -Dbuiltin_tbb=ON -Dbuiltin_xrootd=ON "  # builtins
             "-Dbuiltin_lz4=ON -Dbuiltin_lzma=ON -Dbuiltin_zstd=ON -Dbuiltin_xxhash=ON"  # builtins
-            "-Druntime_cxxmodules=ON -Drpath=ON -Dfail-on-missing=ON "  # Generic build configuration
-            "-Dgminimal=ON -Dasimage=ON -Dopengl=OFF "  # Graphics
             "-Dpyroot=ON -Ddataframe=ON -Dxrootd=ON -Dssl=ON -Dimt=ON "
-            "-Droofit=ON"
+            "-Droofit=ON "
+            f"-DCMAKE_INSTALL_PREFIX={INSTALL_DIR} -B {BUILD_DIR} -S {SOURCE_DIR}"
         )
-        dirs_opts = shlex.split(f"-DCMAKE_INSTALL_PREFIX={INSTALL_DIR} -B {BUILD_DIR} -S {SOURCE_DIR}")
-        configure_command = base_opts + mode_opts + dirs_opts
-        print(f"\n\n{' '.join(configure_command)}\n\n")
         subprocess.run(configure_command, check=True)
 
         # Run build with CMake