fixing Sleef_Quad issue on Mac-Silicon

Author: SwayamInSync

.github/workflows/build_wheels.yml

@@ -127,8 +127,8 @@ jobs:
             MACOSX_DEPLOYMENT_TARGET="11.0"
             DYLD_LIBRARY_PATH="/usr/local/lib:$DYLD_LIBRARY_PATH"
             CFLAGS="-I/usr/local/include -I{project}/numpy_quaddtype/QBLAS/include $CFLAGS"
-            CXXFLAGS="-I/usr/local/include -I{project}/numpy_quaddtype/QBLAS/include $CXXFLAGS"
-            LDFLAGS="-L/usr/local/lib $LDFLAGS"
+            CXXFLAGS="-I/usr/local/include -I{project}/numpy_quaddtype/QBLAS/include -Xpreprocessor -fopenmp $CXXFLAGS"
+            LDFLAGS="-L/usr/local/lib -lomp $LDFLAGS"
             PKG_CONFIG_PATH="/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH"
           CIBW_REPAIR_WHEEL_COMMAND: >
             delocate-wheel --require-archs {delocate_archs} -w {dest_dir} -v {wheel}

quaddtype/meson.build

@@ -26,8 +26,15 @@ incdir_numpy = run_command(py,
 # Add OpenMP dependency (optional, for threading)
 openmp_dep = dependency('openmp', required: false)
 dependencies = [sleef_dep, py_dep]
-if openmp_dep.found()
+if build_machine.system() == 'darwin'
+  add_project_arguments('-Xpreprocessor', '-fopenmp', language : ['c', 'cpp'])
+  if openmp_dep.found()
     dependencies += openmp_dep
+  endif
+else
+  if openmp_dep.found()
+    dependencies += openmp_dep
+  endif
 endif
 
 includes = include_directories(

quaddtype/numpy_quaddtype/src/quadblas_interface.cpp

@@ -5,6 +5,8 @@
 #define NO_IMPORT_ARRAY
 #define NO_IMPORT_UFUNC
 
+#include "../QBLAS/include/quadblas/quadblas.hpp"
+
 extern "C" {
 #include <Python.h>
 #include "numpy/arrayobject.h"
@@ -17,8 +19,6 @@ extern "C" {
 #include "quad_common.h"
 #include "quadblas_interface.h"
 
-#include "../QBLAS/include/quadblas/quadblas.hpp"
-
 static QuadBLAS::Layout
 get_quadblas_layout(PyArrayObject *arr)
 {