Ensure that all the flags are really passed to CMake

conda/meta.yaml

@@ -3,7 +3,7 @@ package:
   version: "1.2.3"
 
 source:
-  git_rev: 03033b6
+  git_rev: 793134d
   git_url: https://bitbucket.org/glavaux/cosmotool
 
 requirements:
@@ -14,6 +14,8 @@ requirements:
     - numpy                                  # [build_platform != target_platform]
     - {{ compiler('c') }}
     - {{ compiler('cxx') }}
+    - llvm-openmp                            # [osx]
+    - libgomp                                # [linux]
 
   host:
     - python
@@ -36,6 +38,7 @@ requirements:
     - pyfftw
     - h5py
     - {{ pin_compatible('gsl') }}
+    - llvm-openmp
 
 test:
   imports:

setup.py

@@ -168,10 +168,16 @@ class BuildCMakeExt(build_ext):
         # Below is just an example set of arguments for building Blender as a Python module
 
         compilers=[]
-        if "CC" in os.environ:
+        fill_up_settings=[
-           compilers.append('-DCMAKE_C_COMPILER=' + os.environ["CC"])
+              ("CMAKE_C_COMPILER", "CC"),
-        if "CXX" in os.environ:
+              ("CMAKE_CXX_COMPILER", "CXX"),
-           compilers.append("-DCMAKE_CXX_COMPILER=" + os.environ["CXX"])
+              ("CMAKE_C_FLAGS", "CFLAGS"),
+              ("CMAKE_EXE_LINKER_FLAGS_INIT", "LDFLAGS"),
+              ("CMAKE_SHARED_LINKER_FLAGS_INIT", "LDFLAGS"),
+              ("CMAKE_MODULE_LINKER_FLAGS_INIT", "LDFLAGS")]
+        for cmake_flag, os_flag:
+          if os_flag in os.environ:
+             compilers.append(f"-D{cmake_flag}={os.environ[os_flag]}")
 
         self.spawn(['cmake', '-H'+SOURCE_DIR, '-B'+self.build_temp,
                     '-DENABLE_OPENMP=ON','-DINTERNAL_BOOST=ON','-DINTERNAL_EIGEN=ON',