remove fast-math for python; put in a test; clean deps a bit

Author: beckermr

recipes/camb/Makefile.patch

@@ -7,7 +7,7 @@ index 6e8d822..af9cedc 100644
  SFFLAGS =  -shared -fPIC
 
 -FFLAGS =  -O3 -fopenmp -ffast-math -fmax-errors=4
-+FFLAGS =  -O3 -fopenmp -fmax-errors=4
++FFLAGS =  -O3 -fopenmp -fmax-errors=4 ${EXTRA_FFLAGS}
  DEBUGFLAGS = -cpp -g -fbounds-check -fbacktrace -ffree-line-length-none -fmax-errors=4 -ffpe-trap=invalid,overflow,zero
  MODOUT =  -J$(OUTPUT_DIR)
  SMODOUT = -J$(DLL_DIR)

recipes/camb/build.sh

@@ -1,6 +1,8 @@
 #!/bin/bash
 
-make camb
+EXTRA_FFLAGS=-ffast-math make camb
+
+make clean
 
 cd pycamb
 python setup.py build

recipes/camb/meta.yaml

@@ -24,7 +24,6 @@ build:
 requirements:
   build:
     - {{ compiler('c') }}
-    - {{ compiler('cxx') }}
     - {{ compiler('fortran') }}
     - git
     - make
@@ -37,11 +36,9 @@ outputs:
     script: install-pycamb.sh
     requirements:
       build:
+        # these are needed to convince conda-build to pin the requirements
         - {{ compiler('c') }}
-        - {{ compiler('cxx') }}
         - {{ compiler('fortran') }}
-        - git
-        - make
       host:
         - python
         - pip
@@ -67,11 +64,9 @@ outputs:
     script: install-camb.sh
     requirements:
       build:
+        # these are needed to convince conda-build to pin the requirements
         - {{ compiler('c') }}
-        - {{ compiler('cxx') }}
         - {{ compiler('fortran') }}
-        - git
-        - make
     test:
       files:
         - params.ini
@@ -80,7 +75,8 @@ outputs:
 
 about:
   home: https://camb.info/
-  license: LGPL
+  license: modified LGPL
+  license_family: LGPL
   license_file: {{ RECIPE_DIR }}/LICENSE
   summary: Code for Anisotropies in the Microwave Background
   description: |

recipes/camb/test_camb.py

@@ -1,6 +1,16 @@
 #!/use/bin/env python
+
+# check that we are not linking fast-math from fortran
+str_num_before = str(1e-323)
+print("before import:", str_num_before)
+
 import camb
 
+str_num_after = str(1e-323)
+print("after import:", str_num_after)
+
+assert str_num_before == str_num_after
+
 # run the code
 pars = camb.CAMBparams()
 pars.set_cosmology(