Fix breathe parsing errors

sphinx_docs/Doxyfile

@@ -839,7 +839,7 @@ EXCLUDE_SYMLINKS       = NO
 # Note that the wildcards are matched against the file with absolute path, so to
 # exclude all test directories for example use the pattern */test/*
 
-EXCLUDE_PATTERNS       = util/autodiff/* util/gcem/* util/skynet/* */tmp_build_dir/*
+EXCLUDE_PATTERNS       = */util/autodiff/* */util/gcem/* */util/skynet/* */tmp_build_dir/*
 
 # The EXCLUDE_SYMBOLS tag can be used to specify one or more symbol names
 # (namespaces, classes, functions, etc.) that should be excluded from the
@@ -2009,15 +2009,15 @@ ENABLE_PREPROCESSING   = YES
 # The default value is: NO.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-MACRO_EXPANSION        = NO
+MACRO_EXPANSION        = YES
 
 # If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES then
 # the macro expansion is limited to the macros specified with the PREDEFINED and
 # EXPAND_AS_DEFINED tags.
 # The default value is: NO.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-EXPAND_ONLY_PREDEF     = NO
+EXPAND_ONLY_PREDEF     = YES
 
 # If the SEARCH_INCLUDES tag is set to YES, the include files in the
 # INCLUDE_PATH will be searched if a #include is found.
@@ -2049,7 +2049,15 @@ INCLUDE_FILE_PATTERNS  =
 # recursively expanded use the := operator instead of the = operator.
 # This tag requires that the tag ENABLE_PREPROCESSING is set to YES.
 
-PREDEFINED             =
+# breathe barfs on these when trying to parse function definitions
+# see https://github.com/breathe-doc/breathe/issues/905
+PREDEFINED             = AMREX_GPU_DEVICE= \
+                         AMREX_GPU_HOST_DEVICE= \
+                         AMREX_GPU_MANAGED= \
+                         AMREX_INLINE= \
+                         AMREX_FORCE_INLINE= \
+                         AMREX_FLATTEN= \
+                         AUTODIFF_DEVICE_FUNC=
 
 # If the MACRO_EXPANSION and EXPAND_ONLY_PREDEF tags are set to YES then this
 # tag can be used to specify a list of macro names that should be expanded. The