https://llvm.org/bugs/show_bug.cgi?id=26128
Bug ID: 26128
Summary: libcxx fails to compile with newlib for cmath
functions
Product: libc++
Version: unspecified
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: All Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: rianqu...@gmail.com
CC: llvm-bugs@lists.llvm.org, mclow.li...@gmail.com
Classification: Unclassified
In libcxx/include/cmath, use see the following:
...
using ::isinf;
using ::isnan;
...
In NewLib, these functions are macros. Here is a comment from the NewLib
source:
/* Note: isinf and isnan were once functions in newlib that took double
* arguments. C99 specifies that these names are reserved for macros
* supporting multiple floating point types. Thus, they are
* now defined as macros. Implementations of the old functions
* taking double arguments still exist for compatibility purposes
* (prototypes for them are in <ieeefp.h>). */
Currently I am patching libcxx with #ifndef _NEWLIB_VERSION wrapped around a
couple of these functions (there are several that have this issue). Not sure
what the correct solution would be, but this seems reasonable to me.
- Rian
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