[ lame-Bugs-3480692 ] mingw-w64 compilation error

Bugs item #3480692, was opened at 2012-01-27 17:49
Message generated for change (Tracker Item Submitted) made by nu774
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Category: configure/Makefiles
Group: Portability
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: nu774 (nu774)
Assigned to: Nobody/Anonymous (nobody)
Summary: mingw-w64 compilation error

Initial Comment:
mingw-w64 compilation result in the following error. (I tried to cross compile on Linux box).

> vbrquantize.c:122:1: error: multiple storage classes in declaration specifiers
> vbrquantize.c:153:1: error: multiple storage classes in declaration specifiers
> vbrquantize.c:176:1: error: multiple storage classes in declaration specifiers
> vbrquantize.c:198:1: error: multiple storage classes in declaration specifiers
> vbrquantize.c:206:1: error: multiple storage classes in declaration specifiers

This is caused by FORCEINLINE macro, which seems to be in use only inside of vbrquantize.c.
"FORCEINLINE" is heavily used in MS Windows SDK headers, thus also in mingw headers.
By Windows SDK header definition, FORCEINLINE is evaluated to "__inline" (for non- MSVC compiler).
Then, by mingw-w64 header definition (_mingw.h), "__inline" is evaluated to 
"extern __inline__ __attribute__((__always_inline__,__gnu_inline__))"

Final declaration of the functions causing error are like the following:

extern __inline__ __attribute__((__always_inline__,__gnu_inline__)) static float
vec_max_c(const float * xr34, unsigned int bw)

Thus, storage class "extern" and "static" conflicts, and is causing compilation error.
If it is not intentional, please don't use macro name "FORCEINLINE".


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