colorer @take5.be5_2: error: redefinition of 'log' as different kind of symbol

[cooljeanius (Eric Gallager)]

Seems to be some sort of issue with variable naming and/or header inclusion:

../shared//./common/Logging.cpp:13:14: error: redefinition of 'log' as different kind of symbol
static FILE *log = 0;
             ^
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/math.h:1003:1: note: previous definition is here
log(_A1 __lcpp_x) _NOEXCEPT {return ::log((double)__lcpp_x);}
^
../shared//./common/Logging.cpp:19:10: error: reference to overloaded function could not be resolved; did you mean to call it?
  while (log == 0 && idx < 10){
         ^~~
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/math.h:1003:1: note: possible target for call
log(_A1 __lcpp_x) _NOEXCEPT {return ::log((double)__lcpp_x);}
^
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/math.h:997:46: note: possible target for call
inline _LIBCPP_INLINE_VISIBILITY long double log(long double __lcpp_x) _NOEXCEPT {return ::logl(__lcpp_x);}
                                             ^
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/math.h:996:46: note: possible target for call
inline _LIBCPP_INLINE_VISIBILITY float       log(float __lcpp_x) _NOEXCEPT       {return ::logf(__lcpp_x);}
                                             ^
/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/math.h:373:15: note: possible target for call
extern double log(double);
              ^

Full error output is kinda long; I'll attach logs.

[cooljeanius (Eric Gallager)]

terminal output from attempting to build colorer

[cooljeanius (Eric Gallager)]

main.log for colorer

[ryandesign (Ryan Carsten Schmidt)]

In a4d2173287425013bd226e3a3aaa46c77895247f/macports-ports (master):

colorer: Rename log variable to avoid build failure

In newer toolchains, <math.h> seems to get included into this source
file automatically, causing a problem when its log function conflicts
with this file's log variable. Rename the variable to avoid that.

Closes: #62397