From: "Lubomir I. Ivanov" <neolit...@gmail.com> The introduction of -std=c++11 breaks usage of M_PI in Mingw, but technically M_PI is not standard C or C++.
Defining M_PI in units.h solves the issue. Signed-off-by: Lubomir I. Ivanov <neolit...@gmail.com> --- the Mingw math.h header does have the _USE_MATH_DEFINES macro check and it's one of the ways to get M_PI defined. so, i've tried doing it the proper way: -- #define _USE_MATH_DEFINES -- #include <math.h> ..in all locations where we have <math.h> and M_PI, but it doesn't work! something, somehwhere is undefining _USE_MATH_DEFINES and i don't have a good solution. --- subsurface-core/units.h | 3 +++ 1 file changed, 3 insertions(+) diff --git a/subsurface-core/units.h b/subsurface-core/units.h index 1273bd9..9d1b0fc 100644 --- a/subsurface-core/units.h +++ b/subsurface-core/units.h @@ -2,6 +2,9 @@ #define UNITS_H #include <math.h> +#ifndef M_PI +#define M_PI 3.14159265358979323846 +#endif #ifdef __cplusplus extern "C" { -- 1.7.11.msysgit.0 _______________________________________________ subsurface mailing list subsurface@subsurface-divelog.org http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface