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Full Discussion: math.h in makefile
Top Forums Programming math.h in makefile Post 302236056 by kermit on Sunday 14th of September 2008 12:12:42 PM
Old 09-14-2008
Ok, sorry for the wasted space, in the previous post; I should have supplied more info in the OP.

Anyway, I was fiddling around with strtod, and I wanted to test against the macro HUGE_VALF, which I determined would require math.h being included. When I got a warning that HUGE_VALF was undeclared, I assumed that it was to do with linking the math headers (the old -lm thing) from make being a problem. As it turns out, it would appear that this macro is GNU specific, (?) and as such I needed to #define _ISOC99_SOURCE as well as use the -std=c99 flag while compiling...
 

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