Tiny Core Linux

General TC => Programming & Scripting - Unofficial => Topic started by: halma on July 18, 2014, 07:51:30 AM

Title: Question to the Compiler FLAG "Os"
Post by: halma on July 18, 2014, 07:51:30 AM

hi ;-)

i have an question to the compiler flag "Os" 

gcc.gnu.org says the compiler flag "Os" is --->  "Optimize for size"

so my question is:
while i try to comile the xen-tools, so long i use the "Os" flag i run into compiler error ..  is the "Os" really needed and if i dont use it is it just the binary Size what is not optimized or  may arise, other disadvantages ?

thats the reason why i am asking:
http://lists.xenproject.org/archives/html/xen-users/2014-07/msg00303.html

thanks all
best regards
Halma

Title: Re: Question to the Compiler FLAG "Os"
Post by: Juanito on July 18, 2014, 09:05:51 AM

The idea is that tc should be as small as possible, but if "-Os" doesn't work, you can either omit it or use "-O2".

Title: Re: Question to the Compiler FLAG "Os"
Post by: halma on July 18, 2014, 09:36:57 AM

hi juanito

thanks for the reply .. ok let me try what -02 will produce ...

many thanks
best regards
Halma

Title: Re: Question to the Compiler FLAG "Os"
Post by: halma on July 18, 2014, 10:05:22 AM

great juanito the "O2" compiler flag seems to be working ;-)

thank you very much
best regards
Halma