Hi,
I have following questions and would appreciate any comment. Thanks you
very much.
1. How to build a debugable version of GCC? I tried to set CFLGAS &
CXXFLAGS to "-O0 -g -fno-inline" in my configure command line, but it seems it
doesn't work. I manually modify all the Makefiles in gcc sub-directories and
replace "-O2" with "-O0 -g", it is dumb but works. I guess there is a better
way that I am not aware of. Can anybody tell me how to do it?
2. during the "make" process, i noticed it enters
gcc-4.5.0/host-i686-pc-cygwin/gcc and build the same source files three times:
E.g. first time: gcc .././gcc/c-typeck.c -o c-typeck.o
2nd time: xgcc -O2 -gtoggle .././gcc/c-typeck.c -o c-typeck.o
3rd time: xgcc -O2 -DIN_GCC .././gcc/c-typeck.c -o c-typeck.o
Can anybody tells me what these compilation for? Seems that the first
one is building gcc, how about 2nd and 3rd one? thanks
3. what is libgcc and newlib for?
4. what are these directories for?
prev-i686-pc-cygwin/
stage1-i686-pc-cygwin/
5. what is libssp for? what is lto-plugin for?
thank you very much.
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