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CFLAGS vs CPPFLAGS

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The implicit make rule for compiling a C program is %.o:%.c $(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $< where the $() syntax expands the variables. As both CPPFLAGS and CFLAGS are used in the compiler call, which you use to define include paths is a matter of personal taste. For instance if foo.c is a … Read more

What’s the difference of “./configure” option “–build”, “–host” and “–target”?

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As noted in this blog post and alluded to in the GCC Configure Terms, –target only applies when you are compiling toolchains. When you are doing normal cross-compilation of a library or binary you use –build=the architecture of the build machine –host=the architecture that you want the file to run on However, when you are … Read more

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