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6940a6c0eb
Refactor the contents of 'do_libc_start_files()' and 'do_libc()' into a parameterized 'do_libc_backend()'. 'do_libc_start_files()' and 'do_libc()' call 'do_libc_backend()' with either 'libc_mode=startfiles' or 'libc_mode=final' (respectively) so that the startfiles/headers and the final libc builds are configured and built with the same options. One example of where this is needed is when building a mips toolchain. Previously, if you were building an n32 toolchain, you wouldn't have noticed an issue, because if '-mabi' is not in CFLAGS, n32 is the default: http://sourceware.org/git/?p=glibc-ports.git;a=blob;f=sysdeps/mips/preconfigure;hb=HEAD But when trying to build an o32 or n64 toolchain the build would have failed. This is because (e)glibc expects "-mabi={o32,n32,n64}" to be in CFLAGS, but was not previously provided in 'do_libc_start_files()'. The build failure would happen in the shared-core gcc when it tries to configure an n64 or o32 gcc with an n32 libc. A simpler solution would have been to just add TARGET_CFLAGS to configure in 'do_libc_start_files()', but this way makes configure and make consistent for both steps. Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>