From: Marek Vasut Date: Thu, 26 May 2016 16:01:47 +0000 (+0200) Subject: lib: Enable private libgcc by default X-Git-Tag: v2016.07-rc1~42 X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=91b86e21564de01c0e3deafc72702897993d63ae;p=oweals%2Fu-boot.git lib: Enable private libgcc by default This patch decouples U-Boot binary from the toolchain on systems where private libgcc is available. Instead of pulling in functions provided by the libgcc from the toolchain, U-Boot will use it's own set of libgcc functions. These functions are usually imported from Linux kernel, which also uses it's own libgcc functions instead of the ones provided by the toolchain. This patch solves a rather common problem. The toolchain can usually generate code for many variants of target architecture and often even different endianness. The libgcc on the other hand is usually compiled for one particular configuration and the functions provided by it may or may not be suited for use in U-Boot. This can manifest in two ways, either the U-Boot fails to compile altogether and linker will complain or, in the much worse case, the resulting U-Boot will build, but will misbehave in very subtle and hard to debug ways. Signed-off-by: Marek Vasut Cc: Albert Aribaud Cc: Masahiro Yamada Cc: Simon Glass Cc: Tom Rini Reviewed-by: Tom Rini --- diff --git a/lib/Kconfig b/lib/Kconfig index 2b97c2b0a4..02ca4058d3 100644 --- a/lib/Kconfig +++ b/lib/Kconfig @@ -14,6 +14,7 @@ config HAVE_PRIVATE_LIBGCC config USE_PRIVATE_LIBGCC bool "Use private libgcc" depends on HAVE_PRIVATE_LIBGCC + default y if HAVE_PRIVATE_LIBGCC && ((ARM && !ARM64) || MIPS) help This option allows you to use the built-in libgcc implementation of U-Boot instead of the one provided by the compiler.