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arch: do not allow specifying both --with-arch and --with-cpu

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Normally, a specific CPU fully implies the architecture level. For
example, a cortec-a8 is forcibly an armv7, so spwecifying both is
redundant, and even dangerous (as incompatible values may be passed).

So far, gcc was pretty happy when both were specified at the same time,
and some time ago, it started being a warning, and only recently was it
turned into a hard error.

So, hide the architecture level prompt when a CPU has been specified.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
This commit is contained in:
Yann E. MORIN 2015-06-08 22:42:38 +02:00
parent 334c22a4cc
commit 8a2eb07cf1
1 changed files with 1 additions and 0 deletions
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config/target.in
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@ -196,6 +196,7 @@ config ARCH_ARCH
string
prompt "Architecture level"
depends on ARCH_SUPPORTS_WITH_ARCH
depends on ARCH_CPU = ""
default ""
help
GCC uses this name to determine what kind of instructions it can emit