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dev-manual: use actual machine override demonstration

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Given that the section in question is describing how to configure
dependencies based on the machine type, it seems inappropriate to use
an example that depends on the choice of C library, so grab a snippet
from linux-yocto.inc to really drive the point home.

(From yocto-docs rev: 66bfec015f61a690f96cf8e28b80869c77327e6d)

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
rpjday@crashcourse.ca
2020-03-28 16:35:00 -04:00
committed by Richard Purdie
parent 0bcf88c375
commit 5f6e055dc8
1 changed files with 19 additions and 5 deletions
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documentation/dev-manual/dev-manual-common-tasks.xml
+19 -5
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@@ -319,12 +319,26 @@
DEPENDS_append_one = " foo"
DEPENDS_prepend_one = "foo "
</literallayout>
As an actual example, here's a line from the recipe
for gnutls, which adds dependencies on
"argp-standalone" when building with the musl C
library:
As an actual example, here's a snippet from the
generic kernel include file
<filename>linux-yocto.inc</filename>,
wherein the kernel compile and link options are
adjusted in the case of a subset of the supported
architectures:
<literallayout class='monospaced'>
DEPENDS_append_libc-musl = " argp-standalone"
DEPENDS_append_aarch64 = " libgcc"
KERNEL_CC_append_aarch64 = " ${TOOLCHAIN_OPTIONS}"
KERNEL_LD_append_aarch64 = " ${TOOLCHAIN_OPTIONS}"
DEPENDS_append_nios2 = " libgcc"
KERNEL_CC_append_nios2 = " ${TOOLCHAIN_OPTIONS}"
KERNEL_LD_append_nios2 = " ${TOOLCHAIN_OPTIONS}"
DEPENDS_append_arc = " libgcc"
KERNEL_CC_append_arc = " ${TOOLCHAIN_OPTIONS}"
KERNEL_LD_append_arc = " ${TOOLCHAIN_OPTIONS}"
KERNEL_FEATURES_append_qemuall=" features/debug/printk.scc"
</literallayout>
<note>
Avoiding "+=" and "=+" and using