dev-manual: use actual machine override demonstration

Submitted by Robert P. J. Day on March 28, 2020, 8:35 p.m. | Patch ID: 171391

Details

Message ID alpine.LFD.2.21.2003281633070.6139@localhost.localdomain
State New
Headers show

Commit Message

Robert P. J. Day March 28, 2020, 8:35 p.m. 
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.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>

---

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diff --git a/documentation/dev-manual/dev-manual-common-tasks.xml b/documentation/dev-manual/dev-manual-common-tasks.xml
index ac761df2a..32da79a89 100644
--- a/documentation/dev-manual/dev-manual-common-tasks.xml
+++ b/documentation/dev-manual/dev-manual-common-tasks.xml
@@ -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