[OE-core] [PATCH v4 1/8] go-cross: avoid libgcc dependency

[Patrick Ohly]

libgcc gets compiled differently depending on the tune flags for the
target. That dependency would make go-cross also tune specific and
prevent sharing it between different machines using the same
architecture.

For example, MACHINE=intel-corei7-64 and MACHINE=qemux86-64 shared the
same go-cross-x86_64, but compiled libgcc differently.

The libgcc dependency gets inherited from go.inc, but does not seem to
be necessary for go-cross (compiling go-helloworld still succeeds).
The dependency is left in go.inc conditionally, just in case that it
really is relevant for the various on-target recipes which inherit
that.

Because go-cross*.bb includes go*.bb, moving the DEPENDS into a .inc
file that only gets included for the target recipes doesn't
work. Reshuffling the content of three .bb files seems too intrusive
at this point.

Signed-off-by: Patrick Ohly <patrick.ohly at intel.com>
---
 meta/recipes-devtools/go/go.inc | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/meta/recipes-devtools/go/go.inc b/meta/recipes-devtools/go/go.inc
index 5ccbf73..25437dd 100644
--- a/meta/recipes-devtools/go/go.inc
+++ b/meta/recipes-devtools/go/go.inc
@@ -1,6 +1,13 @@
 inherit goarch
-# libgcc is required for the target specific libraries to build properly
-DEPENDS += "go-bootstrap-native libgcc"
+DEPENDS += "go-bootstrap-native"
+
+# libgcc is required for the target specific libraries to build
+# properly, but apparently not for go-cross and, more importantly,
+# also can't be used there because go-cross cannot depend on
+# the tune-specific libgcc. Otherwise go-cross also would have
+# to be tune-specific.
+DEPENDS += "${@ 'libgcc' if not oe.utils.inherits(d, 'cross') else ''}"
+
 # Prevent runstrip from running because you get errors when the host arch != target arch
 INHIBIT_PACKAGE_STRIP = "1"
 INHIBIT_SYSROOT_STRIP = "1"
-- 
git-series 0.9.1