From: Matt Madison <matt@madison.systems>

Go source trees have a particular structure, with all
sources located under ${GOROOT}/src/<import-path>.
The fetcher step implemented by the 'go get' command
automatically follows this structure, so we need
to do the same here.

Since most Go packages are hosted in git repositories,
this adds a custom do_unpack() function that sets
the destsuffix to match the expected directory structure,
for any git SRC_URIs that haven't had a destsuffix
explicitly set in the recipe.

This simplifies recipe writing for the most common
cases.

Signed-off-by: Matt Madison <matt@madison.systems>
Signed-off-by: Otavio Salvador <ota...@ossystems.com.br>
---

Changes in v5: None
Changes in v4: None
Changes in v3:
- new patch

Changes in v2: None

 meta/classes/go.bbclass | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/meta/classes/go.bbclass b/meta/classes/go.bbclass
index cfe773e13d..c1ef01fafe 100644
--- a/meta/classes/go.bbclass
+++ b/meta/classes/go.bbclass
@@ -55,6 +55,24 @@ GO_INSTALL ?= "${GO_IMPORT}/..."
 
 B = "${WORKDIR}/build"
 
+python go_do_unpack() {
+    src_uri = (d.getVar('SRC_URI') or "").split()
+    if len(src_uri) == 0:
+        return
+
+    try:
+        fetcher = bb.fetch2.Fetch(src_uri, d)
+        for url in fetcher.urls:
+            if fetcher.ud[url].type == 'git':
+                if fetcher.ud[url].parm.get('destsuffix') is None:
+                    s_dirname = os.path.basename(d.getVar('S'))
+                    fetcher.ud[url].parm['destsuffix'] = 
os.path.join(s_dirname, 'src',
+                                                                      
d.getVar('GO_IMPORT')) + '/'
+        fetcher.unpack(d.getVar('WORKDIR'))
+    except bb.fetch2.BBFetchException as e:
+        raise bb.build.FuncFailed(e)
+}
+
 go_do_configure() {
        ln -snf ${S}/src ${B}/
 }
@@ -79,4 +97,4 @@ go_do_install() {
        fi
 }
 
-EXPORT_FUNCTIONS do_configure do_compile do_install
+EXPORT_FUNCTIONS do_unpack do_configure do_compile do_install
-- 
2.14.1

-- 
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