[gnome-continuous-yocto/gnomeostree-3.28-rocko: 7648/8267] go.bbclass: add GO_INSTALL_FILTEROUT variable

[Emmanuele Bassi <ebassi src gnome org>]

commit 245285e3be5996aa05542c52786cbb097e61f2d9
Author: Matt Madison <matt@madison.systems>
Date:   Fri Sep 8 18:04:42 2017 -0300

    go.bbclass: add GO_INSTALL_FILTEROUT variable
    
    When using the Go 'vendor' mechanism to bring in
    dependencies for a Go package, the default GO_INSTALL
    setting, which uses the '...' wildcard, will include
    the vendored packages in the build, which produces
    incorrect results.
    
    There are also some Go packages that are structured
    poorly, so that the '...' wildcard results in building
    example or test code that should not be included in
    the build, or fail to build.
    
    This patch adds a mechanism for filtering out a
    subset of the sources.  It defaults to filtering
    out everything under the 'vendor' subdirectory
    under package's main directory, which is the
    normal location for vendored packages, but can
    be overridden by a recipe to filter out other
    subdirectories, if needed.
    
    (From OE-Core rev: 9819353726d85780546158428bd97a253705017d)
    
    Signed-off-by: Matt Madison <matt@madison.systems>
    Signed-off-by: Otavio Salvador <otavio ossystems com br>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 meta/classes/go.bbclass |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)
---
diff --git a/meta/classes/go.bbclass b/meta/classes/go.bbclass
index c1ef01f..cb1e96d 100644
--- a/meta/classes/go.bbclass
+++ b/meta/classes/go.bbclass
@@ -52,6 +52,7 @@ FILES_${PN}-staticdev += "${GOSRC_FINAL}/${GO_IMPORT}"
 FILES_${PN}-staticdev += "${GOPKG_FINAL}/${GO_IMPORT}*"
 
 GO_INSTALL ?= "${GO_IMPORT}/..."
+GO_INSTALL_FILTEROUT ?= "${GO_IMPORT}/vendor/"
 
 B = "${WORKDIR}/build"
 
@@ -73,6 +74,11 @@ python go_do_unpack() {
         raise bb.build.FuncFailed(e)
 }
 
+go_list_packages() {
+       GOPATH=${B}:${STAGING_LIBDIR}/${TARGET_SYS}/go go list -f '{{.ImportPath}}' ${GOBUILDFLAGS} 
${GO_INSTALL} | \
+               egrep -v '${GO_INSTALL_FILTEROUT}'
+}
+
 go_do_configure() {
        ln -snf ${S}/src ${B}/
 }
@@ -80,7 +86,7 @@ go_do_configure() {
 go_do_compile() {
        GOPATH=${B}:${STAGING_LIBDIR}/${TARGET_SYS}/go go env
        if [ -n "${GO_INSTALL}" ]; then
-               GOPATH=${B}:${STAGING_LIBDIR}/${TARGET_SYS}/go go install ${GOBUILDFLAGS} ${GO_INSTALL}
+               GOPATH=${B}:${STAGING_LIBDIR}/${TARGET_SYS}/go go install ${GOBUILDFLAGS} `go_list_packages`
        fi
 }
 do_compile[cleandirs] = "${B}/bin ${B}/pkg"