[PATCH] devtool: Fix source extraction for gcc shared source

["Tomasz Dziendzielski" <tomasz.dziendzielski@gmail.com>]

If do_patch task is disabled then prepare do_configure dependencies to
fetch external sources and create symlink to ${S} in devtool workspace.

[YOCTO #13036]

Signed-off-by: Tomasz Dziendzielski <tomasz.dziendzielski@gmail.com>
---
 .../gcc/gcc-shared-source.inc                 |  1 +
 scripts/lib/devtool/standard.py               | 30 ++++++++++++++++---
 2 files changed, 27 insertions(+), 4 deletions(-)

diff --git a/meta/recipes-devtools/gcc/gcc-shared-source.inc b/meta/recipes-devtools/gcc/gcc-shared-source.inc
index aac4b49313..9ef80f2074 100644
--- a/meta/recipes-devtools/gcc/gcc-shared-source.inc
+++ b/meta/recipes-devtools/gcc/gcc-shared-source.inc
@@ -2,6 +2,7 @@ do_fetch() {
 	:
 }
 do_fetch[noexec] = "1"
+do_patch[noexec] = "1"
 deltask do_unpack
 deltask do_patch
 
diff --git a/scripts/lib/devtool/standard.py b/scripts/lib/devtool/standard.py
index 261d642d4a..8b80fb8bfa 100644
--- a/scripts/lib/devtool/standard.py
+++ b/scripts/lib/devtool/standard.py
@@ -589,6 +589,16 @@ def _extract_source(srctree, keep_temp, devbranch, sync, config, basepath, works
             else:
                 task = 'do_patch'
 
+                if 'noexec' in (d.getVarFlags(task, False) or []):
+                    logger.info('The %s recipe has %s disabled. Running only '
+                                       'do_configure task dependencies' % (pn, task))
+
+                    if 'depends' in d.getVarFlags('do_configure', False):
+                        pn = d.getVarFlags('do_configure', False)['depends']
+                        pn = pn.replace('${PV}', d.getVar('PV'))
+                        pn = pn.replace('${COMPILERDEP}', d.getVar('COMPILERDEP'))
+                        task = None
+
             # Run the fetch + unpack tasks
             res = tinfoil.build_targets(pn,
                                         task,
@@ -600,6 +610,17 @@ def _extract_source(srctree, keep_temp, devbranch, sync, config, basepath, works
         if not res:
             raise DevtoolError('Extracting source for %s failed' % pn)
 
+        if 'noexec' in (d.getVarFlags('do_patch', False) or []):
+            workshareddir = d.getVar('S')
+            if os.path.islink(srctree):
+                os.unlink(srctree)
+
+            os.symlink(workshareddir, srctree)
+
+            # The initial_rev file is created in devtool_post_unpack function that will not be executed if
+            # do_unpack/do_patch tasks are disabled so we have to directly say that source extraction was successful
+            return True, True
+
         try:
             with open(os.path.join(tempdir, 'initial_rev'), 'r') as f:
                 initial_rev = f.read()
@@ -847,10 +868,11 @@ def modify(args, config, basepath, workspace):
             if not initial_rev:
                 return 1
             logger.info('Source tree extracted to %s' % srctree)
-            # Get list of commits since this revision
-            (stdout, _) = bb.process.run('git rev-list --reverse %s..HEAD' % initial_rev, cwd=srctree)
-            commits = stdout.split()
-            check_commits = True
+            if os.path.exists(os.path.join(srctree, '.git')):
+                # Get list of commits since this revision
+                (stdout, _) = bb.process.run('git rev-list --reverse %s..HEAD' % initial_rev, cwd=srctree)
+                commits = stdout.split()
+                check_commits = True
         else:
             if os.path.exists(os.path.join(srctree, '.git')):
                 # Check if it's a tree previously extracted by us. This is done
-- 
2.29.2