[PATCH v2] license_image.bbclass: report all packages with incompatible license

[martin.jansa@gmail.com]

From: Martin Jansa <martin.jansa@gmail.com>

When multiple packages cannot be installed it shows only first one it
finds, because of bb.fatal use. It might require many iterations to find
all packages to avoid.

e.g. with ptest enabled and GPL-3.0-or-later, GPL-3.0-only set as
incompatible licenses you might get list like this for relatively small
image:

ERROR: image-1.0-r0 do_rootfs: Some packages cannot be installed into the image because they have incompatible licenses:
        bzip2-ptest (GPL-3.0-or-later)
        coreutils (GPL-3.0-or-later)
        coreutils-stdbuf (GPL-3.0-or-later)
        diffutils (GPL-3.0-or-later)
        findutils (GPL-3.0-or-later)
        gawk (GPL-3.0-or-later)
        gnutls-openssl (GPL-3.0-or-later)
        gnutls-ptest (GPL-3.0-or-later)
        grep (GPL-3.0-only)
        make (GPL-3.0-only)
        mpfr (LGPL-3.0-or-later)
        python3-dbusmock (GPL-3.0-only)
        readline (GPL-3.0-or-later)
        sed (GPL-3.0-or-later)

Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
---
 meta/classes-recipe/license_image.bbclass | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/meta/classes-recipe/license_image.bbclass b/meta/classes-recipe/license_image.bbclass
index 8332905da5..95e0a9ba2e 100644
--- a/meta/classes-recipe/license_image.bbclass
+++ b/meta/classes-recipe/license_image.bbclass
@@ -116,6 +116,7 @@ def write_license_files(d, license_manifest, pkg_dic, rootfs):
     bad_licenses = oe.license.expand_wildcard_licenses(d, bad_licenses)
     pkgarchs = d.getVar("SSTATE_ARCHS").split()
     pkgarchs.reverse()
+    incompatible_packages = []
 
     exceptions = (d.getVar("INCOMPATIBLE_LICENSE_EXCEPTIONS") or "").split()
     with open(license_manifest, "w") as license_file:
@@ -123,7 +124,7 @@ def write_license_files(d, license_manifest, pkg_dic, rootfs):
             remaining_bad_licenses = oe.license.apply_pkg_license_exception(pkg, bad_licenses, exceptions)
             incompatible_licenses = oe.license.incompatible_pkg_license(d, remaining_bad_licenses, pkg_dic[pkg]["LICENSE"])
             if incompatible_licenses:
-                bb.fatal("Package %s cannot be installed into the image because it has incompatible license(s): %s" %(pkg, ' '.join(incompatible_licenses)))
+                incompatible_packages.append("%s (%s)" % (pkg, ' '.join(incompatible_licenses)))
             else:
                 incompatible_licenses = oe.license.incompatible_pkg_license(d, bad_licenses, pkg_dic[pkg]["LICENSE"])
                 if incompatible_licenses:
@@ -171,6 +172,9 @@ def write_license_files(d, license_manifest, pkg_dic, rootfs):
                                        "The license listed %s was not in the "\
                                        "licenses collected for recipe %s"
                                        % (lic, pkg_dic[pkg]["PN"]), d)
+    if incompatible_packages:
+        bb.fatal("Some packages cannot be installed into the image because they have incompatible licenses:\n\t%s" % ("\n\t".join(incompatible_packages)))
+
     oe.qa.exit_if_errors(d)
 
     # Two options here: