package_rpm.bbclass: Add RPMSPEC_PREAMBLE

Add a way to add arbitrary text to the top of a spec file.  This
can be useful for adding specific tags to the produced binaries for
tracking purposes.

(From OE-Core rev: c01a92408d267bcc5365bf8495035f6021a49ced)

Signed-off-by: Mark Hatle <mark.hatle@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/meta/classes/package_rpm.bbclass b/meta/classes/package_rpm.bbclass
index 469526be7a..d03dc3f883 100644
--- a/meta/classes/package_rpm.bbclass
+++ b/meta/classes/package_rpm.bbclass
@@ -817,6 +817,12 @@ python write_specfile () {
         except OSError:
                 raise bb.build.FuncFailed("unable to open spec file for writing.")
 
+        # RPMSPEC_PREAMBLE is a way to add arbitrary text to the top
+        # of the generated spec file
+        external_preamble = d.getVar("RPMSPEC_PREAMBLE", True)
+        if external_preamble:
+                specfile.write(external_preamble + "\n")
+
         for line in spec_preamble_top:
                 specfile.write(line + "\n")