libserial: prevent documentation from being build

If docbook2pdf is present on the host, the documentation is built, no matter all the --disable-doc*
But forcing ac_cv_prog_DOCBOOK2PDF to no tells configure that docbook2pdf is absent, and thus the documentation is not built.

---
 package/libserial/libserial.mk |    2 ++
 1 file changed, 2 insertions(+)

index c5142c5..d2c928b 100644
@@ -10,4 +10,6 @@ LIBSERIAL_INSTALL_STAGING = YES
 LIBSERIAL_LICENSE = GPLv2+
 LIBSERIAL_LICENSE_FILES = COPYING
 
+LIBSERIAL_CONF_ENV = ac_cv_prog_DOCBOOK2PDF=no
+
 $(eval $(autotools-package))

1.7.10.4

Richard> If docbook2pdf is present on the host, the documentation is built, no Richard> matter all the --disable-doc*
Richard> But forcing ac_cv_prog_DOCBOOK2PDF to no tells configure that Richard> docbook2pdf is absent, and thus the documentation is not built.

Committed, thanks.

Bye, Peter Korsgaard