mk: fix install-doc without html

When trying to install PDF, man pages or examples without having built
neither HTML API nor HTML guides, there was an error:

% make install-doc
tar: html: Cannot stat: No such file or directory

The fix is to check the html directory before installing HTML files.

Fixes: e4552b9cc603 ("mk: install doc")

Signed-off-by: Thomas Monjalon <thomas.monjalon@6wind.com>

diff --git a/mk/rte.sdkinstall.mk b/mk/rte.sdkinstall.mk
index 004b38b..7b0d8b5 100644 (file)
--- a/mk/rte.sdkinstall.mk
+++ b/mk/rte.sdkinstall.mk
@@ -164,7 +164,7 @@ install-sdk:
        $(Q)$(call rte_symlink, $(DESTDIR)$(libdir),     $(DESTDIR)$(targetdir)/lib)
 
 install-doc:
-ifneq ($(wildcard $O/doc),)
+ifneq ($(wildcard $O/doc/html),)
        $(Q)$(call rte_mkdir, $(DESTDIR)$(docdir))
        $(Q)tar -cf -      -C $O/doc html --exclude 'html/guides/.*' | \
            tar -xf -      -C $(DESTDIR)$(docdir) --strip-components=1 \