set the PVE_GENERATING_DOCS env var in perl calls

This way we can exclude packages we don't need while
generating documentation.

diff --git a/pve-doc-generator.mk.in b/pve-doc-generator.mk.in
index 760c4aa5eca4995d4868818768a298ff3f417958..af0a8614e4f3d4d0d20a596e93cf546c941eed8e 100644 (file)
--- a/pve-doc-generator.mk.in
+++ b/pve-doc-generator.mk.in
@@ -5,6 +5,8 @@ DGDIR?=/usr/share/pve-doc-generator
 
 ASCIIDOC_PVE?=/usr/bin/asciidoc-pve
 
+PERL_DOC_ENV=PVE_GENERATING_DOCS=1
+
 PVE_COMMON_DOC_SOURCES=                 \
        ${ASCIIDOC_PVE}                 \
        pve-copyright.adoc              \
@@ -17,22 +19,22 @@ attributes.txt docinfo.xml pmxcfs.8-synopsis.adoc:
        mv $@.tmp $@
 
 %-opts.adoc: ${DGDIR}/gen-%-opts.pl
-       perl -I. ${DGDIR}/gen-$*-opts.pl >$@.tmp
+       $(PERL_DOC_ENV) perl -I. ${DGDIR}/gen-$*-opts.pl >$@.tmp
        mv $@.tmp $@
 
 %.adoc: ${DGDIR}/gen-%-adoc.pl
-       perl -I. ${DGDIR}/gen-$*-adoc.pl >$@.tmp
+       $(PERL_DOC_ENV) perl -I. ${DGDIR}/gen-$*-adoc.pl >$@.tmp
        mv $@.tmp $@
 
 pveperf.1-synopsis.adoc:
        echo '*pveperf* `[PATH]`' > pveperf.1-synopsis.adoc
 
 %.1-synopsis.adoc:
-       perl -I. -e "use PVE::CLI::$(subst -,_,$*);print PVE::CLI::$(subst -,_,$*)->generate_asciidoc_synopsis();" > $@.tmp
+       $(PERL_DOC_ENV) perl -I. -e "use PVE::CLI::$(subst -,_,$*);print PVE::CLI::$(subst -,_,$*)->generate_asciidoc_synopsis();" > $@.tmp
        mv $@.tmp $@
 
 %.8-synopsis.adoc:
-       perl -I. -e "use PVE::Service::$(subst -,_,$*);print PVE::Service::$(subst -,_,$*)->generate_asciidoc_synopsis();" > $@.tmp
+       $(PERL_DOC_ENV) perl -I. -e "use PVE::Service::$(subst -,_,$*);print PVE::Service::$(subst -,_,$*)->generate_asciidoc_synopsis();" > $@.tmp
        mv $@.tmp $@
 
 ifneq (${DGDIR},.)