build-sys: make sure we rebuild manpages when doing releases

https://bugs.freedesktop.org/show_bug.cgi?id=76056

diff --git a/Makefile.am b/Makefile.am
index bd78f444c506eee885597c9d783ccc60ab0da80d..2e4f8573845ed9568b89c01c4bbb1a1158d8c9d9 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -4735,7 +4735,7 @@ CLEANFILES += \
 
 # ------------------------------------------------------------------------------
 if ENABLE_MANPAGES
-man/custom-entities.ent:
+man/custom-entities.ent: configure.ac
        $(AM_V_GEN)$(MKDIR_P) $(dir $@)
        $(AM_V_GEN)(echo '<?xml version="1.0" encoding="utf-8" ?>' && \
         printf '$(subst '|,<!ENTITY ,$(subst =, ",$(subst |',">\n,$(substitutions))))') \