build: revert recent change with distributed man page handling

* man/local.mk: commit f114495e added an extra check to ensure
a binary was working before using it to generate the man page.
However this was not working for the false(1) command,
and also one can generally specify that one should not
be using generated commands on the current system by passing
'cross_compiling=yes' to the configure invocation.

diff --git a/man/local.mk b/man/local.mk
index ee74d1f9b7c8fadee563002f8ac57443513407b6..eee38396c254e1d731ae47154d61d6103fdbd05b 100644 (file)
--- a/man/local.mk
+++ b/man/local.mk
@@ -191,16 +191,9 @@ endif
          && $(MKDIR_P) $$t                                             \
          && (cd $$t && $(LN_S) '$(abs_top_builddir)/src/'$$prog$(EXEEXT) \
                                $$argv$(EXEEXT))                        \
-         || exit 1;                                                    \
-## Double-check whether the built binary succeeds with --help as the above
-## CROSS_COMPILING condition might have been wrong in some cases, e.g. when
-## building against an incompatible glibc version on the same platform.
-       $$t/$$argv$(EXEEXT) --help </dev/null >/dev/null                \
-         && run_help2man="$(run_help2man)"                             \
-         || run_help2man="$(srcdir)/man/dummy-man";                    \
-       : $${SOURCE_DATE_EPOCH=`cat $(srcdir)/.timestamp 2>/dev/null || :`} \
+       && : $${SOURCE_DATE_EPOCH=`cat $(srcdir)/.timestamp 2>/dev/null || :`} \
        && : $${TZ=UTC0} && export TZ                                   \
-       && export SOURCE_DATE_EPOCH && $${run_help2man}                 \
+       && export SOURCE_DATE_EPOCH && $(run_help2man)                  \
                     --source='$(PACKAGE_STRING)'                       \
                     --include=$(srcdir)/man/$$name.x                   \
                     --output=$$t/$$name.1                              \