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build: don't try to generate docs when cross-compiling

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When cross-compiling don't run the generated bison to update the docs.
Reported by Aaro Koskinen.
<http://lists.gnu.org/archive/html/bison-patches/2014-03/msg00000.html>

* configure.ac (CROSS_COMPILING): New.
* doc/local.mk: Use it.
This commit is contained in:
Akim Demaille
2014-08-30 00:36:20 +03:00
parent 8386f6ef28
commit a16074bb09
3 changed files with 11 additions and 1 deletions
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8
doc/local.mk
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@@ -85,11 +85,13 @@ doc/refcard.pdf: doc/refcard.tex
# repeated builds of bison.help.
EXTRA_DIST += $(top_srcdir)/doc/bison.help
if ! CROSS_COMPILING
MAINTAINERCLEANFILES += $(top_srcdir)/doc/bison.help
$(top_srcdir)/doc/bison.help: src/bison$(EXEEXT)
$(AM_V_GEN)src/bison$(EXEEXT) --version >doc/bison.help.tmp
$(AM_V_at) src/bison$(EXEEXT) --help >>doc/bison.help.tmp
$(AM_V_at)$(top_srcdir)/build-aux/move-if-change doc/bison.help.tmp $@
endif ! CROSS_COMPILING
## ----------- ##
@@ -106,7 +108,11 @@ remove_time_stamp = \
sed 's/^\(\.TH[^"]*"[^"]*"[^"]*\)"[^"]*"/\1/'
# Depend on configure to get version number changes.
$(top_srcdir)/doc/bison.1: doc/bison.help doc/bison.x $(top_srcdir)/configure
if ! CROSS_COMPILING
MAN_DEPS = doc/bison.help doc/bison.x $(top_srcdir)/configure
endif
$(top_srcdir)/doc/bison.1: $(MAN_DEPS)
$(AM_V_GEN)$(HELP2MAN) \
--include=$(top_srcdir)/doc/bison.x \
--output=$@.t src/bison$(EXEEXT)