- fix generation of version.sty

- modify configure to perform a basic lookup for GNU versions of stat and date

configure.ac

@@ -70,6 +70,8 @@ AC_PROG_CPP
 AC_PROG_SED
 AC_PROG_LN_S
 AC_PROG_F77
+AC_CHECK_PROGS(PROG_STAT,gstat stat)
+AC_CHECK_PROGS(PROG_DATE,gdate date)
 
 LT_PREREQ([2.2])
 LT_INIT([win32-dll])

doc/doxygen/Makefile.am

@@ -112,29 +112,29 @@ starpu_config.h: $(top_srcdir)/include/starpu_config.h.in
 
 chapters/version.sty: $(chapters)
 	@for f in $(chapters) ; do \
-                if test -f $(top_srcdir)/doc/doxygen/$$f ; then stat --format=%Y $(top_srcdir)/doc/doxygen/$$f ; fi \
+                if test -f $(top_srcdir)/doc/doxygen/$$f ; then $(PROG_STAT) --format=%Y $(top_srcdir)/doc/doxygen/$$f ; fi \
         done | sort -r | head -1 > timestamp_sty
 	@if test -s timestamp_sty ; then \
-		LC_ALL=C date --date=@`cat timestamp_sty` +"%d %B %Y" > timestamp_sty_updated ;\
-		LC_ALL=C date --date=@`cat timestamp_sty` +"%B %Y" > timestamp_sty_updated_month ;\
+		LC_ALL=C $(PROG_DATE) --date=@`cat timestamp_sty` +"%d %B %Y" > timestamp_sty_updated ;\
+		LC_ALL=C $(PROG_DATE) --date=@`cat timestamp_sty` +"%B %Y" > timestamp_sty_updated_month ;\
 	fi
 	@if test -s timestamp_sty_updated ; then \
-		echo "\newcommand{\STARPUUPDATED}{"`cat timestamp_sty_updated`"}" > $(top_srcdir)/doc/doxygen/chapters/version.sty;\
+		echo '\\newcommand{\\STARPUUPDATED}{'`cat timestamp_sty_updated`'}' > $(top_srcdir)/doc/doxygen/chapters/version.sty;\
 	else \
-		echo "\newcommand{\STARPUUPDATED}{unknown date}" > $(top_srcdir)/doc/doxygen/chapters/version.sty;\
+		echo '\\newcommand{\\STARPUUPDATED}{unknown date}' > $(top_srcdir)/doc/doxygen/chapters/version.sty;\
 	fi
-	@echo "\newcommand{\STARPUVERSION}{$(VERSION)}" >> $(top_srcdir)/doc/doxygen/chapters/version.sty
+	@echo '\\newcommand{\\STARPUVERSION}{$(VERSION)}' >> $(top_srcdir)/doc/doxygen/chapters/version.sty
 	@for f in timestamp_sty timestamp_sty_updated timestamp_sty_updated_month ; do \
 		if test -f $$f ; then $(RM) $$f ; fi ;\
 	done
 
 chapters/version.html: $(chapters)
 	@for f in $(chapters) ; do \
-                if test -f $(top_srcdir)/doc/doxygen/$$f ; then stat --format=%Y $(top_srcdir)/doc/doxygen/$$f ; fi \
+                if test -f $(top_srcdir)/doc/doxygen/$$f ; then $(PROG_STAT) --format=%Y $(top_srcdir)/doc/doxygen/$$f ; fi \
         done | sort -r | head -1 > timestamp_html
 	@if test -s timestamp_html ; then \
-		LC_ALL=C date --date=@`cat timestamp_html` +"%d %B %Y" > timestamp_html_updated ;\
-		LC_ALL=C date --date=@`cat timestamp_html` +"%B %Y" > timestamp_html_updated_month ;\
+		LC_ALL=C $(PROG_DATE) --date=@`cat timestamp_html` +"%d %B %Y" > timestamp_html_updated ;\
+		LC_ALL=C $(PROG_DATE) --date=@`cat timestamp_html` +"%B %Y" > timestamp_html_updated_month ;\
 	fi
 	@echo "This manual documents the usage of StarPU version $(VERSION)." > $(top_srcdir)/doc/doxygen/chapters/version.html
 	@if test -s timestamp_html_updated ; then \