AUTOMAKE_OPTIONS  = foreign 1.4 no-dependencies

libexec_PROGRAMS    = detect-upc
detect_upc_SOURCES  = detect-upc.c detect-upc.h $(SCANNER_SRC)
libexec_SCRIPTS   = upcppp

if CROSS_COMPILING
# Use HOST_CC for this program when cross-compiling, because it must run on the host
CFLAGS_STAMP=$(top_builddir)/detect-upc/.set-cflags

$(CFLAGS_STAMP): $(srcdir)/Makefile.in
	cd $(top_builddir) && CONFIG_HEADERS= CONFIG_FILES=detect-upc/Makefile ./config.status
	mv Makefile Makefile.bak && \
	@PERL@ -p -e 's|^\s*CFLAGS\s*=.*$$|CFLAGS=@HOST_CFLAGS@| ;  \
	              s|^\s*CC\s*=.*$$|CC=@HOST_CC@| ;              \
	              s|^\s*UPCR_EXTRA_CFLAGS\s*=.*$$|UPCR_EXTRA_CFLAGS=| ; \
	              s|^\s*LDFLAGS\s*=.*$$|LDFLAGS=@HOST_LDFLAGS@| ;    \
	              s|^\s*LIBS\s*=.*$$|LIBS=@HOST_LIBS@| ; '        \
		     Makefile.bak >Makefile &&  \
	rm -f Makefile.bak
	touch $(CFLAGS_STAMP)

Makefile: $(CFLAGS_STAMP)
	touch Makefile
endif

UPCR_EXTRA_CFLAGS = @UPCR_EXTRA_CFLAGS@
if BUILDCONFIG_DEBUG
detect_upc_CFLAGS = -DDEBUG $(UPCR_EXTRA_CFLAGS)
else
detect_upc_CFLAGS = -DNDEBUG $(UPCR_EXTRA_CFLAGS)
endif
# Required by Automake 1.4
AM_CFLAGS = $(detect_upc_CFLAGS)

# A scanner.c generated by a vendor-lex may require their specific lib
# Though our flex-generated scanner.c is stand-alone, an extra -l is harmless
detect_upc_LDADD = $(LEXLIB)

# Install .pl in libexecdir, but w/o exec permissions
dotpldir = $(libexecdir)
dotpl_DATA = upcppp.pl

if UPCR_USE_LEX
# We are using a LEX
# Let automake do its normal thing to build.
# However, we also add the scanner.c to the files to clean.
SCANNER_SRC = scanner.l
scanner_clean = scanner.c

if UPCR_HAVE_FLEX
# Since we know this is flex we can pass args to tune
AM_LFLAGS = -8 -Cfe
endif

# automake-1.4-p5 doesn't DIST files from the build dir unless in cygnus mode
scanner_dist_hook: scanner.c
	@test -f '$(distdir)/scanner.c' || cp -p scanner.c '$(distdir)'/

else
# We are NOT using a LEX and must rely on the prebuilt scanner.c
# Always use the prebuilt scanner.c.
# Never delete from srcdir, but may copy to blddir if necessary.
# If out-of-date, issue warning at build and refuse to distribute.
SCANNER_SRC = scanner.c
all-local: force
	@if test -f '$(srcdir)/scanner.c' -a \
	         -n "`find '$(srcdir)/scanner.l' -newer '$(srcdir)/scanner.c' 2>&1`"; then \
	    echo '**** WARNING: scanner.c might be out-of-date but cannot be rebuilt without a lex ****' >&2; \
	 fi
scanner_dist_hook: force
	@if test -f '$(srcdir)/scanner.c' -a \
	         -n "`find '$(srcdir)/scanner.l' -newer '$(srcdir)/scanner.c' 2>&1`"; then \
	    echo '**** WARNING: scanner.c might be out-of-date but cannot be rebuilt without a lex ****' >&2; \
	    echo '**** ERROR: refusing to distribute potentially out-of-date scanner.c ****' >&2; \
	    exit 1; \
	 fi
scanner.c: scanner.l
	@if test -f '$(srcdir)/scanner.c'; then :; else \
	    echo '**** ERROR: missing source file scanner.c cannot be built without a lex ****' >&2; \
	    exit 1; \
	 fi; \
	 $(scanner_cp)

if BUILD_IS_SRC
scanner_cp = :
scanner_clean =
else
scanner_cp = cp '$(srcdir)/scanner.c' .
scanner_clean = scanner.c
endif
endif

# upcppp 
upcppp: $(top_builddir)/gasnet/other/perlstart

# Things to copy from srcdir to buildir when they differ
if BUILD_IS_SRC
files_we_copy =
else
files_we_copy = $(dotpl_DATA)
$(files_we_copy): force
	@srcfile="$(srcdir)/`basename $@`" ; \
         if test ! -f "$@" -o "`find $$srcfile -newer '$@' 2>&1`" ; then \
          echo cp -f "$$srcfile" . ;         \
          cp -f "$$srcfile" . ;              \
         fi
endif

# Things to conditionally clean
CLEANFILES = $(scanner_clean) $(CFLAGS_STAMP)
DISTCLEANFILES = $(files_we_copy)

# Make sure scanner.c is flex-generated and newer than scanner.l so user won't need lex
dist-hook:
	@$(MAKE) scanner_dist_hook
	@if test -d $(top_srcdir)/.git && \
	    (cd $(srcdir) && \
	     test `git log -n1 --format='%ct' -- scanner.c` -lt \
	          `git log -n1 --format='%ct' -- scanner.l`); then \
	    echo '**** ERROR: scanner.c appears to be older than scanner.l ****' >&2; \
	    echo '**** ERROR: refusing to distribute potentially out-of-date scanner.c ****' >&2; \
	    exit 1; \
	 elif \! grep yy_flex '$(distdir)/scanner.c' >/dev/null 2>&1; then \
	    echo '**** ERROR: scanner.c does not appear to have been generated by flex ****' >&2; \
	    echo '**** ERROR: refusing to distribute potentially non-portable scanner.c ****' >&2; \
	    exit 1; \
	 else \
	    sleep 10; \
	    touch '$(distdir)/scanner.c'; \
	 fi

# Make certain we distribute the same files regardless of using LEX or not
EXTRA_DIST	= scanner.c scanner.l $(dotpl_DATA)

.PHONY: force scanner_dist_hook