[wasm] Try at autotools build

configure.ac

@@ -417,6 +417,28 @@ AM_CONDITIONAL(HAVE_CORETEXT, $have_coretext)
 
 dnl ===========================================================================
 
+AC_ARG_WITH(wasm,
+	[AS_HELP_STRING([--with-wasm=@<:@yes/no/auto@:>@],
+			[Use the wasm-micro-runtime library @<:@default=no@:>@])],,
+	[with_wasm=no])
+have_wasm=false
+if test "x$with_wasm" = "xyes" -o "x$with_wasm" = "xauto"; then
+	AC_CHECK_HEADERS(wasm_export.h, have_wasm=true)
+fi
+if test "x$with_wasm" = "xyes" -a "x$have_wasm" != "xtrue"; then
+	AC_MSG_ERROR([wasm support requested but not found])
+fi
+if $have_wasm; then
+	WASM_CFLAGS=
+	WASM_LIBS="-liwasm"
+	AC_SUBST(WASM_CFLAGS)
+	AC_SUBST(WASM_LIBS)
+	AC_DEFINE(HAVE_WASM, 1, [Have wasm-micro-runtime library])
+fi
+AM_CONDITIONAL(HAVE_WASM, $have_wasm)
+
+dnl ===========================================================================
+
 AC_CONFIG_FILES([
 Makefile
 src/Makefile
@@ -478,6 +500,7 @@ Platform shapers (not normally needed):
 	DirectWrite:		${have_directwrite}
 	GDI:			${have_gdi}
 	Uniscribe:		${have_uniscribe}
+	WebAssembly:		${have_wasm}
 
 Other features:
 	Documentation:		${enable_gtk_doc}

src/Makefile.am

@@ -114,6 +114,16 @@ else
 HB_HAS_CORETEXT_DEF = undef HB_HAS_CORETEXT
 endif
 
+if HAVE_WASM
+HBCFLAGS += $(WASM_CFLAGS)
+HBNONPCLIBS += $(WASM_LIBS)
+HBSOURCES += $(HB_WASM_sources)
+HBHEADERS += $(HB_WASM_headers)
+HB_HAS_WASM_DEF = define HB_HAS_WASM 1
+else
+HB_HAS_WASM_DEF = undef HB_HAS_WASM
+endif
+
 
 BUILT_SOURCES += \
 	hb-version.h

src/Makefile.sources

@@ -255,7 +255,6 @@ HB_BASE_sources = \
 	hb-unicode.hh \
 	hb-utf.hh \
 	hb-vector.hh \
-	hb-wasm-shape.cc \
 	hb-priority-queue.hh \
 	hb.hh \
 	$(NULL)
@@ -339,10 +338,22 @@ HB_GDI_headers = hb-gdi.h
 HB_UNISCRIBE_sources = hb-uniscribe.cc
 HB_UNISCRIBE_headers = hb-uniscribe.h
 
-# Sources for libharfbuzz-gobject and libharfbuzz-icu
 HB_ICU_sources = hb-icu.cc
 HB_ICU_headers = hb-icu.h
 
+HB_WASM_sources = \
+	hb-wasm-api.cc \
+	hb-wasm-api.hh \
+	hb-wasm-api-blob.hh \
+	hb-wasm-api-buffer.hh \
+	hb-wasm-api-common.hh \
+	hb-wasm-api-face.hh \
+	hb-wasm-api-font.hh \
+	hb-wasm-api-shape.hh \
+	hb-wasm-shape.cc \
+	$(NULL)
+HB_WASM_headers = hb-wasm-api.h
+
 # Sources for libharfbuzz-subset
 HB_SUBSET_sources = \
 	hb-number.cc \

src/harfbuzz.cc

@@ -58,5 +58,3 @@
 #include "hb-ucd.cc"
 #include "hb-unicode.cc"
 #include "hb-uniscribe.cc"
-#include "hb-wasm-api.cc"
-#include "hb-wasm-shape.cc"