build fix

externals/zstd/contrib/gen_html/Makefile

@@ -0,0 +1,51 @@
+# ################################################################
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under both the BSD-style license (found in the
+# LICENSE file in the root directory of this source tree) and the GPLv2 (found
+# in the COPYING file in the root directory of this source tree).
+# ################################################################
+
+CXXFLAGS ?= -O3
+CXXFLAGS += -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow -Wstrict-aliasing=1 -Wswitch-enum -Wno-comment
+CXXFLAGS += $(MOREFLAGS)
+FLAGS   = $(CPPFLAGS) $(CXXFLAGS) $(LDFLAGS)
+
+ZSTDAPI = ../../lib/zstd.h
+ZSTDMANUAL = ../../doc/zstd_manual.html
+LIBVER_MAJOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(ZSTDAPI)`
+LIBVER_MINOR_SCRIPT:=`sed -n '/define ZSTD_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(ZSTDAPI)`
+LIBVER_PATCH_SCRIPT:=`sed -n '/define ZSTD_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < $(ZSTDAPI)`
+LIBVER_SCRIPT:= $(LIBVER_MAJOR_SCRIPT).$(LIBVER_MINOR_SCRIPT).$(LIBVER_PATCH_SCRIPT)
+LIBVER := $(shell echo $(LIBVER_SCRIPT))
+
+
+# Define *.exe as extension for Windows systems
+ifneq (,$(filter Windows%,$(OS)))
+EXT =.exe
+else
+EXT =
+endif
+
+
+.PHONY: default
+default: gen_html
+
+.PHONY: all
+all: manual
+
+gen_html: gen_html.cpp
+	$(CXX) $(FLAGS) $^ -o $@$(EXT)
+
+$(ZSTDMANUAL): gen_html $(ZSTDAPI)
+	echo "Update zstd manual in /doc"
+	./gen_html $(LIBVER) $(ZSTDAPI) $(ZSTDMANUAL)
+
+.PHONY: manual
+manual: gen_html $(ZSTDMANUAL)
+
+.PHONY: clean
+clean:
+	@$(RM) gen_html$(EXT)
+	@echo Cleaning completed