From 6f413e46e2e2ab5a72cf081fbb1c68c53fb6a7bc Mon Sep 17 00:00:00 2001
From: Milk-Cool <milan-pl@mail.ru>
Date: Thu, 2 Nov 2023 17:37:50 +0300
Subject: [PATCH] faster compilation times!

---
 .gitignore |  8 +++++---
 Makefile   | 28 +++++++++++++++++++++++-----
 2 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/.gitignore b/.gitignore
index 0826892..944ef15 100644
--- a/.gitignore
+++ b/.gitignore
@@ -133,8 +133,7 @@ dist
 # CUSTOM ENTRIES
 
 # Object files
-flipper/**/*.o
-helpers/**/*.o
+**/*.o
 
 # Test script
 test.sh
@@ -161,4 +160,7 @@ wasm/
 .gdb_history
 
 # Storage
-flippulator_sd
\ No newline at end of file
+flippulator_sd
+
+# Build timestamps
+timestamps.json
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 7641cf8..f0f9809 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ HELPERS = helpers/
 APP = flippulator_app_copy/
 SOURCES = $(shell find $(LIBS) -name "*.c") $(shell find $(LIBS_HAL) -name "*.c") $(shell find $(HELPERS) -name "*.c") $(shell find $(EXT_LIB_ALL) -name "*.c")
 SRC_APP = $(shell find $(APP) -name "*.c")
-#OBJECTS = ${subst .c,.o,$(SOURCES)}
+OBJECTS = ${subst .c,.o,$(SOURCES)} ${subst .c,.o,$(SRC_APP)}
 OUT_DIR = $(shell cat /tmp/flippulator_temp_out_app_dir)
 OUT_APP_NAME = $(shell cat /tmp/flippulator_temp_out_app_name)
 CC_EXTRA = $(shell cat /tmp/flippulator_temp_cc_extra)
@@ -18,13 +18,16 @@ OUT_ALL = $(OUT_DIR) $(OUT_APP)
 #OUT_LIB_NAME = flipper
 #OUT_LIB = lib$(OUT_LIB_NAME).a
 #CC_PREFIX = gcc -c -Wall# -fPIC
-CC_PREFIX_FINAL = gcc -O2 -Wall -Wno-main -g -m32 -D_FLIPPULATOR
+CC_PREFIX_FINAL = gcc -O2 -Wall -Wno-main -g -m32 -DFLIPPULATOR_APP_ID=\"$(OUT_APP_NAME)\" -D_FLIPPULATOR
+CC_POSTFIX_FINAL =  -lSDL2 -lSDL2_ttf -lm -lbsd
 BUILD_LIB_heatshrink_PATH = lib/heatshrink/
 BUILD_LIB_heatshrink = $(BUILD_LIB_heatshrink_PATH)libheatshrink_static.a $(BUILD_LIB_heatshrink_PATH)libheatshrink_dynamic.a
 #CC_PREFIX = clang -c
 CR_TEXT = \
 	"The FontStruction “HaxrCorp 4089” (https://fontstruct.com/fontstructions/show/192981) by “sahwar” is licensed under a Creative Commons Attribution Share Alike license (http://creativecommons.org/licenses/by-sa/3.0/)."
 WASM_DIR = wasm/
+TIMESTAMPS = timestamps.json
+TIMESTAMPS_TMP = /tmp/flippulator_timestamps.json
 
 all: $(OUT_ALL)
 
@@ -34,7 +37,22 @@ $(OUT_DIR): $(OUT_APP) $(SRC_FONT)
 
 $(OUT_APP):
 	mkdir $(OUT_DIR)
-	$(CC_PREFIX_FINAL) $(CC_EXTRA) -I$(LIBS) -I$(LIBS_HAL) -I$(HELPERS) -I$(EXT_LIB_ALL) $(SRC_APP) $(SOURCES) -DFLIPPULATOR_APP_ID=\"$(OUT_APP_NAME)\" -lSDL2 -lSDL2_ttf -lm -lbsd -o $(OUT_APP)
+	touch $(TIMESTAMPS)
+	if [ ! -s $(TIMESTAMPS) ]; then \
+		echo '{}' > $(TIMESTAMPS); \
+	fi
+#	$(CC_PREFIX_FINAL) $(CC_EXTRA) -I$(LIBS) -I$(LIBS_HAL) -I$(HELPERS) -I$(EXT_LIB_ALL) $(SRC_APP) $(SOURCES) -lSDL2 -lSDL2_ttf -lm -lbsd -o $(OUT_APP)
+	for file in $(SRC_APP) $(SOURCES); do \
+		dateextr=`date -r "$$file" +%s`; \
+		datejson=`jq '.["'$$file'"]' $(TIMESTAMPS) | sed 's/"//g'`; \
+		if [ "$$dateextr" != "$$datejson" ]; then \
+			objname=`echo "$$file" | sed 's/\.c/\.o/g'`; \
+			$(CC_PREFIX_FINAL) -c $(CC_EXTRA) -I$(LIBS) -I$(LIBS_HAL) -I$(HELPERS) -I$(EXT_LIB_ALL) "$$file" -o $$objname $(CC_POSTFIX_FINAL); \
+			echo CC: $$file = $$objname; \
+			jq '.["'$$file'"] = "'$$dateextr'"' $(TIMESTAMPS) > $(TIMESTAMPS_TMP); mv $(TIMESTAMPS_TMP) $(TIMESTAMPS); \
+		fi; \
+	done
+	$(CC_PREFIX_FINAL) $(OBJECTS) -o $(OUT_APP) $(CC_POSTFIX_FINAL)
 
 #$(BUILD_LIB_heatshrink):
 #	make -C lib/heatshrink libraries
@@ -53,6 +71,6 @@ clean:
 $(WASM_DIR):
 	mkdir $(WASM_DIR)
 
-wasm: $(WASM_DIR)
-	emcc -O2 $(SOURCES) $(SRC_APP) $(CC_EXTRA) -g -s WASM=1 -s USE_SDL=2 -s USE_SDL_TTF=2 --preload-file $(SRC_FONT) -o $(WASM_DIR)index.html -I$(LIBS) -I$(LIBS_HAL) -I$(EXT_LIB_ALL) -I$(HELPERS)
+#wasm: $(WASM_DIR)
+#	emcc -O2 $(SOURCES) $(SRC_APP) $(CC_EXTRA) -g -s WASM=1 -s USE_SDL=2 -s USE_SDL_TTF=2 --preload-file $(SRC_FONT) -o $(WASM_DIR)index.html -I$(LIBS) -I$(LIBS_HAL) -I$(EXT_LIB_ALL) -I$(HELPERS)