From 3edb742af85380718e03042287628159790521b4 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Fri, 16 Mar 2012 19:21:13 -0700
Subject: [PATCH] Build library in 'build' directory. Allows replacing generic
 code

By linking all of the source files into the 'build' directory, the
platform can replace any of them with different versions.

Signed-off-by: Keith Packard <keithp@keithp.com>
---
 Makefile | 26 +++++++++++++++++---------
 1 file changed, 17 insertions(+), 9 deletions(-)

diff --git a/Makefile b/Makefile
index fa2976a..0fbc337 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,9 @@
 # $Id$
 
+CC=arm-none-eabi-gcc
+
 # This is where you chose which platform to compile for (see 'make links' / './platform')
-PLATFORM := example
+PLATFORM := altos
 
 # This is a list of all non-source files that are part of the distribution.
 AUXFILES := Makefile Readme.txt
@@ -10,12 +12,13 @@ AUXFILES := Makefile Readme.txt
 PROJDIRS := functions includes internals
 # All source files of the project
 SRCFILES := $(shell find -L $(PROJDIRS) -type f -name "*.c")
+BUILDFILES := $(shell find -L build -type f -name "*.c")
 # All header files of the project
 HDRFILES := $(shell find -L $(PROJDIRS) -type f -name "*.h")
 # All .c files in functions/_PDCLIB that do not have a regression test driver
 INTFILES := _Exit atomax digits open print scan remove rename seed stdinit strtox_main strtox_prelim filemode eol errno seek prepread prepwrite allocpages tmpfilename closeall
 # All object files in the library
-OBJFILES := $(patsubst %.c,%.o,$(SRCFILES))
+OBJFILES := $(patsubst %.c,%.o,$(BUILDFILES))
 # All test drivers (.t)
 TSTFILES := $(patsubst %.c,%_t,$(SRCFILES))
 # All regression test drivers (.r)
@@ -30,11 +33,14 @@ REGDEPFILES := $(patsubst %,%.d,$(REGFILES))
 ALLFILES := $(SRCFILES) $(HDRFILES) $(AUXFILES)
 
 WARNINGS := -Wall -Wextra -pedantic -Wno-unused-parameter -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs -Winline -Wno-long-long -Wuninitialized -Wstrict-prototypes 
-CFLAGS := -fno-builtin -g -std=c99 -I./internals -I./testing $(WARNINGS) $(USERFLAGS)
+PLATFORM_FLAGS=-nostdinc -mlittle-endian -mthumb -mcpu=cortex-m3 -ffreestanding -nostdlib
+CFLAGS := -fno-builtin -Os -g -std=c99 -I./build/internals -I./testing $(WARNINGS) $(USERFLAGS) $(PLATFORM_FLAGS)
 
 .PHONY: all clean srcdist bindist test tests testdrivers regtests regtestdrivers todos fixmes find links unlink help
 
-all: pdclib.a testdrivers regtestdrivers
+all: pdclib.a
+
+check: all testdrivers regtestdrivers
 	@echo
 	@echo "========================"
 	@echo "Executing library tests:"
@@ -87,11 +93,13 @@ find:
 
 links:
 	@echo "Linking platform/$(PLATFORM)..."
-	@for file in $$(find platform/$(PLATFORM) -mindepth 2 -type f ! -path *.svn* -printf "%P\n"); do ln -s $$(dirname $$file | sed "s@[^/]*@..@g")/platform/$(PLATFORM)/$$file $$file; done
+	@for dir in $$(find functions includes internals -type d); do mkdir -p build/$$dir; done
+	@for file in $$(find platform/$(PLATFORM) -mindepth 2 -type f ! -path *.svn* -printf "%P\n"); do if [ ! -f build/$$file ]; then ln -s $$(dirname $$file | sed "s@[^/]*@..@g")/../platform/$(PLATFORM)/$$file build/$$file; fi; done
+	@for super in $(PROJDIRS); do for file in $$(find $$super -type f ! -path *.svn* -printf "%P\n"); do if [ ! -f build/$$super/$$file ]; then ln -s $$(echo $$file | sed "s@[^/]*@..@g")/../$$super/$$file build/$$super/$$file; fi; done; done
 
 unlink:
 	@echo "Unlinking platform files..."
-	@for dir in $(PROJDIRS); do find $$dir -type l -exec rm {} +; done
+	@for dir in $(PROJDIRS); do find build/$$dir -type l -exec rm {} +; done
 
 help:
 	@echo "Available make targets:"
@@ -118,12 +126,12 @@ help:
 	@echo "(Usage: USERFLAGS=\"flags\" make [...])."
 
 %.o: %.c Makefile
-	@echo " CC	$(patsubst functions/%,%,$@)"
-	@$(CC) $(CFLAGS) -MMD -MP -I./includes -c $< -o $@
+	echo " CC	$(patsubst functions/%,%,$@)"
+	$(CC) $(CFLAGS) -MMD -MP -I./build/includes -c $< -o $@
 
 %_t: %.c Makefile pdclib.a
 	@echo " CC	$(patsubst functions/%,%,$@)"
-	@$(CC) $(CFLAGS) -MMD -MP -DTEST -I./includes $< pdclib.a -o $@
+	@$(CC) $(CFLAGS) -MMD -MP -DTEST -I./build/includes $< pdclib.a -o $@
 
 %_r: %.c Makefile
 	@echo " CC	$(patsubst functions/%,%,$@)"
-- 
2.30.2