autoconf for mtd-utils

autoconf for mtd-utils

[David Byron]

In my environment, it would help to have separate build and source
directories for mtd-utils.  I need a native build for mkfs.jffs2 and a
cross-compiled build for flash_eraseall, etc.  A few weeks ago it looks like
Josh Boyer removed an attempt at a Makefile.am.

Is there a general aversion to automake?  If I submit a Makefile.in /
configure.ac that uses autoconf but not automake, does it have a chance of
getting accepted?

I'm happy to create a Makefile.am and configure.ac for automake if that's
got a better shot.

Thanks.

-DB

Re: autoconf for mtd-utils

[David Woodhouse]

On Wed, 2006-07-19 at 11:52 -0700, David Byron wrote:
> In my environment, it would help to have separate build and source
> directories for mtd-utils.  I need a native build for mkfs.jffs2 and a
> cross-compiled build for flash_eraseall, etc.  A few weeks ago it looks like
> Josh Boyer removed an attempt at a Makefile.am.
> 
> Is there a general aversion to automake?  If I submit a Makefile.in /
> configure.ac that uses autoconf but not automake, does it have a chance of
> getting accepted? 

No.

If you just send a proper Makefile patch which provides separate source
and build directories, that'd be useful though.

-- 
dwmw2

RE: autoconf for mtd-utils

[David Byron]

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On Wed, 2006-07-19 at 12:25p, David Woodhouse wrote: 

> If you just send a proper Makefile patch which provides
> separate source and build directories, that'd be useful
> though.

Like this?

-DB

[-- Attachment #2: Makefile.patch --]
[-- Type: application/octet-stream, Size: 2420 bytes --]

diff --git a/Makefile b/Makefile
index 37cd7f7..62c7650 100644
--- a/Makefile
+++ b/Makefile
@@ -6,11 +6,18 @@ # $Id: Makefile,v 1.60 2005/11/07 11:15:
 SBINDIR=/usr/sbin
 MANDIR=/usr/man
 INCLUDEDIR=/usr/include
-#CROSS=arm-linux-
-CC := $(CROSS)gcc
+#CROSS=arm-linux
+CC := $(CROSS)-gcc
 CFLAGS := -I./include -O2 -Wall
 
-TARGETS = ftl_format flash_erase flash_eraseall nanddump doc_loadbios \
+ifeq ($(origin CROSS),undefined)
+  BUILDDIR = .
+else
+  BUILDDIR = $(CROSS)
+  CLEAN_BUILDDIR = $(BUILDDIR)
+endif
+
+RAWTARGETS = ftl_format flash_erase flash_eraseall nanddump doc_loadbios \
 	mkfs.jffs ftl_check mkfs.jffs2 flash_lock flash_unlock flash_info \
 	flash_otp_info flash_otp_dump mtd_debug flashcp nandwrite \
 	jffs2dump \
@@ -18,40 +25,48 @@ TARGETS = ftl_format flash_erase flash_e
 	rfddump rfdformat \
 	sumtool #jffs2reader
 
+TARGETS = $(foreach target,$(RAWTARGETS),$(BUILDDIR)/$(target))
+
 SYMLINKS =
 
 %: %.o
-	$(CC) $(LDFLAGS) -g -o $@ $^
+	$(CC) $(CFLAGS) $(LDFLAGS) -g -o $@ $^
 
-%.o: %.c
-	$(CC) $(CFLAGS) -g -c -o $@ $< -g -Wp,-MD,.$<.dep
+$(BUILDDIR)/%.o: %.c
+	mkdir -p $(BUILDDIR)
+	$(CC) $(CFLAGS) -g -c -o $@ $< -g -Wp,-MD,$(BUILDDIR)/.$(<F).dep
 
 .SUFFIXES:
 
 all: $(TARGETS)
 
-IGNORE=${wildcard .*.c.dep}
+IGNORE=${wildcard $(BUILDDIR)/.*.c.dep}
 -include ${IGNORE}
 
 clean:
-	rm -f *.o $(TARGETS) .*.c.dep $(SYMLINKS)
+	rm -f $(BUILDDIR)/*.o $(TARGETS) $(BUILDDIR)/.*.c.dep $(SYMLINKS)
+	if [ "$(CROSS)x" != "x" ]; then rm -rf $(CROSS); fi
 
 $(SYMLINKS):
 	ln -sf ../fs/jffs2/$@ $@
 
-mkfs.jffs2: crc32.o compr_rtime.o mkfs.jffs2.o compr_zlib.o compr.o
+$(BUILDDIR)/mkfs.jffs2: $(BUILDDIR)/crc32.o \
+			$(BUILDDIR)/compr_rtime.o \
+			$(BUILDDIR)/mkfs.jffs2.o \
+			$(BUILDDIR)/compr_zlib.o \
+			$(BUILDDIR)/compr.o
 	$(CC) $(LDFLAGS) -o $@ $^ -lz
 
-flash_eraseall: crc32.o flash_eraseall.o
+$(BUILDDIR)/flash_eraseall: $(BUILDDIR)/crc32.o $(BUILDDIR)/flash_eraseall.o
 	$(CC) $(LDFLAGS) -o $@ $^
 
-jffs2reader: jffs2reader.o
+$(BUILDDIR)/jffs2reader: $(BUILDDIR)/jffs2reader.o
 	$(CC) $(LDFLAGS) -o $@ $^ -lz
 
-jffs2dump: jffs2dump.o crc32.o
+$(BUILDDIR)/jffs2dump: $(BUILDDIR)/jffs2dump.o $(BUILDDIR)/crc32.o
 	$(CC) $(LDFLAGS) -o $@ $^
 
-sumtool: sumtool.o crc32.o
+$(BUILDDIR)/sumtool: $(BUILDDIR)/sumtool.o $(BUILDDIR)/crc32.o
 	$(CC) $(LDFLAGS) -o $@ $^
 
 install: ${TARGETS}

Re: autoconf for mtd-utils

[Josh Boyer]

On 7/19/06, David Byron <dbyron@hheld.com> wrote:
> On Wed, 2006-07-19 at 12:25p, David Woodhouse wrote:
>
> > If you just send a proper Makefile patch which provides
> > separate source and build directories, that'd be useful
> > though.
>
> Like this?

Something like that.  But leave the definition of CROSS alone.  It's
better to leave the trailing '-' at the end so that if other cross
tools are needed, you just specify $(CROSS)ld, etc.

josh

RE: autoconf for mtd-utils

[David Byron]

[-- Attachment #1: Type: text/plain, Size: 261 bytes --]

On Sun, 2006-07-30 at 11:10a, Josh Boyer wrote:

> Something like that.  But leave the definition of CROSS alone.  It's
> better to leave the trailing '-' at the end so that if other cross
> tools are needed, you just specify $(CROSS)ld, etc.

How's this?

-DB

[-- Attachment #2: Makefile.patch.3 --]
[-- Type: application/octet-stream, Size: 2310 bytes --]

diff --git a/Makefile b/Makefile
index 37cd7f7..683ddbf 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,14 @@ #CROSS=arm-linux-
 CC := $(CROSS)gcc
 CFLAGS := -I./include -O2 -Wall
 
-TARGETS = ftl_format flash_erase flash_eraseall nanddump doc_loadbios \
+ifeq ($(origin CROSS),undefined)
+  BUILDDIR := .
+else
+# Remove the trailing slash to make the directory name
+  BUILDDIR := $(CROSS:-=)
+endif
+
+RAWTARGETS = ftl_format flash_erase flash_eraseall nanddump doc_loadbios \
 	mkfs.jffs ftl_check mkfs.jffs2 flash_lock flash_unlock flash_info \
 	flash_otp_info flash_otp_dump mtd_debug flashcp nandwrite \
 	jffs2dump \
@@ -18,40 +25,48 @@ TARGETS = ftl_format flash_erase flash_e
 	rfddump rfdformat \
 	sumtool #jffs2reader
 
+TARGETS = $(foreach target,$(RAWTARGETS),$(BUILDDIR)/$(target))
+
 SYMLINKS =
 
 %: %.o
-	$(CC) $(LDFLAGS) -g -o $@ $^
+	$(CC) $(CFLAGS) $(LDFLAGS) -g -o $@ $^
 
-%.o: %.c
-	$(CC) $(CFLAGS) -g -c -o $@ $< -g -Wp,-MD,.$<.dep
+$(BUILDDIR)/%.o: %.c
+	mkdir -p $(BUILDDIR)
+	$(CC) $(CFLAGS) -g -c -o $@ $< -g -Wp,-MD,$(BUILDDIR)/.$(<F).dep
 
 .SUFFIXES:
 
 all: $(TARGETS)
 
-IGNORE=${wildcard .*.c.dep}
+IGNORE=${wildcard $(BUILDDIR)/.*.c.dep}
 -include ${IGNORE}
 
 clean:
-	rm -f *.o $(TARGETS) .*.c.dep $(SYMLINKS)
+	rm -f $(BUILDDIR)/*.o $(TARGETS) $(BUILDDIR)/.*.c.dep $(SYMLINKS)
+	if [ "$(BUILDDIR)x" != ".x" ]; then rm -rf $(BUILDDIR); fi
 
 $(SYMLINKS):
 	ln -sf ../fs/jffs2/$@ $@
 
-mkfs.jffs2: crc32.o compr_rtime.o mkfs.jffs2.o compr_zlib.o compr.o
+$(BUILDDIR)/mkfs.jffs2: $(BUILDDIR)/crc32.o \
+			$(BUILDDIR)/compr_rtime.o \
+			$(BUILDDIR)/mkfs.jffs2.o \
+			$(BUILDDIR)/compr_zlib.o \
+			$(BUILDDIR)/compr.o
 	$(CC) $(LDFLAGS) -o $@ $^ -lz
 
-flash_eraseall: crc32.o flash_eraseall.o
+$(BUILDDIR)/flash_eraseall: $(BUILDDIR)/crc32.o $(BUILDDIR)/flash_eraseall.o
 	$(CC) $(LDFLAGS) -o $@ $^
 
-jffs2reader: jffs2reader.o
+$(BUILDDIR)/jffs2reader: $(BUILDDIR)/jffs2reader.o
 	$(CC) $(LDFLAGS) -o $@ $^ -lz
 
-jffs2dump: jffs2dump.o crc32.o
+$(BUILDDIR)/jffs2dump: $(BUILDDIR)/jffs2dump.o $(BUILDDIR)/crc32.o
 	$(CC) $(LDFLAGS) -o $@ $^
 
-sumtool: sumtool.o crc32.o
+$(BUILDDIR)/sumtool: $(BUILDDIR)/sumtool.o $(BUILDDIR)/crc32.o
 	$(CC) $(LDFLAGS) -o $@ $^
 
 install: ${TARGETS}

Re: autoconf for mtd-utils

[Josh Boyer]

On 7/31/06, David Byron <dbyron@hheld.com> wrote:
> On Sun, 2006-07-30 at 11:10a, Josh Boyer wrote:
>
> > Something like that.  But leave the definition of CROSS alone.  It's
> > better to leave the trailing '-' at the end so that if other cross
> > tools are needed, you just specify $(CROSS)ld, etc.
>
> How's this?

Better.  But it only defines BUILDDIR during a cross compile.  Is that
what you wanted?  Or did you want a general purpose way to separate
the object and binary files from the source during build time?

Sorry for not asking that question sooner.  I've just gotten back from
vacation so I'm a bit slow to respond on some things.

josh

RE: autoconf for mtd-utils

[David Byron]

On Mon, 2006-07-31 at 5:50p, Josh Boyer wrote: 

> Better.  But it only defines BUILDDIR during a cross compile.  Is that
> what you wanted?  Or did you want a general purpose way to separate
> the object and binary files from the source during build time?

I do define BUILDDIR for native builds too, but to the current directory.
The important thing for me is that native objects live in a different place
than cross-compiled objects.  Where they are relative to the source isn't
important to me at the moment.

-DB

Re: autoconf for mtd-utils

[Josh Boyer]

On 8/1/06, David Byron <dbyron@hheld.com> wrote:
> On Mon, 2006-07-31 at 5:50p, Josh Boyer wrote:
>
> > Better.  But it only defines BUILDDIR during a cross compile.  Is that
> > what you wanted?  Or did you want a general purpose way to separate
> > the object and binary files from the source during build time?
>
> I do define BUILDDIR for native builds too, but to the current directory.
> The important thing for me is that native objects live in a different place
> than cross-compiled objects.  Where they are relative to the source isn't
> important to me at the moment.

This looks OK to me.  dwmw2, do you have any issues with this?

josh

Re: autoconf for mtd-utils

[Josh Boyer]

On 8/2/06, Josh Boyer <jwboyer@gmail.com> wrote:
> On 8/1/06, David Byron <dbyron@hheld.com> wrote:
> > I do define BUILDDIR for native builds too, but to the current directory.
> > The important thing for me is that native objects live in a different place
> > than cross-compiled objects.  Where they are relative to the source isn't
> > important to me at the moment.
>
> This looks OK to me.  dwmw2, do you have any issues with this?

I've committed this patch.  Thanks again David.

josh