[PATCH] reproducible builds: strip embedded file paths

[Xiang W]

在 2021-11-22星期一的 10:13 +0530，Anup Patel写道：
> On Mon, Nov 22, 2021 at 10:02 AM Vagrant Cascadian
> <vagrant at reproducible-builds.org> wrote:
> > 
> > On 2021-11-22, Xiang W. wrote:
> > > 在 2021-11-21星期日的 11:20 -0800，Vagrant Cascadian写道：
> > > > of the directories below, I built using the same toolchain from
> > > > the same git commit...
> > > > 
> > > > $ cd /home/vagrant/src/opensbi/opensbi1
> > > > $ CROSS_COMPILE=riscv64-linux-gnu- make V=1 FW_PAYLOAD=n
> > > > PLATFORM=generic
> > > > ...
> > > > $ strings build/platform/generic/firmware/fw_dynamic.bin | grep
> > > > /home/vagrant
> > > > /home/vagrant/src/opensbi/opensbi1/lib/sbi/riscv_asm.c
> > ...
> > > This is because the source file uses the absolute path when
> > > compiling,
> > > you can use the relative path by modifying the Makefile
> > > 
> > > diff --git a/Makefile b/Makefile
> > > index 8623c1c..d017534 100644
> > > --- a/Makefile
> > > +++ b/Makefile
> > > @@ -361,7 +361,7 @@ compile_cc_dep = $(CMD_PREFIX)mkdir -p
> > > `dirname
> > > $(1)`; \
> > >              -MM $(2) >> $(1) || rm -f $(1)
> > >  compile_cc = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
> > >            echo " CC        $(subst $(build_dir)/,,$(1))"; \
> > > -          $(CC) $(CFLAGS) $(call dynamic_flags,$(1),$(2)) -c
> > > $(2) -
> > > o $(1)
> > > +          $(CC) $(CFLAGS) $(call dynamic_flags,$(1),$(2)) -c
> > > $(subst $(src_dir)/,,$(2)) -o $(1)
> > >  compile_as_dep = $(CMD_PREFIX)mkdir -p `dirname $(1)`; \
> > >            echo " AS-DEP    $(subst $(build_dir)/,,$(1))"; \
> > >            printf %s `dirname $(1)`/ > $(1) && \
> > 
> > That solves the issue and is probably better than passing more
> > compiler
> > arguments, thanks!
> 
> This will only work if we are compiling from the OpenSBI source
> directory
> itself. What if users compile OpenSBI with a different current
> directory
> using "make -C <opensbi_source_path>". I guess passing compiler
> argument will allow "make -C <opensbi_source_path>".

make -C <directory> will switch the path to <directory> first, so the
result is the same.

Regards,
Xiang W

> 
> Regards,
> Anup
> 
> > 
> > 
> > live well,
> >   vagrant
> > --
> > opensbi mailing list
> > opensbi at lists.infradead.org
> > http://lists.infradead.org/mailman/listinfo/opensbi