[OpenWrt-Devel] kirkwood gcc/binutils woe?

[Felix Fietkau]

On 2014-12-14 12:02, Harald Geyer wrote:
> nwf writes:
>> $ gcc -v -o hello hello.c [...]
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/collect2
>> --eh-frame-hdr -dynamic-linker /lib/ld-uClibc.so.0
>> -X -m armelf_linux_eabi -o hello
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/crt1.o
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/crti.o
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/crtbegin.o
>> -L/usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3
>> -L/usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/../../..
>> /tmp/ccjOqw9X.o -lgcc_s -lc -lgcc_s
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/crtend.o
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/crtn.o /usr/bin/ld:
>> cannot find -lgcc collect2: error: ld returned 1 exit status
>> 
>> Well, yes, that's true...
>> 
>> $ find / -name \*libgcc\* /lib/libgcc_s.so.1
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/libgcc_s.so.1
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/libgcc_s.so
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/libgcc.map
>> /usr/lib/opkg/info/libgcc.list /usr/lib/opkg/info/libgcc.control
>> 
>> Grepping about at random I find that
>> /usr/lib/gcc/arm-openwrt-linux-uclibcgnueabi/4.8.3/libgcc_s.so contains
>> the directive
>> 
>> > GROUP ( libgcc_s.so.1 -lgcc )
> 
> Actually citing libgcc_s.so in full makes things a bit clearer:
> $ cat libgcc_s.so
> /* GNU ld script
>    Use the shared library, but some functions are only in
>    the static library.  */
> GROUP ( libgcc_s.so.1 -lgcc )
> 
>> So I think the desire to save space expressed in
>> feeds/packages/devel/gcc/README is well-intentioned but possibly stale,
>> so maybe the following, too? Maybe we should be removing libgcc_pic.a
>> but not libgcc.a?
> 
> Seems reasonable. Since gcc seems to work for Christian as is, this
> might be architecture dependent. Christian, any insight on this?
> 
> As far as binutils is concerned the patch below seems to work as expected,
> so I can now add my
> Signed-off-by: Harald Geyer <harald at ccbib.org>
> 
> Felix, can you take this as is or should I resend the patch?
Removing libgcc_pic.a and adding libgcc.a makes sense to me.
You could remove libgcc_pic.a by removing 820-libgcc_pic.patch

- Felix
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