Zlib 1.2.5 compilation is failing

[Ch. Exner <c.exe@…>]

Hi OpenWRT-Team and developers,

when I try to build zlib version 1.2.5 under OpenWRT trunk revision 25299 it fails to compile. The error message is:

*** No rule to make target `libz.so.1.2.5'. Stop.

Please see the attaches files for more information.

Thanks.

[Ch. Exner <c.exe@…>]

Zlib 1.2.5 build log

[Ch. Exner <c.exe@…>]

OpenWRT trunk revision 25299 config file

[Ch. Exner <c.exe@…>]

Short buildhost information

[jow]

None of the buildbots is seeing zlib issues, I don't see them here either - therfore I assume its an issue with your environment (automake, libtool?)

[dev@…]

Yes its right, the problem is the build environment but it can (should) be fixed in OpenWrt (because my build env is OpenWrt - but I divided toolchain and firmware into two projects as can be seen on Bug #9131).

Thats zlibs output when using the same build environment with the extern toolchain method:

Tested arm-openwrt-linux-uclibcgnueabi-gcc -w -c -Os -pipe -march=armv5te -mtune=arm926ej-s -funit-at-a-time -msoft-float -fpic -fPIC ztest10501.c
cc1: note: someone does not honour COPTS correctly, passed 0 times
Tested arm-openwrt-linux-uclibcgnueabi-gcc -shared -Wl,-soname,libz.so.1 -Os -pipe -march=armv5te -mtune=arm926ej-s -funit-at-a-time -msoft-float -fpic -fPIC -o ztest10501.so ztest10501.o
No shared library support; try without defining CC and CFLAGS
Building static library libz.a version 1.2.5 with arm-openwrt-linux-uclibcgnueabi-gcc.

Problem is, in rules.mk the '-fhonour-copts' flag is only set when external toolchain is not set. And without this, zlib will not build the needed shared library.

So the solution seems easy to me: enable -fhonour-copts also for external toolchains.

Thanks in advance,

Sven

[dev@…]

patch to always enable -fhonour-copts in rules.mk

[Sven Bachmann <dev@…>]

Adjusted patch to current trunk (rev 27109).

​https://dev.openwrt.org/attachment/ticket/8786/0001-rules.mk-always-enable-fhonour-copts.patch

[mirko]

external compilers may fail because not recognizing '-fhonour-copts'

what's about appending '-fhonour-copts' always just for zlib (as 'TARGET_CFLAGS += -fhonour-copts' in package/zlib?)

[mirko]

Replying to mirko:

external compilers may fail because not recognizing '-fhonour-copts'

what's about appending '-fhonour-copts' always just for zlib (as 'TARGET_CFLAGS += -fhonour-copts' in package/zlib?)

That doesn't make sense, since compilers not recognizing '-fhonour-copts' will still fail.

[nbd]

fixed in r27771

[martonmiklosqdev@…]

Hello,

I am trying to compile the libyasdi package using the OpenWrt-SDK-ar71xx-for-Linux-i686-gcc-4.3.3+cs_uClibc-0.9.30.1 (backfire rc5). I have downloaded the package makefiles from the svn trunk. The -fhonour-copts is present in the CFLAGS, but the compilation still failin. Any ideas?

[jow]

Milestone Attitude Adjustment 12.09 deleted