[GRASS-dev] problem building 7.2.1RC1 for UbuntuGIS

[Sebastiaan Couwenberg]

On 04/08/2017 12:38 PM, Martin Landa wrote:
> I am trying to solve problem with building 7.2.1RC1 for UbuntuGIS, see [1]:
> 
> """
> 
> /usr/lib/gcc/x86_64-linux-gnu/5/../../../x86_64-linux-gnu/Scrt1.o: In
> function `_start':
> (.text+0x20): undefined reference to `main'
> collect2: error: ld returned 1 exit status
> ../../include/Make/Shlib.make:10: recipe for target
> '/<<PKGBUILDDIR>>/dist.x86_64-pc-linux-gnu/lib/libgrass_datetime.7.2.1RC1.so'
> failed
> make[5]: *** [/<<PKGBUILDDIR>>/dist.x86_64-pc-linux-gnu/lib/libgrass_datetime.7.2.1RC1.so]
> Error 1
> make[5]: Leaving directory '/<<PKGBUILDDIR>>/lib/datetime'
> """

That's for this command:

 gcc -shared -o
/<<PKGBUILDDIR>>/dist.x86_64-pc-linux-gnu/lib/libgrass_datetime.7.2.1RC1.so
-L/<<PKGBUILDDIR>>/dist.x86_64-pc-linux-gnu/lib
-L/<<PKGBUILDDIR>>/dist.x86_64-pc-linux-gnu/lib -Wl,-Bsymbolic-functions
-fPIE -pie -Wl,-z,relro -Wl,-z,now -Wl,--export-dynamic
-Wl,-rpath-link,/<<PKGBUILDDIR>>/dist.x86_64-pc-linux-gnu/lib
-Wl,-soname,libgrass_datetime.7.2.1RC1.so
OBJ.x86_64-pc-linux-gnu/between.o OBJ.x86_64-pc-linux-gnu/change.o
OBJ.x86_64-pc-linux-gnu/copy.o OBJ.x86_64-pc-linux-gnu/diff.o
OBJ.x86_64-pc-linux-gnu/error.o OBJ.x86_64-pc-linux-gnu/format.o
OBJ.x86_64-pc-linux-gnu/incr1.o OBJ.x86_64-pc-linux-gnu/incr2.o
OBJ.x86_64-pc-linux-gnu/incr3.o OBJ.x86_64-pc-linux-gnu/local.o
OBJ.x86_64-pc-linux-gnu/misc.o OBJ.x86_64-pc-linux-gnu/same.o
OBJ.x86_64-pc-linux-gnu/scan.o OBJ.x86_64-pc-linux-gnu/sign.o
OBJ.x86_64-pc-linux-gnu/type.o OBJ.x86_64-pc-linux-gnu/tz1.o
OBJ.x86_64-pc-linux-gnu/tz2.o OBJ.x86_64-pc-linux-gnu/values.o   -lm

> Any idea by chance? Building via vagrant [2] on xenial works. Thanks, Ma

None of the objects files have a main() function, which makes sense for
a library. It may be related to PIE, you can try building without it.

You should compare the build logs for the launchpad and vagrant builds.
The differences should help you find the cause.

> [1] https://launchpadlibrarian.net/314562052/buildlog_ubuntu-xenial-amd64.grass_7.2.1~rc1-1~exp1~xenial1_BUILDING.txt.gz
> [2] https://trac.osgeo.org/grass/browser/grass/branches/releasebranch_7_2/Vagrantfile

Kind Regards,

Bas

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