#12 building libosmscout-map-agg fails

[knowname]

i installed the following dependencies:

• libagg-dev
• libfreetype6-dev

but libosmscout-map-agg fails with:

make[1]: Entering directory /home/vagrant/libosmscout/libosmscout-map-agg/src' CXXLD libosmscoutmapagg.la /usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libaggfontfreetype.a(libaggfontfreetype_la-agg_font_freetype.o): relocation R_X86_64_32S against.rodata' can not be used when making a shared object; recompile with -fPIC
/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libaggfontfreetype.a: error adding symbols: Bad value
collect2: error: ld returned 1 exit status
make[1]: *** [libosmscoutmapagg.la] Error 1
make[1]: Leaving directory `/home/vagrant/libosmscout/libosmscout-map-agg/src'
make: *** [all-recursive] Error 1

any idea how i can solve this without manually rebuilding libfreetype6-dev ?

[Tim Teulings]

I fear I cannot help you. This could be a distribution depending build problem. I remeber under Debian there was an additional (shared or static) library I had to add to successfully compile (I think it was against freetype).

Looking at: http://packages.ubuntu.com/trusty/amd64/libagg-dev/filelist

...
/usr/lib/libagg.a
/usr/lib/libagg_pic.a
/usr/lib/libaggfontfreetype.a
/usr/lib/libaggfontfreetype_pic.a
/usr/lib/libaggplatformX11.a
/usr/lib/libaggplatformX11_pic.a
/usr/lib/libaggplatformsdl.a
/usr/lib/libaggplatformsdl_pic.a
...

Perhaps you have to link against another version of the .a libraries (the _pic.a one?).

[Joachim Gehrung]

Have the same problem here, on Xubuntu 64bit. Do you remember which lib to install?

[Tim Teulings]

Looking at the history of the libosmscoutmap-agg/configure.ac file, I found this:

KG_CHECK_MODULES(LIBFREETYPE, [freetype2],
HASLIBFREETYPE=true
[AC_SUBST(LIBFREETYPE_CFLAGS)
AC_SUBST(LIBFREETYPE_LIBS)
AC_DEFINE(HAVE_LIB_FREETYPE,1,[libfreetype found])],
[HASFREETYPE=false])

AM_CONDITIONAL(HAVE_LIB_FREETYPE,[test "$HASLIBFREETYPE" = "true"])

PKG_CHECK_MODULES(LIBAGG, [libagg],
[if test "$HASLIBFREETYPE" = "true"; then
LIBAGG_LIBS="-laggfontfreetype_pic $LIBAGG_LIBS"
fi
AC_SUBST(LIBAGG_CFLAGS)
AC_SUBST(LIBAGG_LIBS)])

I assume that this code worked (for some time) under Debian, which was the distribution I used before Arch Linux. Using a "pic" library, would likely solve the compile/link error above. Which library to use may however depend on our actual distribution, since these libraries seems to be named differently on different systems.

[Tim Teulings]

Did my last message help you fixing the problem?