Cannot compile: “./.libs/libelemental.so: undefined reference to `rb_set_inherit'”

[progval]

$ make -j4
[…]
  CCLD     libelemental.la
  CCLD     ircd
./.libs/libelemental.so: undefined reference to `rb_set_inherit'
collect2: error: ld returned 1 exit status
Makefile:575: recipe for target 'ircd' failed
make[1]: *** [ircd] Error 1
make[1]: Leaving directory '/home/progval/irc/elemental-ircd/src'
Makefile:445: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1

ld version:

GNU ld (GNU Binutils for Debian) 2.25

gcc version:

Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/4.9/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Debian 4.9.2-10' --with-bugurl=file:///usr/share/doc/gcc-4.9/README.Bugs --enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr --program-suffix=-4.9 --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --with-gxx-include-dir=/usr/include/c++/4.9 --libdir=/usr/lib --enable-nls --with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-vtable-verify --enable-plugin --with-system-zlib --disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo --with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64/jre --enable-java-home --with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.9-amd64 --with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.9-amd64 --with-arch-directory=amd64 --with-ecj-jar=/usr/share/java/eclipse-ecj.jar --enable-objc-gc --enable-multiarch --with-arch-32=i586 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.9.2 (Debian 4.9.2-10)

OS: Debian 8.2

[Xe]

Strange. try this:

$ make clean
$ make

I think the parallel build might be interfering with it?

[progval]

No change.

[ariscop]

Do you have libratbox installed? rb_set_inherit is only in our branch

[progval]

No.

[ariscop]

That is to say do you have the version from debian installed, i'm not sure if they package it separately

[progval]

It is packaged as ircd-ratbox (according to Debian bug 485703). And I don't have it installed.

[ariscop]

current git head compiles fine in a clean container, which sources are you using?

[progval]

git head too

[ariscop]

double check git status?

[progval]

confirmed.

I think the work is on my side now.

[progval]

I set up a clean env:

$ sudo debootstrap jessie chroot/
$ sudo chroot chroot/
# apt-get install libssl-dev autoconf autoconf-archive build-essential flex bison libsqlite3-dev automake libtool
# apt-get install git
# export LANG=C
# export LC_CTYPE=C

Then, I can't even ./configure:

# git clone https://github.com/Elemental-IRCd/elemental-ircd.git
# cd elemental-ircd/
# ./autogen.sh
# ./configure
[…]
./configure: line 15312: syntax error near unexpected token `SQLITE,'
./configure: line 15312: `PKG_CHECK_MODULES(SQLITE, sqlite3 > 3.0.0)'

Of course libsqlite3-dev is installed:

# apt-cache show libsqlite3-dev
Package: libsqlite3-dev
Source: sqlite3
Version: 3.8.7.1-1+deb8u1
[…]

[ariscop]

you need pkg-config, it provides the PKG_CHECK_MODULES macro

[progval]

I found the issue. As you said, it's because I have another version of libratbox installed.

But I did not find it at first, because it is in $PREFIX/lib/libratbox.so, and usually, applications do not look at $PREFIX outside the make install part.

Feel free to close this if you don't consider it as an issue.

[Xe]

This is really interesting. It may not be a direct bug in Elemental (a side effect of the circumstance of already having ratbox installed in $PREFIX), but it's probably indirectly caused by #94 I think.

[ariscop]

#94 would work around the issue, i don't think it should be searching the system path at all though, long as we have our own libratbox