[...]

poldek: Preparing...                ##################################################
poldek: 	file /usr/share/java/ecj.jar from install of java-ecj-4.9-2.noarch conflicts with file from package libgcj-4.8.5-4.i686
no conflicts found
checking BR
rpm: error: Failed build dependencies:
rpm: 	java-ecj >= 4.9 is needed by gcc-6.3.0-2.src
rpm: 	python-devel is needed by gcc-6.3.0-2.src
rpm: Building target platforms: i686-tld-linux
installing BR: python\-devel java\-ecj
Can't find java virtual machine, aborting.
+ poldek --noask --caplookup -Q -v --upgrade python-devel java-ecj
Loading [pndir]local...
Loading [pndir]ti-dev...
Loading [pndir]ti-dev...
Loading [pndir]ti-dev-test...
Loading [pndir]ti-dev-test...
6511 packages read
Removed 620 duplicate packages from available set
Processing dependencies...
There are 1 package to install:
I python-devel-2.7.13-1.i686
This operation will use 691.4KB of disk space.
Need to get 318.0KB of archives. 
Executing pm-command.sh --upgrade -vh --root / --define _check_dirname_deps 1...
Preparing...                ##################################################
python-devel                ##################################################
Installing set #2
Processing dependencies...
java-ecj-4.9-2.noarch marks icedtea7-jre-2.5.4-2.i686 (cap jre)
 icedtea7-jre-2.5.4-2.i686 marks icedtea7-jre-base-2.5.4-2.i686 (cap icedtea7-jre-base = 2.5.4-2)
There are 3 packages to install (2 marked by dependencies):
I java-ecj-4.9-2.noarch
D icedtea7-jre-2.5.4-2.i686  icedtea7-jre-base-2.5.4-2.i686
This operation will use 74.5MB of disk space.
Need to get 43.0MB of archives. 
Executing pm-command.sh --upgrade -vh --root / --define _check_dirname_deps 1...
Preparing...                ##################################################
	file /usr/share/java/ecj.jar from install of java-ecj-4.9-2.noarch conflicts with file from package libgcj-4.8.5-4.i686
error: BR installation failed
Can't find java virtual machine, aborting.
mesg: ttyname failed: Inappropriate ioctl for device
+ chmod -R u+rwX /tmp/B.oCs4eK/BUILD
+ rm -rf /tmp/B.oCs4eK/tmp /tmp/B.oCs4eK/BUILD
Can't find java virtual machine, aborting.
mesg: ttyname failed: Inappropriate ioctl for device
+ rm -rf /tmp/B.oCs4eK
Begin-TLD-Builder-Info
Build-Time: user:3.71s sys:0.77s real:37.71s (faults io:0 non-io:129417)
End-TLD-Builder-Info