travis: Use docker based builds

Previously we used 10 Trusty environment (VM) based travis jobs with
different gcc and clang versions installed via ubuntu-toolchain-r apt
repository.

We agreed that testing just different gcc/clang versions isn't enough,
it'd be good to test also different glibc and kernel headers, which are
on different distros. Therefore now we test 15 jobs based on various
distros (Debian, Ubuntu, Fedora, openSUSE, centOS).
We still test both gcc/clang, out-of-tree and cross-compilation builds.

Disadvantage of this approach is that it's not obvious compiler and libc
version. Travis C testing environment implementation prints compiler
version ($CC) before installing actually used compiler via docker.
Therefore run ver_linux printing version info and print $CC version in
build.sh.

Implements: #448

Signed-off-by: Petr Vorel <pvorel@suse.cz>
Reviewed-by: Li Wang <liwang@redhat.com>
Acked-by: Cyril Hrubis <chrubis@suse.cz>

1 files changed, 10 insertions, 2 deletions

diff --git a/build.sh b/build.sh
index 4e8357982..ae3b86ff2 100755
--- a/build.sh
+++ b/build.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-# Copyright (c) 2017 Petr Vorel <pvorel@suse.cz>
+# Copyright (c) 2017-2018 Petr Vorel <pvorel@suse.cz>
 # Script for travis builds.
 #
 # TODO: Implement comparison of installed files. List of installed files can
@@ -16,7 +16,7 @@ CONFIGURE_OPTS_IN_TREE="--with-open-posix-testsuite --with-realtime-testsuite"
 # TODO: open posix testsuite is currently broken in out-tree-build. Enable it once it's fixed.
 CONFIGURE_OPTS_OUT_TREE="--with-realtime-testsuite"
 MAKE_OPTS="-j$(getconf _NPROCESSORS_ONLN)"
-CC=
+CC=gcc
 
 build_32()
 {
@@ -152,4 +152,12 @@ while getopts "c:ho:p:t:" opt; do
 done
 
 cd `dirname $0`
+
+echo "=== ver_linux ==="
+./ver_linux
+echo
+
+echo "=== compiler version ==="
+$CC --version
+
 eval build_$build $tree