configure: Use $CC and $CXX as default compilers if set

This change causes .travis.yml to use the compilers configured in the $CC
and $CXX variables. Additionally, make the configure script show the
compiler names.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

1 files changed, 4 insertions, 2 deletions

diff --git a/configure b/configure
index c02a978..223192b 100755
--- a/configure
+++ b/configure
@@ -9,8 +9,8 @@ else
     TMPDIR1="/tmp"
 fi
 
-cc=gcc
-cxx=g++
+cc=${CC:-gcc}
+cxx=${CXX:-g++}
 
 for opt do
   optarg=$(expr "x$opt" : 'x[^=]*=\(.*\)')
@@ -315,7 +315,9 @@ if test "$has_cxx" = "yes"; then
 fi
 
 echo "CC=$cc" >> $config_host_mak
+print_config "CC" "$cc"
 echo "CXX=$cxx" >> $config_host_mak
+print_config "CXX" "$cxx"
 
 # generate compat.h
 compat_h="src/include/liburing/compat.h"