Cleanup suppress function (#72)

.travis.yml

@@ -7,6 +7,10 @@ branches:
   - master
   - devel
   
+cache:
+  directories:
+   - $HOME/.ccache
+
 matrix:
   allow_failures:
   - osx_image: xcode8.3

common_utils.sh

@@ -18,6 +18,11 @@ if [ $(uname) == "Darwin" ]; then IS_OSX=1; fi
 # https://github.com/direnv/direnv/issues/210
 shell_session_update() { :; }
 
+# Start a process that runs as a keep-alive
+# to avoid travis quitting if there is no output
+
+(while true; do >&2 echo "Travis-CI keep-alive"; sleep 480; done) &
+
 function abspath {
     python -c "import os.path; print(os.path.abspath('$1'))"
 }
@@ -61,6 +66,14 @@ function gh-clone {
     git clone https://github.com/$1
 }
 
+function suppress {
+    # Suppress the output of a bash command unless it fails
+    out=$( ( $@ ) 2>&1 )
+    ret=$?
+    [ "$ret" -eq 0 ] || >&2 echo "$out" # if $? (the return of the last run command) is not zero, cat the temp file
+    return "$ret" # return the exit status of the command
+}
+
 function rm_mkdir {
     # Remove directory if present, then make directory
     local path=$1

manylinux_utils.sh

@@ -56,7 +56,7 @@ function activate_ccache {
     ln -s /parent-home/.ccache $HOME/.ccache
 
     # Now install ccache
-    yum install -y ccache
+    suppress yum install -y ccache
 
     # Create fake compilers and prepend them to the PATH
     # Note that yum is supposed to create these for us,

tests/test_library_builders.sh

@@ -6,18 +6,6 @@ source library_builders.sh
 
 # set -e -x
 
-function print_failure {
-    cat $HOME/suppress.out 
-    exit 1
-}
-
-function suppress {
-    # Suppress the output of a bash command unless it fails
-    rm -f $HOME/suppress.out 2> /dev/null || true
-    $* 2>&1 > $HOME/suppress.out || print_failure
-    rm $HOME/suppress.out
-}
-
 if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update; fi
 
 suppress build_openssl