Move coveralls to after_success in Travis CI

So it won't affect the build result

.travis.yml

@@ -33,6 +33,8 @@ addons:
     - libgtest-dev
     - gcc-10
     - g++-10
+    - python3-pip
+    - python3-setuptools
   homebrew:
     packages:
     - autoconf
@@ -55,7 +57,7 @@ addons:
 
 env:
 - ''
-- BUILD_SUIT=autotools
+- BUILD_SUIT=autotools WITH_COVERALLS=y
 - CC=gcc-10 CXX=g++-10
 - BUILD_SUIT=autotools CC=gcc-10 CXX=g++-10
 
@@ -69,7 +71,7 @@ install:
 - ./.travis/install.sh
 
 script:
-- if [ $TRAVIS_OS_NAME = 'osx' ]; then
+- if [ "$TRAVIS_OS_NAME" = 'osx' ]; then
     export PATH="/usr/local/opt/gettext/bin:/usr/local/opt/icu4c/sbin:/usr/local/opt/icu4c/bin:$PATH";
     export CPPFLAGS="-I/usr/local/opt/gettext/include -I/usr/local/opt/icu4c/include";
     export LDFLAGS="-L/usr/local/opt/gettext/lib -L/usr/local/opt/icu4c/lib";
@@ -79,14 +81,15 @@ script:
     ./configure --enable-debug || cat config.log;
     make -j2 || travis_terminate 1;
     make test || travis_terminate 1;
-  elif [ "$BUILD_SUIT" = "autotools" ]; then
-    export CPPFLAGS="-fprofile-arcs -ftest-coverage";
-    export LIBS="-lgcov";
+  elif [ "$BUILD_SUIT" = 'autotools' ]; then
+    if [ ! -z "$WITH_COVERALLS" ]; then
+      export CPPFLAGS="--coverage";
+      export LIBS="-lgcov";
+    fi;
     ./autogen.sh;
     ./configure --enable-debug || cat config.log;
     make -j2 || travis_terminate 1;
     make test || travis_terminate 1;
-    coveralls --exclude vendor --exclude src --exclude build --exclude tools --exclude libaegisub/windows > /dev/null;
   else
     mkdir build-dir;
     cd build-dir;
@@ -94,3 +97,8 @@ script:
     make -j2 || travis_terminate 1;
     make test || travis_terminate 1;
   fi
+
+after_success:
+- if [ ! -z "$WITH_COVERALLS" ]; then
+    coveralls --exclude vendor --exclude src --exclude build --exclude tools --exclude libaegisub/windows > /dev/null;
+  fi

.travis/install.sh

@@ -6,14 +6,16 @@ if [ "$TRAVIS_OS_NAME" = 'linux' ]; then
   # Remove the CMake provided by travis
   sudo rm -rf /usr/local/cmake*
   if [ "$BUILD_SUIT" = 'autotools' ]; then
-    sudo pip install -U cpp-coveralls;
-    git submodule --quiet init;
-    git submodule --quiet update vendor/googletest;
+    if [ ! -z "$WITH_COVERALLS" ]; then
+      sudo pip3 install -U cpp-coveralls
+    fi
+    git submodule --quiet init
+    git submodule --quiet update vendor/googletest
   else
-    pushd /usr/src/googletest;
-    sudo cmake .;
-    sudo make install -j2;
-    popd;
+    pushd /usr/src/googletest
+    sudo cmake .
+    sudo make install -j2
+    popd
   fi
 fi
 sudo luarocks install busted > /dev/null

README.md

@@ -38,7 +38,7 @@ and optional dependencies:
 You can use the package manager provided by your distro to install these dependencies. Package name varies by distro. Some useful references are:
 
 * For ArchLinux, refer to [AUR](https://aur.archlinux.org/cgit/aur.git/tree/PKGBUILD?h=aegisub-git).
-* For Ubuntu, refer to [Travis](.travis.yml#L14-L35).
+* For Ubuntu, refer to [Travis](.travis.yml#L14-L32).
 * For macOS, see [Special notice for macOS](https://github.com/wangqr/Aegisub/wiki/Special-notice-for-macOS) on project Wiki.
 
 After installing the dependencies, you can clone and build Aegisub with: