Use result of nproc instead of entering a definite number

diff --git a/.travis.yml b/.travis.yml
index 66dfc75..90b5645 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -38,13 +38,13 @@ before_install:
 
  # CMake
  - wget http://www.cmake.org/files/v3.1/cmake-$CMAKE_VERSION.tar.gz -O - | tar xz
- - (cd cmake-$CMAKE_VERSION && cmake . && make -j5 && sudo make install)
+ - (cd cmake-$CMAKE_VERSION && cmake . && make -j $(nproc) && sudo make install)
 
  # SDL dependencies
  - wget http://libsdl.org/release/SDL2-$SDL2_VERSION.tar.gz -O - | tar xz
- - (cd SDL2-$SDL2_VERSION && ./configure --prefix=/usr && make -j5 && sudo make install)
+ - (cd SDL2-$SDL2_VERSION && ./configure --prefix=/usr && make -j $(nproc) && sudo make install)
  - wget http://www.libsdl.org/projects/SDL_image/release/SDL2_image-$SDL2IMAGE_VERSION.tar.gz -O - | tar xz
- - (cd SDL2_image-$SDL2IMAGE_VERSION && ./configure --prefix=/usr && make -j5 && sudo make install)
+ - (cd SDL2_image-$SDL2IMAGE_VERSION && ./configure --prefix=/usr && make -j $(nproc) && sudo make install)
 
 script:
  # Clean from previous Travis build
@@ -68,7 +68,7 @@ addons:
       description: "Build submitted via Travis CI"
     notification_email: supertux-commit@lists.lethargik.org
     build_command_prepend: "cmake . && make clean"
-    build_command:   "make -j 4"
+    build_command:   "make -j $(nproc)"
     branch_pattern: master
 
 notifications: