language: cpp
compiler:
  - gcc
install:
  - sudo apt-get install gcc-multilib g++-multilib cmake
before_script:
  - cmake . -DCMAKE_C_FLAGS=-m32 -DCMAKE_CXX_FLAGS=-m32
script:
  - make
  - make package

language: cpp
compiler:
  - gcc
install:
  - sudo apt-get update -qq
  - sudo apt-get install -y gcc-multilib g++-multilib cmake
before_script:
  - cmake . -DCMAKE_C_FLAGS=-m32 -DCMAKE_CXX_FLAGS=-m32
script:
  - make
  - make package

Fix Travis CI build error
Fix Travis CI build error

Execute "apt-get update" before installing packages.
