activate windows cross compilation

.travis.yml

@@ -4,14 +4,16 @@ matrix:
  include:
  - compiler: clang
  - compiler: gcc
-# - compiler: gcc
-# env: HOST=i686-w64-mingw32
+  - compiler: gcc
+  env: HOST=i686-w64-mingw32
 
 env:
  global:
  - PKG_CONFIG_PATH=/tmp/install/lib/pkgconfig
  - PREFIX=/tmp/install
  - PYTHONPATH=$PYTHONPATH:$PREFIX/lib/python2.7/site-packages/
+ - ac_cv_func_malloc_0_nonnull=yes
+ - ac_cv_func_realloc_0_nonnull=yes
  # The next declaration is the encrypted COVERITY_SCAN_TOKEN, created
  # via the "travis encrypt" command using the project repo's public key
  - secure: "M+eNZPASDoFdWZUeSyu4whvPKaOwd0AlCmGWKc7SRbQPD8x8Ao8y3+kr++YonsWBnDUqQSNg3v4uWsJOo2Q57qMQ+FYcNlEjrYpXXSRdH4BnYnTH1WfNnTce7N5Bln9wxE+khe7cZJcxy+gvd+YiutQvHjT+bTzrs2MtHD0Odlw="
@@ -37,7 +39,6 @@ before_script:
  ./configure --prefix=$PREFIX --enable-openssl-install --enable-python;
  else
  export CROSS_COMPILE=$HOST-;
- export ac_cv_func_malloc_0_nonnull=yes;
  unset CC;
  ./configure --prefix=$PREFIX --enable-openssl-install --host=$HOST --enable-openssl-install;
  touch src/cvc-create.1 src/cvc-print.1;
@@ -56,13 +57,18 @@ before_script:
  else
  unset CC;
  unset CXX;
- export ac_cv_func_malloc_0_nonnull=yes;
  ./configure --prefix=$PREFIX --host=$HOST LDFLAGS="-I$PREFIX/include" CFLAGS="-I$PREFIX/include" CXXFLAGS="-I$PREFIX/include" LIBS="-I$PREFIX/include";
- cat config.log;
  fi
  - make install
  # Configure libnpa
- - cd $TRAVIS_BUILD_DIR/npa && autoreconf -vsi && env ac_cv_func_malloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yes ./configure --host=$HOST OPENSC_LIBS="-L$PREFIX/lib -lopensc -lcrypto" && touch src/npa-tool.1
+ - cd $TRAVIS_BUILD_DIR/npa
+ - autoreconf -vsi
+ - if [ -z "$HOST" ]; then
+ ./configure OPENSC_LIBS="-L$PREFIX/lib -lopensc -lcrypto";
+ else
+ ./configure --host=$HOST OPENSC_LIBS="-L$PREFIX/lib -lopensc -lcrypto";
+ touch src/npa-tool.1;
+ fi
  # Configure virtualsmartcard
  - cd $TRAVIS_BUILD_DIR/virtualsmartcard && autoreconf -vsi
  - if [ -z "$HOST" ]; then