Build libzip manually

.travis.yml

@@ -7,7 +7,7 @@ php:
 addons:
   apt:
     packages:
-    - libzip-dev
+    - cmake
 
 before_install:
 - echo "phar.readonly = 0" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini

tests/makephar.sh

@@ -58,6 +58,11 @@ cd ..
 
 [ $PHP_MAJOR_VERSION -eq 5 ] && {
     git clone https://github.com/php-build/php-build $(phpenv root)/plugins/php-build
+    git clone -b rel-1-5-1 https://github.com/nih-at/libzip.git
+    cd libzip
+    cmake -DCMAKE_INSTALL_PREFIX=/home/derick/.phpenv/versions/7.3.6 .
+    make -j11
+    make install
     phpenv install 7.3.6
 
     ~/.phpenv/versions/7.3.6/bin/php $php7to5 convert --copy-all phar7 phar5 >/dev/null