1.diff

diff --git a/PKGBUILD b/PKGBUILD
index b051503..2c64ea3 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -6,7 +6,7 @@ pkgdesc='PDFium binaries built with scripts from pdfium-binaries'
 arch=('x86_64')
 url='https://github.com/bblanchon/pdfium-binaries'
 license=('Apache')
-makedepends=('git' 'ninja' 'cmake' 'pkgconf')
+makedepends=('git' 'ninja' 'cmake' 'pkgconf' 'python' 'procps-ng')
 provides=('libpdfium')
 conflicts=('libpdfium-nojs' 'pdfium-binaries-v8')
 
@@ -20,17 +20,18 @@ sha512sums=(
        "195ba1bc0faf933343b753bc8cb3b54b73f02b8400202d461807a8aecc1b06cfe2bff200c614b7bd851650a2eb83b1bdcb54fc6cf49c250b605fb61cbe3c5008"
 )
 
-build() {
-       _src_dir="${srcdir}"/pdfium-binaries-chromium-${pkgver}
-       cd ${_src_dir}
-
+prepare() {
+       cd "${srcdir}"/pdfium-binaries-chromium-${pkgver}
        patch --forward --strip=1 --input="${srcdir}/001-apt-get.patch"
+}
 
+build() {
+       cd "${srcdir}"/pdfium-binaries-chromium-${pkgver}
        ./build.sh -b chromium/${pkgver} linux x64
 }
 
 package() {
-       _src_dir="${srcdir}"/pdfium-binaries-chromium-${pkgver}
+       local _src_dir="${srcdir}"/pdfium-binaries-chromium-${pkgver}
        install -Dm644 ${_src_dir}/staging/LICENSE "${pkgdir}"/usr/share/licenses/pdfium/LICENSE
        install -Dm644 ${_src_dir}/staging/PDFiumConfig.cmake "${pkgdir}"/usr/lib/cmake/PDFium/PDFiumConfig.cmake
        cp -ar ${_src_dir}/staging/include "${pkgdir}"/usr