Squashed commit of the following:

commit 1f42169f0f929958f7d68a68f194c6f3492b7eb4
Author: Dylan K. Taylor <odigiman@gmail.com>
Date:   Mon Dec 14 21:23:44 2020 +0000

    ... install it in the right fucking place

commit d2a88abeda5fa937d3f508c4e0300a949af97846
Author: Dylan K. Taylor <odigiman@gmail.com>
Date:   Mon Dec 14 21:14:21 2020 +0000

    Build PHP using system libraries to reduce rebuild time

.github/workflows/main.yml

@@ -24,13 +24,11 @@ jobs:
         uses: actions/cache@v2
         with:
           path: "./bin"
-          key: "php-build-generic-${{ hashFiles('./build/php/compile.sh') }}"
+          key: "php-build-generic-${{ hashFiles('./tests/gh-actions/build.sh') }}"
 
       - name: Compile PHP
         if: steps.php-build-cache.outputs.cache-hit != 'true'
-        run: |
-          sudo apt update && sudo apt install -y re2c libtool libtool-bin
-          march=x86-64 ./build/php/compile.sh -j8
+        run: ./tests/gh-actions/build.sh
 
       - name: Prefix PHP to PATH
         run: echo "$(pwd)/bin/php7/bin" >> $GITHUB_PATH

tests/gh-actions/build.sh

@@ -0,0 +1,54 @@
+VERSION=7.4.13
+sudo apt update && sudo apt install -y \
+	re2c \
+	libtool \
+	libtool-bin \
+	zlib1g-dev \
+	libcurl4-openssl-dev \
+	libxml2-dev \
+	libyaml-dev \
+	libgmp-dev \
+	libzip-dev \
+	libssl-dev
+
+curl -sSL https://www.php.net/distributions/php-$VERSION.tar.gz | tar -xz
+
+INSTALL_DIR="$(pwd)/bin/php7"
+cd php-$VERSION
+cd ext/
+curl -sSL https://github.com/pmmp/pthreads/archive/2bcd8b8c10395d58b8a9bc013e3a5328080c867f.tar.gz | tar -xz
+curl -sSL https://github.com/php/pecl-file_formats-yaml/archive/2.2.0.tar.gz | tar -xz
+cd ..
+
+CFLAGS="$CFLAGS -march=x86-64"
+CXXFLAGS="CXXFLAGS -march=x86-64"
+
+./buildconf --force
+./configure \
+	--prefix="$INSTALL_DIR" \
+	--exec-prefix="$INSTALL_DIR" \
+	--enable-maintainer-zts \
+	--enable-cli \
+	--disable-cgi \
+	--disable-phpdbg \
+	--disable-session \
+	--without-pear \
+	--without-sqlite3 \
+	--disable-pdo \
+	--enable-pthreads \
+	--with-yaml \
+	--with-libxml \
+	--enable-xml \
+	--enable-simplexml \
+	--enable-xmlreader \
+	--enable-xmlwriter \
+	--enable-mbstring \
+	--disable-mbregex \
+	--enable-sockets \
+	--with-curl \
+	--with-zlib \
+	--with-zip \
+	--with-gmp \
+	--with-openssl
+
+make -j8 install