Ports: Replace manually linking libxml2 with a libtool patch

Ports/libxml2/package.sh

@@ -6,12 +6,4 @@ use_fresh_config_sub=true
 files="https://download.gnome.org/sources/libxml2/2.9/libxml2-${version}.tar.xz libxml2-${version}.tar.xz 276130602d12fe484ecc03447ee5e759d0465558fbc9d6bd144e3745306ebf0e"
 auth_type=sha256
 depends=("libiconv" "xz")
-configopts=("--with-sysroot=${SERENITY_INSTALL_ROOT}" "--prefix=/usr/local" "--without-python")
-
-install() {
-    run make DESTDIR="${SERENITY_INSTALL_ROOT}" install
-
-    # Link shared library
-    run ${SERENITY_ARCH}-pc-serenity-gcc -shared -o ${SERENITY_INSTALL_ROOT}/usr/local/lib/libxml2.so -Wl,-soname,libxml2.so -Wl,--whole-archive ${SERENITY_INSTALL_ROOT}/usr/local/lib/libxml2.a -Wl,--no-whole-archive -llzma
-    rm -f ${SERENITY_INSTALL_ROOT}/usr/local/lib/libxml2.la
-}
+configopts=("--with-sysroot=${SERENITY_INSTALL_ROOT}" "--prefix=/usr/local" "--without-python" "--disable-static" "--enable-shared")

Ports/libxml2/patches/0001-libtool-Enable-shared-library-support-for-SerenityOS.patch

@@ -0,0 +1,76 @@
+From 897e1d8be1554c6588941574e620a90600b024d0 Mon Sep 17 00:00:00 2001
+From: Tim Schumacher <timschumi@gmx.de>
+Date: Sun, 29 May 2022 15:01:28 +0200
+Subject: [PATCH] libtool: Enable shared library support for SerenityOS
+
+For some odd reason, libtool handles the configuration for shared
+libraries entirely statically and in its configure script. If no
+shared library support is "present", building shared libraries is
+disabled entirely.
+
+Fix that by just adding the appropriate configuration options for
+`serenity`. This allows us to finally create dynamic libraries
+automatically using libtool, without having to manually link the
+static library into a shared library.
+---
+ configure | 23 +++++++++++++++++++++++
+ 1 file changed, 23 insertions(+)
+
+diff --git a/configure b/configure
+index 6156015..cfd0935 100755
+--- a/configure
++++ b/configure
+@@ -6148,6 +6148,10 @@ tpf*)
+ os2*)
+   lt_cv_deplibs_check_method=pass_all
+   ;;
++
++serenity*)
++  lt_cv_deplibs_check_method=pass_all
++  ;;
+ esac
+ 
+ fi
+@@ -9300,6 +9304,10 @@ lt_prog_compiler_static=
+       lt_prog_compiler_static='-Bstatic'
+       ;;
+ 
++    serenity*)
++      lt_prog_compiler_can_build_shared=yes
++      ;;
++
+     *)
+       lt_prog_compiler_can_build_shared=no
+       ;;
+@@ -10822,6 +10830,10 @@ $as_echo "$lt_cv_irix_exported_symbol" >&6; }
+       hardcode_shlibpath_var=no
+       ;;
+ 
++    serenity*)
++      ld_shlibs=yes
++      ;;
++
+     *)
+       ld_shlibs=no
+       ;;
+@@ -11902,6 +11914,17 @@ uts4*)
+   shlibpath_var=LD_LIBRARY_PATH
+   ;;
+ 
++serenity*)
++  version_type=linux
++  need_lib_prefix=no
++  need_version=no
++  library_names_spec='${libname}${release}${shared_ext}${versuffix} ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
++  soname_spec='${libname}${release}${shared_ext}${major}'
++  shlibpath_var=LD_LIBRARY_PATH
++  shlibpath_overrides_runpath=no
++  dynamic_linker='SerenityOS LibELF'
++  ;;
++
+ *)
+   dynamic_linker=no
+   ;;
+-- 
+2.36.1
+

Ports/libxml2/patches/ReadMe.md

@@ -0,0 +1,16 @@
+# Patches for libxml2 on SerenityOS
+
+## `0001-libtool-Enable-shared-library-support-for-SerenityOS.patch`
+
+libtool: Enable shared library support for SerenityOS
+
+For some odd reason, libtool handles the configuration for shared
+libraries entirely statically and in its configure script. If no
+shared library support is "present", building shared libraries is
+disabled entirely.
+
+Fix that by just adding the appropriate configuration options for
+`serenity`. This allows us to finally create dynamic libraries
+automatically using libtool, without having to manually link the
+static library into a shared library.
+