Ports: Replace manually linking libjpeg with a libtool patch

Author: https://github.com/timschumi
Commit: https://github.com/SerenityOS/serenity/commit/c7faa3a229
Pull-request: https://github.com/SerenityOS/serenity/pull/14178
Reviewed-by: https://github.com/linusg ✅

Ports/libjpeg/package.sh

@@ -2,12 +2,7 @@
 port=libjpeg
 version=9e
 useconfigure=true
+configopts=("--disable-static" "--enable-shared")
 files="https://ijg.org/files/jpegsrc.v${version}.tar.gz jpeg-${version}.tar.gz 4077d6a6a75aeb01884f708919d25934c93305e49f7e3f36db9129320e6f4f3d"
 auth_type=sha256
 workdir="jpeg-$version"
-
-install() {
-    run make DESTDIR=${SERENITY_INSTALL_ROOT} "${installopts[@]}" install
-    ${CC} -shared -o ${SERENITY_INSTALL_ROOT}/usr/local/lib/libjpeg.so -Wl,-soname,libjpeg.so -Wl,--whole-archive ${SERENITY_INSTALL_ROOT}/usr/local/lib/libjpeg.a -Wl,--no-whole-archive
-    rm -f ${SERENITY_INSTALL_ROOT}/usr/local/lib/libjpeg.la
-}

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

@@ -0,0 +1,76 @@
+From 9847675448e5a0169589de8610c0c96463d157b0 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 9e1d1fc..a95ac5d 100755
+--- a/configure
++++ b/configure
+@@ -7089,6 +7089,10 @@ tpf*)
+ os2*)
+   lt_cv_deplibs_check_method=pass_all
+   ;;
++
++serenity*)
++  lt_cv_deplibs_check_method=pass_all
++  ;;
+ esac
+ 
+ fi
+@@ -10551,6 +10555,10 @@ lt_prog_compiler_static=
+       lt_prog_compiler_static='-Bstatic'
+       ;;
+ 
++    serenity*)
++      lt_prog_compiler_can_build_shared=yes
++      ;;
++
+     *)
+       lt_prog_compiler_can_build_shared=no
+       ;;
+@@ -12081,6 +12089,10 @@ printf "%s\n" "$lt_cv_irix_exported_symbol" >&6; }
+       hardcode_shlibpath_var=no
+       ;;
+ 
++    serenity*)
++      ld_shlibs=yes
++      ;;
++
+     *)
+       ld_shlibs=no
+       ;;
+@@ -13153,6 +13165,17 @@ uts4*)
+   shlibpath_var=LD_LIBRARY_PATH
+   ;;
+ 
++serenity*)
++  version_type=linux
++  need_lib_prefix=no
++  need_version=no
++  library_names_spec='${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/libjpeg/patches/ReadMe.md

@@ -0,0 +1,16 @@
+# Patches for libjpeg 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.
+