Description:

There are 3 issues with community/mupdf-1.3-3:
(1) It doesn't use system shared libraries, instead the shipped libraries in
thirdparty/ are used. This is OK for openjpeg 2 (included in thirdparty/), but there is no reason to use e.g. thirdparty/curl which is older than core/curl (7.31 vs 7.32).
(2) The CURL_LIBS="" stanza in PKGBUILD's build() introduced in  FS#36567  is
doing absolutely nothing because curl is compiled-in statically. Even if
thirdparty/curl were removed, this variable wouldn't be picked up (see below).
(3) The header, doc and man files have permissions 0755, which is not really
nice.

Fix:

(1) I suggest to keep only thirdparty/openjpeg (to be dropped when [extra]
catches up) and jbig2dec (is it needed by anything besides mupdf?), and add a prepare() function to PKGBUILD

prepare() {
cd "$srcdir/$pkgname-$pkgver"-source
rm -vrf thirdparty/{curl,freetype,jpeg,zlib}/*
patch -Np1 -i $srcdir/mupdf-system-libcurl.patch
}

(2) The current Makefile is written in such a way, that curl support is
impossible unless thirdparty/curl is used. Thus Makefile has to be patched (see mupdf-system-libcurl.patch taken essentially unchanged from
http://sources.gentoo.org/cgi-bin/viewvc.cgi/gentoo-x86/app-text/mupdf/files/mupdf-9999-sys_curl.patch?view=markup ).

(3) Instead of running chmod on *.a files, why not run it on everything?

# Fix permissions on files
find $pkgdir/usr/include \
$pkgdir/usr/share \
$pkgdir/usr/lib -type f | xargs chmod -v 0644

HTH,
Leonid.