Here is a Makefile for building various portlibs for 3DS.

Type:

$ make

or:

$ make all

to download and install all the libraries at once.

You can build and install the libraries separately:

$ make zlib
$ make install-zlib
$ make <targets>
$ make install

This will install the portlibs to $DEVKITPRO/portlibs/armv6k. If this is a privileged location, you will need to sudo make install-zlib and sudo make install in order for the portlibs to be installed.

Currently supports the following portlibs:

• freetype (requires zlib)
• libexif
• libjpeg-turbo
• libpng (requires zlib)
• sqlite
• zlib

Download links:

• [freetype-2.5.5.tar.bz2] (http://download.savannah.gnu.org/releases/freetype/freetype-2.5.5.tar.bz2)
• [libexif-0.6.21.tar.bz2] (http://sourceforge.net/projects/libexif/files/libexif/0.6.21/libexif-0.6.21.tar.bz2/download)
• [libjpeg-turbo-1.4.0.tar.gz] (http://sourceforge.net/projects/libjpeg-turbo/files/1.4.0/libjpeg-turbo-1.4.0.tar.gz/download)
• [libpng-1.6.17.tar.xz] (http://prdownloads.sourceforge.net/libpng/libpng-1.6.17.tar.xz?download)
• [sqlite-autoconf-3081002.tar.gz] (http://www.sqlite.org/2015/sqlite-autoconf-3081002.tar.gz)
• [zlib-1.2.8.tar.gz] (http://prdownloads.sourceforge.net/libpng/zlib-1.2.8.tar.gz?download)