Installing gettext manually on MacOS.

gettext-symlinks.sh

#!/bin/bash

### /usr/local/bin
ln -s /usr/local/gettext/0_20_1/bin/autopoint /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/envsubst /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/gettext /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/gettextize /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/gettext.sh /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgattrib /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgcat /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgcmp /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgcomm /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgconv /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgen /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgexec /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgfilter /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgfmt /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msggrep /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msginit /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgmerge /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msgunfmt /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/msguniq /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/ngettext /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/recode-sr-latin /usr/local/bin/
ln -s /usr/local/gettext/0_20_1/bin/xgettext /usr/local/bin/

### /usr/local/include
ln -s /usr/local/gettext/0_20_1/include/autosprintf.h /usr/local/include/
ln -s /usr/local/gettext/0_20_1/include/gettext-po.h /usr/local/include/
ln -s /usr/local/gettext/0_20_1/include/textstyle /usr/local/include/
ln -s /usr/local/gettext/0_20_1/include/textstyle.h /usr/local/include/

### /usr/local/lib
ln -s /usr/local/gettext/0_20_1/lib/gettext /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libasprintf.a /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libasprintf.la /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libasprintf.so /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libasprintf.so.0 /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libasprintf.so.0.0.0 /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextlib-0.20.1.so /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextlib.la /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextlib.so /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextpo.a /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextpo.la /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextpo.so /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextpo.so.0 /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextpo.so.0.5.5 /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextsrc-0.20.1.so /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextsrc.la /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libgettextsrc.so /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libtextstyle.a /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libtextstyle.la /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libtextstyle.so /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libtextstyle.so.0 /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/libtextstyle.so.0.0.0 /usr/local/lib/
ln -s /usr/local/gettext/0_20_1/lib/preloadable_libintl.so /usr/local/lib/

### /usr/local/share/aclocal
ln -s /usr/local/gettext/0_20_1/share/aclocal/gettext.m4 /usr/local/share/aclocal/
ln -s /usr/local/gettext/0_20_1/share/aclocal/host-cpu-c-abi.m4 /usr/local/share/aclocal/
ln -s /usr/local/gettext/0_20_1/share/aclocal/iconv.m4 /usr/local/share/aclocal/
ln -s /usr/local/gettext/0_20_1/share/aclocal/intlmacosx.m4 /usr/local/share/aclocal/
ln -s /usr/local/gettext/0_20_1/share/aclocal/lib-ld.m4 /usr/local/share/aclocal/
ln -s /usr/local/gettext/0_20_1/share/aclocal/lib-link.m4 /usr/local/share/aclocal/
ln -s /usr/local/gettext/0_20_1/share/aclocal/lib-prefix.m4 /usr/local/share/aclocal/
ln -s /usr/local/gettext/0_20_1/share/aclocal/nls.m4 /usr/local/share/aclocal/
ln -s /usr/local/gettext/0_20_1/share/aclocal/po.m4 /usr/local/share/aclocal/
ln -s /usr/local/gettext/0_20_1/share/aclocal/progtest.m4 /usr/local/share/aclocal/

script.sh

#!/bin/bash

curl -O https://ftp.gnu.org/gnu/gettext/gettext-0.20.1.tar.gz
tar xvfz gettext-0.20.1.tar.gz
cd gettext-0.20.1
./configure --prefix=/usr/local/gettext/0_20_1 \
  --disable-dependency-tracking \
  --disable-silent-rules \
  --disable-debug \
  --disable-java \
  --disable-csharp \
  --without-git \
  --without-cvs \
  --without-xz \
  --with-included-gettext
make
make install
./gettext-symlinks.sh

export LD_LIBRARY_PATH=/usr/local/lib:$LD_LIBRARY_PATH
export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH
export ACLOCAL_PATH=/usr/local/share/aclocal/:$ACLOCAL_PATH