tce-load -i compiletc fontconfig-dev libxcb-dev perl5 xtrans gettext

https://www.x.org/pub/individual/lib/

cd libX11-1.8
cd ../libXt-1.2.1 [libICE-dev libSM-dev]
cd ../libXpm-3.5.13
cd ../libXaw-1.0.14 [libXext-dev libXmu-dev]
cd ../libXfixes-6.0.0
cd ../libXcursor-1.2.1 [libXrender-dev]
cd ../libXfont2-2.0.5 [libfontenc-dev]
cd ../libXft-2.3.4
cd ../libXi-1.8
cd ../libXres-1.2.1
cd ../libXvmc-1.0.13 [libXv-dev]

[patch -Rp1 -i ../libXfont2-2.0.4.patch]

CC="gcc -flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe" CXX="g++ -flto -march=armv8-a+crc -mtune=cortex-a72 -Os -pipe -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local --disable-static --localstatedir=/var --sysconfdir=/etc [libICE LIBS="-pthread"] [libXt --with-appdefaultdir=/etc/X11/app-defaults] [libXfont2 --disable-devel-docs]

find . -name Makefile -type f -exec sed -i 's/-g -O2//g' {} \;

make [4m 11.23s]
make install

X11 will be built with the following settings:
 Loadable i18n module support:            no
 Loadable xcursor library support:        yes
 Threading support:                       yes
 Use Threads safe API:                    yes
 Threads stubs in libX11:                 no
 XCMS:                                    yes
 Internationalization support:            yes
 XF86BigFont support:                     yes
 XKB support:                             yes
 XLOCALEDIR environment variable support: yes
 Compose table cache enabled:             yes
 Functional specs building enabled:       yes

libX11, libXt

checking for cpp... /usr/local/bin/cpp
checking if /usr/local/bin/cpp requires -undef... cpp: fatal error: no input files
compilation terminated.

configure:19599: checking if /usr/local/bin/cpp requires -undef
configure:19619: error: /usr/local/bin/cpp defines unix with or without -undef.  I don't know what to do.

make[1]: Entering directory '/usr/src/libX11-1.8/nls'
/usr/local/bin/cpp  -DWCHAR32=1 < am_ET.UTF-8/XLC_LOCALE.pre | LC_CTYPE=C /usr/local/bin/sed -e '/^#  *[0-9][0-9]*  *.*$/d' -e '/^#line  *[0-9][0-9]*  *.*$/d' -e '/^[	 ]*XCOMM$/s/XCOMM/#/' -e '/^[	 ]*XCOMM[^a-zA-Z0-9_]/s/XCOMM/#/' -e '/^[	 ]*XHASH/s/XHASH/#/' -e 's,X11_LOCALEDATADIR,/usr/local/share/X11/locale,g' -e '/\@\@$/s/\@\@$/\\/' -e '/^$/d' > am_ET.UTF-8/XLC_LOCALE
cpp: fatal error: no input files
compilation terminated.