compiled on RPI3B with 5.4.51-piCore-v8 (beta release)

Compile Flags:
CFLAGS="-march=armv8-a+crc -mtune=cortex-a72 -Os -pipe"
LDFLAGS="-Wl,-O1"
export CFLAGS LDFLAGS

Dependencies:
automake
compiletc
docbook-xml
itstool
libtool-dev
libxslt-dev

Commands:

tar xf gtk-doc-1.33.0.tar.xz

cd gtk-doc-1.33.0/

./autogen.sh --prefix=/usr/local

make

Configuration Summary
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gtk-doc was configured with the following options:
==================================================
configure:    PDF support disabled, no dblatex or fop available
configure:    Skipping regression tests
configure:    Debug tracing disabled
configure:    Documentation disabled