SPDX is an international standard for documenting software license
requirements. Remove the existing headers and replace with a brief
SPDX preamble.
See: https://spdx.dev/use/specifications/
The script used to convert the files is added to "tools", and the
file header templates in headers/ are updated.
Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com>
AFM metrics always have 1000 font units to a scaled PostScript point,
but TTF/OTF doesn't have to. The easiest way (and the one which
best avoids unnecessary rounding) is to store the scale in the
metrics, and change pswidth.ph to return the width in PostScript
points instead of font units.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Use the Adobe Source Sans/Code Pro fonts by default. They are Open
Source fonts by Adobe. However, since these fonts are quite large,
let them be an external dependency and do our best to try to find them
with whatever mechanism is available on the system for finding
standard fonts.
Also have a list of substitution fonts if necessary.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
