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Hopefully right this time.

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Federico Mena Quintero authored Jan 06, 2022 and Marge Bot committed Jan 07, 2022

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Federico Mena Quintero authored Jan 06, 2022 and Marge Bot committed Jan 07, 2022

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Federico Mena Quintero authored Jan 06, 2022 and Marge Bot committed Jan 07, 2022

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Markus Mützel authored Dec 04, 2021 and Marge Bot committed Dec 06, 2021

Add flags for linking to necessary libraries on Windows automatically.

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AC_HELP_STRING is obsolete.

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AC_TRY_LINK is obsolete.

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Replace with an equivalent check.

ISC UNIX is dead since mid 2006.

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Substitution can be used to set a default value for empty/unset variables.

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Ismael Luceno authored Aug 28, 2021 and Marge Bot committed Sep 11, 2021

Also simplify GIO backend check.

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Required rustc version is already >= 1.44.

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The requirement is for rustc >= 1.52, yet the test would fail for any x.y
with y < 52.

Use AX_COMPARE_VERSION instead (from autoconf-archive).

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Three things make me want to make Rust 1.52 the MSRV for librsvg:

    CVE-2021-28878 in the Zip iterator in the standard library -
    https://rustsec.org/advisories/CVE-2021-28878.html

    Miscompilations with incremental compilation before 1.52.1 - only
    of concern to everyday developers, not to full release
    builds.
    https://github.com/rust-lang/rust/blob/master/RELEASES.md#version-1521-2021-05-10

    Firefox 90, due on June 29, should require Rust 1.53 anyway - this
    is a few days before the GNOME 41 alpha, due on July 10.
    https://firefox-source-docs.mozilla.org/writing-rust-code/update-policy.html

Fixes #744

Unfortunately the fix for #730 requires a call to
pango_context_set_round_glyph_positions(), which only appeared in
Pango 1.44.

Version 0.26 of nalgebra is where they introduced support for const
generics; this appeared in Rust 1.51.

Also, the next version of gtk-rs will require Rust 1.51 as well, and
librsvg will be depending on that soon.

The C code doesn't have these dependencies any longer.

This allows us to simplify some code in rsvg-convert.rs.

May need some more cleanup for Win32, but I'll leave that to someone
who can actually test the changes.

Output a warning at the beginning, and fill PKG_CONFIG with "false" so
that any auto-configuration attempts fail without bogus messages.