windows: add .rc support to autotools builds

After this update autotools builds will compile and link `.rc` resources
to Windows executables. Bringing this feature on par with CMake and

windows: add .rc support to autotools builds

After this update autotools builds will compile and link `.rc` resources
to Windows executables. Bringing this feature on par with CMake and
Makefile.m32 builds. And also making it unnecessary to improvise these
steps manually, while monkey patching build files, e.g. [0].

You can customize the resource compiler via the `RC` envvar, and its
options via `RCFLAGS`.

This harmless warning may appear throughout the build, even though the
autotools manual documents [1] `RC` as a valid tag, and it fails when
omitting one:
`libtool: error: ignoring unknown tag RC`

[0] https://github.com/curl/curl-for-win/blob/535f19060d4b708f72e75dd849409ce50baa1b84/curl-autotools.sh#L376-L382
[1] https://www.gnu.org/software/libtool/manual/html_node/Tags.html

Closes #9521

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tool_hugehelp: make hugehelp a blank macro when disabled

Closes #9485

copyright: make repository REUSE compliant

Add licensing and copyright information for all files in this repository. This
either happens in the file itself as a comment header or in the

copyright: make repository REUSE compliant

Add licensing and copyright information for all files in this repository. This
either happens in the file itself as a comment header or in the file
`.reuse/dep5`.

This commit also adds a Github workflow to check pull requests and adapts
copyright.pl to the changes.

Closes #8869

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macos9: remove partial support

The support for compiling on Mac OS 9 hasn't been modified since 2001
and has no active maintainer or packager, so it's time to remove it as
it's incre

macos9: remove partial support

The support for compiling on Mac OS 9 hasn't been modified since 2001
and has no active maintainer or packager, so it's time to remove it as
it's incredibly unlikely to work. If a maintainer re-emerges it can be
resurrected from Git history.

Closes: #8836
Reviewed-by: Daniel Stenberg <daniel@haxx.se>

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scripts: move three scripts from lib/ to scripts/

Move checksrc.pl, firefox-db2pem.sh and mk-ca-bundle.pl since they don't
particularly belong in lib/

Also created an EXTRA_DIST

scripts: move three scripts from lib/ to scripts/

Move checksrc.pl, firefox-db2pem.sh and mk-ca-bundle.pl since they don't
particularly belong in lib/

Also created an EXTRA_DIST= in scripts/Makefile.am instead of specifying
those files in the root Makefile.am

Closes #8625

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netware: remove support

There are no current users and no Netware related changes done in the
code for over 13 years is a clear sign this is abandoned.

Closes #8358

tool_listhelp: easier to generate with gen.pl

tool_listhelp.c is now a separate file with only the command line --help
output, exactly as generated by gen.pl. This makes it easier to gen

tool_listhelp: easier to generate with gen.pl

tool_listhelp.c is now a separate file with only the command line --help
output, exactly as generated by gen.pl. This makes it easier to generate
updates according to what's in the docs/cmdline-opts docs.

cd $srcroot/docs/cmdline-opts
./gen.pl listhelp *.d > $srcroot/src/tool_listhelp.c

With a configure build, this also works:

make -C src listhelp

Closes #7787

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metalink: remove

Warning: this will make existing curl command lines that use metalink to
stop working.

Reasons for removal:

1. We've found several security problems an

metalink: remove

Warning: this will make existing curl command lines that use metalink to
stop working.

Reasons for removal:

1. We've found several security problems and issues involving the
metalink support in curl. The issues are not detailed here. When
working on those, it become apparent to the team that several of the
problems are due to the system design, metalink library API and what
the metalink RFC says. They are very hard to fix on the curl side
only.

2. The metalink usage with curl was only very briefly documented and was
not following the "normal" curl usage pattern in several ways, making
it surprising and non-intuitive which could lead to further security
issues.

3. The metalink library was last updated 6 years ago and wasn't so
active the years before that either. An unmaintained library means
there's a security problem waiting to happen. This is probably reason
enough.

4. Metalink requires an XML parsing library, which is complex code (even
the smaller alternatives) and to this day often gets security
updates.

5. Metalink is not a widely used curl feature. In the 2020 curl user
survey, only 1.4% of the responders said that they'd are using it. In
2021 that number was 1.2%. Searching the web also show very few
traces of it being used, even with other tools.

6. The torrent format and associated technology clearly won for
downloading large files from multiple sources in parallel.

Cloes #7176

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curl.se: new home

Closes #6172

build: drop support for building with Watcom

These files are not maintained, they seem to have no users, Watcom
compilers look like not having users nor releases anymore.

Closes

build: drop support for building with Watcom

These files are not maintained, they seem to have no users, Watcom
compilers look like not having users nor releases anymore.

Closes #5918

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src/makefile: fix uncompressed hugehelp.c generation

Regression from 5cf5d57ab9 (7.64.1)

Fixed-by: Lance Ware
Fixes #4176
Closes #4177

makefile: make checksrc and hugefile commands "silent"

... to match the style already used for compiling, linking
etc. Acknowledges 'make V=1' to enable verbose.

Closes #3681

curl: remove MANUAL from -M output

... and remove it from the dist tarball. It has served its time, it
barely gets updated anymore and "everything curl" is now convering all
this doc

curl: remove MANUAL from -M output

... and remove it from the dist tarball. It has served its time, it
barely gets updated anymore and "everything curl" is now convering all
this document once tried to include, and does it more and better.

In the compressed scenario, this removes ~15K data from the binary,
which is 25% of the -M output.

It remains in the git repo for now for as long as the web site builds a
page using that as source. It renders poorly on the site (especially for
mobile users) so its not even good there.

Closes #3587

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configure: rewrite --enable-code-coverage

The previously used ax_code_coverage.m4 is not license compatible and
must not be used.

Reported-by: William A. Rowe Jr
Fixes #3497

configure: rewrite --enable-code-coverage

The previously used ax_code_coverage.m4 is not license compatible and
must not be used.

Reported-by: William A. Rowe Jr
Fixes #3497
Closes #3499

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src/Makefile: make 'tidy' target work for metalink builds

Makefile: add 'tidy' target that runs clang-tidy

Available in the root, src and lib dirs.

Closes #3163

whitespace fixes

- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few inde

whitespace fixes

- replace tabs with spaces where possible
- remove line ending spaces
- remove double/triple newlines at EOF
- fix a non-UTF-8 character
- cleanup a few indentations/line continuations
in manual examples

Closes https://github.com/curl/curl/pull/3037

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build: remove the Borland specific makefiles

According to the user survey 2018, not even one out of 670 users use
them. Nobody on the mailing list spoke up for them either.

Clos

build: remove the Borland specific makefiles

According to the user survey 2018, not even one out of 670 users use
them. Nobody on the mailing list spoke up for them either.

Closes #2629

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make: fix docs build on OpenBSD

Ref: #1591

make: build the docs subdir only from within src

... and don't build at all in include

Prompted-by-work-by: Simon Warta
Ref: #1590
Closes #1591

automake: use $(MKHELP) variable instead if constant mkhelp.pl

this improves symmetry with the rule above

includes: remove curl/curlbuild.h and curl/curlrules.h

Rely entirely on curl/system.h now.

Introduced in Aug 2008 with commit 14240e9e109f. Now gone.

Fixes #1456

build: provide easy code coverage measuring

Closes #1528

Makefile: avoid use of GNU-specific form of $<

$< is only allowed in implicit rules in some non-GNU makes (e.g. BSD,
AIX) so avoid use elsewhere by referencing the dependent curl.1 file

Makefile: avoid use of GNU-specific form of $<

$< is only allowed in implicit rules in some non-GNU makes (e.g. BSD,
AIX) so avoid use elsewhere by referencing the dependent curl.1 file
directly instead. This is somewhat tricky because the file is supplied
in the packaged tar ball (but not in git) but must still be able to be
rebuilt when its dependencies change. The right thing must happen in
both tar ball and git source trees, as well as in both in-tree and
out-of-tree builds.

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Revert "src/Makefile.am: avoid explicit $<"

This reverts commit 5b4cbcf11d5100ff793a8e9edbaa6fe1fc7495f5.

Since it broke out-of-tree builds from tarballs. See discussion in #1432