docs: ascii version of manpage without nroff

Create ASCII version of manpage without nroff

- build src/tool_hugegelp.c from the ascii manpage
- move the the manpage and the as

docs: ascii version of manpage without nroff

Create ASCII version of manpage without nroff

- build src/tool_hugegelp.c from the ascii manpage
- move the the manpage and the ascii version build to docs/cmdline-opts
- remove all use of nroff from the build process
- should make the build entirely reproducible (by avoiding nroff)

- partly reverts 2620aa9 to build libcurl option man pages one by one
in cmake because the appveyor builds got all crazy until I did

The ASCII version of the manpage

- is built with gen.pl, just like the manpage is
- has a right-justified column making the appearance similar to the previous
version
- uses a 4-space indent per level (instead of the old version's 7)
- does not do hyphenation of words (which nroff does)

History

We first made the curl build use nroff for building the hugehelp file in
December 1998, for curl 5.2.

Closes #13047

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cmake: tidy-up `OtherTests.cmake`

- make more obvious which detection uses which prep steps.
- merge and streamline conditions.
- these should not alter detection results.

A

cmake: tidy-up `OtherTests.cmake`

- make more obvious which detection uses which prep steps.
- merge and streamline conditions.
- these should not alter detection results.

Also align log output messages from
`Macros.cmake` / `curl_internal_test` with rest of the build.

Closes #12551

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cmake: replace `check_library_exists_concat()`

The idea of `check_library_exists_concat()` is that it detects an
optional component and adds it to the list of libs that we also use in

cmake: replace `check_library_exists_concat()`

The idea of `check_library_exists_concat()` is that it detects an
optional component and adds it to the list of libs that we also use in
subsequent component checks. This caused problems when detecting
components with unnecessary dependencies that were not yet built.

CMake offers the `CMAKE_REQUIRED_LIBRARIES` variable to set libs used
for component checks, which we already use in most cases. That left 4
uses of `check_library_exists_concat()`. Only one of these actually
needed the 'concat' feature (ldap/lber).

Delete this function and replace it with standard
`check_library_exists()` and manual management of our `CURL_LIBS`
list we use when linking build targets. And special logic to handle the
ldap/lber case.

(We have a similar function for headers: `check_include_file_concat()`.
It works, but problematic for performance reasons and because it hides
the actual headers required in `check_symbol_exists()` calls.)

Ref: #11537 #11558
Fixes #11285
Fixes #11648
Closes #12070

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copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- save

copyright: update all copyright lines and remove year ranges

- they are mostly pointless in all major jurisdictions
- many big corporations and projects already don't use them
- saves us from pointless churn
- git keeps history for us
- the year range is kept in COPYING

checksrc is updated to allow non-year using copyright statements

Closes #10205

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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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cmake: make CURL_ZLIB a tri-state variable

By differentiating between ON and AUTO it can make a missing zlib
library a hard error when CURL_ZLIB=ON is used.

Reviewed-by: Jakub Z

cmake: make CURL_ZLIB a tri-state variable

By differentiating between ON and AUTO it can make a missing zlib
library a hard error when CURL_ZLIB=ON is used.

Reviewed-by: Jakub Zakrzewski
Closes #6221
Fixes #6173

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curl.se: new home

Closes #6172

copyright: fix out-of-date copyright ranges and missing headers

Reported by the new script 'scripts/copyright.pl'. The script has a
regex whitelist for the files that don't need copyrigh

copyright: fix out-of-date copyright ranges and missing headers

Reported by the new script 'scripts/copyright.pl'. The script has a
regex whitelist for the files that don't need copyright headers.

Removed three (mostly usesless) README files from docs/

Closes #5141

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CMake: Update scripts to use consistent style

Closes #2727
Reviewed-by: Sergei Nikulov

CMake: remove redundant and old end-of-block syntax

Reviewed-by: Jakub Zakrzewski
Closes #2715

cmake: disable tests and man generation if perl/nroff not found

Fixes https://github.com/curl/curl/issues/1500
Reported-by: Jay Satiro

Fixes https://github.com/curl/curl/pull/16

cmake: disable tests and man generation if perl/nroff not found

Fixes https://github.com/curl/curl/issues/1500
Reported-by: Jay Satiro

Fixes https://github.com/curl/curl/pull/1662
Assisted-by: Tom Seddon
Assisted-by: dpull@users.noreply.github.com
Assisted-by: elelel@users.noreply.github.com

Closes https://github.com/curl/curl/pull/1924

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CMake: Simplify if() conditions on check result variables

Remove use of an old hack that takes advantage of the auto-dereference
behavior of the if() command to detect if a variable is d

CMake: Simplify if() conditions on check result variables

Remove use of an old hack that takes advantage of the auto-dereference
behavior of the if() command to detect if a variable is defined. The
hack has the form:

if("${VAR} MATCHES "^${VAR}$")

where "${VAR}" is a macro argument reference. Use if(DEFINED) instead.
This also avoids warnings for CMake Policy CMP0054 in CMake 3.1.

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CMake: Restore order-dependent library checks

Revert commit 2257deb502 (Cmake: Avoid cycle directory dependencies,
2014-08-22) and add a comment explaining the purpose of the original

CMake: Restore order-dependent library checks

Revert commit 2257deb502 (Cmake: Avoid cycle directory dependencies,
2014-08-22) and add a comment explaining the purpose of the original
code.

The check_library_exists_concat macro is intended to be called multiple
times on a sequence of possibly dependent libraries. Later libraries
may depend on earlier libraries when they are static. They cannot be
safely linked in reverse order on some platforms.

Signed-off-by: Brad King <brad.king@kitware.com>

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CMake: Restore order-dependent header checks

Revert commit 1269df2e3b (Cmake: Don't check for all headers each
time, 2014-08-15) and add a comment explaining the purpose of the
origi

CMake: Restore order-dependent header checks

Revert commit 1269df2e3b (Cmake: Don't check for all headers each
time, 2014-08-15) and add a comment explaining the purpose of the
original code.

The check_include_file_concat macro is intended to be called multiple
times on a sequence of possibly dependent headers. Later headers
may depend on earlier headers to provide declarations. They cannot
be safely included independently on some platforms.

For example, many POSIX APIs document including sys/types.h before some
other headers. Also on some OS X versions sys/socket.h must be included
before net/if.h or the check for the latter will fail.

Signed-off-by: Brad King <brad.king@kitware.com>

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Cmake: Avoid cycle directory dependencies.

Because we prepended libraries to list, CMake had troubles resolving
link directory order as it detected some cycles. Appending to list ensures

Cmake: Avoid cycle directory dependencies.

Because we prepended libraries to list, CMake had troubles resolving
link directory order as it detected some cycles. Appending to list ensures
that dependencies will preceed dependees.

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Cmake: Don't check for all headers each time

One header at a time is the right way. Apart from that the output on
windows goes from:
...
-- Looking for include files I:/src/libss

Cmake: Don't check for all headers each time

One header at a time is the right way. Apart from that the output on
windows goes from:
...
-- Looking for include files I:/src/libssh2-1.4.3/include/libssh2.h, ws2tcpip.h
-- Looking for include files I:/src/libssh2-1.4.3/include/libssh2.h, ws2tcpip.h
- found
-- Looking for 3 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wins
ock2.h
-- Looking for 3 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wins
ock2.h - found
-- Looking for 4 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., stdi
o.h
-- Looking for 4 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., stdi
o.h - found
-- Looking for 5 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wind
ows.h
-- Looking for 5 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wind
ows.h - found
-- Looking for 6 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wins
ock.h
-- Looking for 6 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., wins
ock.h - found
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
filio.h
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
filio.h - not found
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
ioctl.h
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
ioctl.h - not found
-- Looking for 7 include files I:/src/libssh2-1.4.3/include/libssh2.h, ..., sys/
resource.h
...

To much nicer:
...
-- Looking for ws2tcpip.h
-- Looking for ws2tcpip.h - found
-- Looking for winsock2.h
-- Looking for winsock2.h - found
-- Looking for stdio.h
-- Looking for stdio.h - found
-- Looking for windows.h
-- Looking for windows.h - found
-- Looking for winsock.h
-- Looking for winsock.h - found
-- Looking for sys/filio.h
-- Looking for sys/filio.h - not found
-- Looking for sys/ioctl.h
-- Looking for sys/ioctl.h - not found
-- Looking for sys/resource.h

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Cmake: Moved macros out of the main CMakeLists.txt