amissl: add missing signal.h include

In some environments, signal.h is already included, but not in others
which cause compilation to fail, so explictly include it.

Closes #11478

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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amigaos: add missing curl header [ci skip]

Without it, `CURLcode` and `CURLE_*` are undefined. `lib/hostip.h` and
conditional local code need them.

Reviewed-by: Daniel Stenberg

amigaos: add missing curl header [ci skip]

Without it, `CURLcode` and `CURLE_*` are undefined. `lib/hostip.h` and
conditional local code need them.

Reviewed-by: Daniel Stenberg

Closes #9761

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amigaos: fix threaded resolver on AmigaOS 4.x

Replace ip4 resolution function on AmigaOS 4.x, as it requires runtime
feature detection and extra code to make it thread safe.

Clo

amigaos: fix threaded resolver on AmigaOS 4.x

Replace ip4 resolution function on AmigaOS 4.x, as it requires runtime
feature detection and extra code to make it thread safe.

Closes #9265

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amissl: allow AmiSSL to be used with AmigaOS 4.x builds

Enable AmiSSL to be used instead of static OpenSSL link libraries.
for AmigaOS 4.x, as it already is in the AmigaOS 3.x build.

amissl: allow AmiSSL to be used with AmigaOS 4.x builds

Enable AmiSSL to be used instead of static OpenSSL link libraries.
for AmigaOS 4.x, as it already is in the AmigaOS 3.x build.

Closes #9269

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amissl: make AmiSSL v5 a minimum requirement

AmiSSL v5 is the latest version, featuring a port of OpenSSL 3.0.
Support for previous OpenSSL 1.1.x versions has been dropped, so
makes

amissl: make AmiSSL v5 a minimum requirement

AmiSSL v5 is the latest version, featuring a port of OpenSSL 3.0.
Support for previous OpenSSL 1.1.x versions has been dropped, so
makes sense to enforce v5 as the minimum requirement. This also
allows all the AmiSSL stub workarounds to be removed as they are
now provided in a link library in the AmiSSL SDK.

Closes #9267

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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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copyright: update copyright year ranges to 2021

AmigaOS: add functions definitions for SHA256

AmiSSL replaces many functions with macros. Curl requires pointer
to some of these functions. Thus, we have to encapsulate these macros:

AmigaOS: add functions definitions for SHA256

AmiSSL replaces many functions with macros. Curl requires pointer
to some of these functions. Thus, we have to encapsulate these macros:
SHA256_Init, SHA256_Update, SHA256_Final, X509_INFO_free.

Bug: https://github.com/jens-maus/amissl/issues/15
Co-authored-by: Daniel Stenberg <daniel@haxx.se>

Closes #7099

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copyright: fix year ranges

Follow-up from 4d2f8006777

curl.se: new home

Closes #6172

configure: add --with-amissl

AmiSSL is an Amiga native library which provides a wrapper over OpenSSL.
It also requires all programs using it to use bsdsocket.library
directly, rather

configure: add --with-amissl

AmiSSL is an Amiga native library which provides a wrapper over OpenSSL.
It also requires all programs using it to use bsdsocket.library
directly, rather than accessing socket functions through clib, which
libcurl was not necessarily doing previously. Configure will now check
for the headers and ensure they are included if found.

Closes #3677

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s/cURL/curl

The tool was never called cURL, only the project. But even so, we have
more and more over time switched to just use lower case.

code: style updates

URLs: change all http:// URLs to https://

checksrc: use space after comma

build: fix circular header inclusion with other packages

This commit renames lib/setup.h to lib/curl_setup.h and
renames lib/setup_once.h to lib/curl_setup_once.h.

Removes the n

build: fix circular header inclusion with other packages

This commit renames lib/setup.h to lib/curl_setup.h and
renames lib/setup_once.h to lib/curl_setup_once.h.

Removes the need and usage of a header inclusion guard foreign
to libcurl. [1]

Removes the need and presence of an alarming notice we carried
in old setup_once.h [2]

----------------------------------------

1 - lib/setup_once.h used __SETUP_ONCE_H macro as header inclusion guard
up to commit ec691ca3 which changed this to HEADER_CURL_SETUP_ONCE_H,
this single inclusion guard is enough to ensure that inclusion of
lib/setup_once.h done from lib/setup.h is only done once.

Additionally lib/setup.h has always used __SETUP_ONCE_H macro to
protect inclusion of setup_once.h even after commit ec691ca3, this
was to avoid a circular header inclusion triggered when building a
c-ares enabled version with c-ares sources available which also has
a setup_once.h header. Commit ec691ca3 exposes the real nature of
__SETUP_ONCE_H usage in lib/setup.h, it is a header inclusion guard
foreign to libcurl belonging to c-ares's setup_once.h

The renaming this commit does, fixes the circular header inclusion,
and as such removes the need and usage of a header inclusion guard
foreign to libcurl. Macro __SETUP_ONCE_H no longer used in libcurl.

2 - Due to the circular interdependency of old lib/setup_once.h and the
c-ares setup_once.h header, old file lib/setup_once.h has carried
back from 2006 up to now days an alarming and prominent notice about
the need of keeping libcurl's and c-ares's setup_once.h in sync.

Given that this commit fixes the circular interdependency, the need
and presence of mentioned notice is removed.

All mentioned interdependencies come back from now old days when
the c-ares project lived inside a curl subdirectory. This commit
removes last traces of such fact.

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Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

f871de0... build: make use

Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

f871de0... build: make use of 76 lib/*.h renamed files
ffd8e12... build: rename 76 lib/*.h files

This also reverts removal of redundant include guard (redundant thanks
to changes in above commits) done 2-12-2013, reverting 1 commit:

c087374... curl_setup.h: remove redundant include guard

This also reverts renaming and usage of lib/*.c source files done
3-12-2013, reverting 3 commits:

13606bb... build: make use of 93 lib/*.c renamed files
5b6e792... build: rename 93 lib/*.c files
7d83dff... build: commit 13606bbfde follow-up 1

Start of related discussion thread:

http://curl.haxx.se/mail/lib-2013-01/0012.html

Asking for confirmation on pushing this revertion commit:

http://curl.haxx.se/mail/lib-2013-01/0048.html

Confirmation summary:

http://curl.haxx.se/mail/lib-2013-01/0079.html

NOTICE: The list of 2 files that have been modified by other
intermixed commits, while renamed, and also by at least one
of the 6 commits this one reverts follows below. These 2 files
will exhibit a hole in history unless git's '--follow' option
is used when viewing logs.

lib/curl_imap.h
lib/curl_smtp.h

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build: make use of 76 lib/*.h renamed files

76 private header files renamed to use our standard naming scheme.

This change affects 322 files in libcurl's source tree.

curl tool: use configuration files from lib directory

Configuration files such as curl_config.h and all config-*.h no longer exist
nor are generated/copied into 'src' directory, now thes

curl tool: use configuration files from lib directory

Configuration files such as curl_config.h and all config-*.h no longer exist
nor are generated/copied into 'src' directory, now these only exist in 'lib'
directory from where curl tool sources uses them.

Additionally old src/setup.h has been refactored into src/tool_setup.h which
now pulls lib/setup.h

The possibility of a makefile needing an include path adjustment exists.

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remove the CVSish $Id$ lines

Fix Pelles C Win32 target compilation issues

Indentation fixes, untabify and related whitespace-cleanup. No code changed.

proper symbol definition check for all AmigaOS flavours

protect from themselves those who need it