system.h: sync mingw `CURL_TYPEOF_CURL_SOCKLEN_T` with other compilers

Align mingw with the other Windows compilers and use the `int` type for
`CURL_TYPEOF_CURL_SOCKLEN_T` (and thus for

system.h: sync mingw `CURL_TYPEOF_CURL_SOCKLEN_T` with other compilers

Align mingw with the other Windows compilers and use the `int` type for
`CURL_TYPEOF_CURL_SOCKLEN_T` (and thus for `curl_socklent_t`). This
makes it unnecessary to make a mingw-specific trick and pull all Windows
headers early just for this type definition. This type is specific to
Windows, not to the compiler. mingw-w64's Windows header maps it to
`int` too.

With this we also delete all remaining uses of `CURL_PULL_WS2TCPIP_H`.

[ The official solution is to use `socklen_t` for all Windows compilers.
In this case we may want to update `curl/curl.h` to pull in Windows
headers before `system.h`. ]

Reviewed-by: Daniel Stenberg
Reviewed-by: Jay Satiro
Closes #12501

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curl.h: delete Symbian OS references

curl deprecated Symbian OS in 3d64031fa7a80ac4ae3fd09a5939196268b92f81
via #5989. Delete references to it from public headers, because there
is n

curl.h: delete Symbian OS references

curl deprecated Symbian OS in 3d64031fa7a80ac4ae3fd09a5939196268b92f81
via #5989. Delete references to it from public headers, because there
is no fresh release to use those headers with.

Reviewed-by: Dan Fandrich
Reviewed-by: Jay Satiro
Closes #12378

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autotools: stop setting `-std=gnu89` with `--enable-warnings`

Do not alter the C standard when building with `--enable-warnings` when
building with gcc.

On one hand this alters

autotools: stop setting `-std=gnu89` with `--enable-warnings`

Do not alter the C standard when building with `--enable-warnings` when
building with gcc.

On one hand this alters warning results compared to a default build.
On the other, it may produce different binaries, which is unexpected.

Also fix new warnings that appeared after removing `-std=gnu89`:

- include: fix public curl headers to use the correct printf mask for
`CURL_FORMAT_CURL_OFF_T` and `CURL_FORMAT_CURL_OFF_TU` with mingw-w64
and Visual Studio 2013 and newer. This fixes the printf mask warnings
in examples and tests. E.g. [1]

- conncache: fix printf format string [2].

- http2: fix potential null pointer dereference [3].
(seen on Slackware with gcc 11.)

- libssh: fix printf format string in SFTP code [4].
Also make MSVC builds compatible with old CRT versions.

- libssh2: fix printf format string in SFTP code for MSVC.
Applying the same fix as for libssh above.

- unit1395: fix `argument is null` and related issues [5]:
- stop calling `strcmp()` with NULL to avoid undefined behaviour.
- fix checking results if some of them were NULL.
- do not pass NULL to printf `%s`.

- ci: keep a build job with `-std=gnu89` to continue testing for
C89-compliance. We can apply this to other gcc jobs as needed.
Ref: b23ce2cee7329bbf425f18b49973b7a5f23dfcb4 (2022-09-23) #9542

[1] https://dev.azure.com/daniel0244/curl/_build/results?buildId=18581&view=logs&jobId=ccf9cc6d-2ef1-5cf2-2c09-30f0c14f923b
[2] https://github.com/curl/curl/actions/runs/6896854263/job/18763831142?pr=12346#step:6:67
[3] https://github.com/curl/curl/actions/runs/6896854253/job/18763839238?pr=12346#step:30:214
[4] https://github.com/curl/curl/actions/runs/6896854253/job/18763838007?pr=12346#step:29:895
[5] https://github.com/curl/curl/actions/runs/6896854253/job/18763836775?pr=12346#step:33:1689

Closes #12346

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system.h: add CURL_OFF_T definitions on HP-UX with HP aCC

HP-UX on IA64 provides two modes: 32 and 64 bit while 32 bit being the
default one. Use "long long" in 32 bit mode and just "lon

system.h: add CURL_OFF_T definitions on HP-UX with HP aCC

HP-UX on IA64 provides two modes: 32 and 64 bit while 32 bit being the
default one. Use "long long" in 32 bit mode and just "long" in 64 bit
mode.

Closes #11718

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system.h: remove __IBMC__/__IBMCPP__ guards and apply to all z/OS compiles

Closes #11241

system.h: assume OS400 is always built with ILEC compiler

Prior to this change the OS400 types were only defined when __ILEC400__.
That symbol is only defined by IBM's C compiler and not

system.h: assume OS400 is always built with ILEC compiler

Prior to this change the OS400 types were only defined when __ILEC400__.
That symbol is only defined by IBM's C compiler and not their C++
compiler, which led to missing types when users on OS400 would compile a
C++ application that included curl.

The IBM C and C++ compilers are the only native compilers on the
platform.

Assisted-by: Jon Rumsey
Reported-by: John Sherrill

Fixes https://github.com/curl/curl/issues/10305
Closes https://github.com/curl/curl/pull/10329

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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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system.h: fix socklen_t, curl_off_t, long long for Classic Mac OS

Change "__MWERKS__" to "macintosh". When this block was originally added
in 3ac6929 it was probably intended to handle c

system.h: fix socklen_t, curl_off_t, long long for Classic Mac OS

Change "__MWERKS__" to "macintosh". When this block was originally added
in 3ac6929 it was probably intended to handle classic Mac OS since the
previous classic Mac OS build procedure for curl (which was removed in
bf327a9) used Metrowerks CodeWarrior.

But there are other classic Mac OS compilers, such as the MPW compilers,
that were not handled by this case. For classic Mac OS,
CURL_TYPEOF_CURL_SOCKLEN_T needs to match what's provided by the
third-party GUSI library, which does not vary by compiler.

Meanwhile CodeWarrior works on platforms other than classic Mac OS, and
they may need different definitions. Separate blocks could be added
later for any of those platforms that curl doesn't already support.

Closes #10049

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system.h: support 64-bit curl_off_t for NonStop 32-bit

- Correctly define curl_off_t on NonStop (ie __TANDEM) ia64 and x86 for
32-bit builds.

Signed-off-by: Randall S. Becker

system.h: support 64-bit curl_off_t for NonStop 32-bit

- Correctly define curl_off_t on NonStop (ie __TANDEM) ia64 and x86 for
32-bit builds.

Signed-off-by: Randall S. Becker <randall.becker@nexbridge.ca>

Closes https://github.com/curl/curl/pull/9817

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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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curl/system.h: update ifdef condition for MCST-LCC compiler

in mcst-lcc compiler => 1.25 added a new macro definition to determine
compiler

Closes #8546

misc: remove the final watcom references

Follow-up to bbf8cae44dedc495e6

We removed support for the watcom builds files back in September
2020. This removes all remaining watcom

misc: remove the final watcom references

Follow-up to bbf8cae44dedc495e6

We removed support for the watcom builds files back in September
2020. This removes all remaining watcom references and ifdefs.

Closes #8287

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copyright: fix year ranges

Follow-up from 4d2f8006777

curl.se: new home

Closes #6172

system.h: fix for MCST lcc compiler

Fixed build by MCST lcc compiler on MCST Elbrus 2000 architecture and do
some code cleanup.

e2k (Elbrus 2000) - this is VLIW/EPIC architectur

system.h: fix for MCST lcc compiler

Fixed build by MCST lcc compiler on MCST Elbrus 2000 architecture and do
some code cleanup.

e2k (Elbrus 2000) - this is VLIW/EPIC architecture, like Intel Itanium
architecture.

Ref: https://en.wikipedia.org/wiki/Elbrus_2000

Closes https://github.com/curl/curl/pull/4576

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defines: avoid underscore-prefixed defines

Double-underscored or underscore plus uppercase letter at least.

... as they're claimed to be reserved.

Reported-by: patnyb on gi

defines: avoid underscore-prefixed defines

Double-underscored or underscore plus uppercase letter at least.

... as they're claimed to be reserved.

Reported-by: patnyb on github

Fixes #4254
Closes #4255

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system.h: use proper setting with Sun C++ as well

system.h selects the proper Sun settings when __SUNPRO_C is defined. The
Sun compiler does not define it when compiling C++ files. I'm

system.h: use proper setting with Sun C++ as well

system.h selects the proper Sun settings when __SUNPRO_C is defined. The
Sun compiler does not define it when compiling C++ files. I'm adding a
check also on __SUNPRO_CC to allow curl to work properly also when used
in a C++ project on Sun Solaris.

Closes #3181

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system.h: fix for gcc on 32 bit OpenServer

Bug: https://curl.haxx.se/mail/lib-2018-06/0100.html

system.h: add support for IBM xlc C compiler

Added a section to system.h guarded with __xlc__ for the IBM xml C
compiler. Before this change the section titled 'generic "safe guess" on

system.h: add support for IBM xlc C compiler

Added a section to system.h guarded with __xlc__ for the IBM xml C
compiler. Before this change the section titled 'generic "safe guess" on
old 32 bit style' was used, which resulted in a wrong definition of
CURL_TYPEOF_CURL_SOCKLEN_T, and for 64-bit also CURL_TYPEOF_CURL_OFF_T
was wrong.

Compilation warnings fixed with this change:

CC libcurl_la-ftp.lo
"ftp.c", line 290.55: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"ftp.c", line 293.48: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"ftp.c", line 1070.49: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"ftp.c", line 1154.53: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"ftp.c", line 1187.51: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
CC libcurl_la-connect.lo
"connect.c", line 448.56: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"connect.c", line 516.66: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"connect.c", line 687.55: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
"connect.c", line 696.55: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.
CC libcurl_la-tftp.lo
"tftp.c", line 1115.33: 1506-280 (W) Function argument assignment between types "unsigned long* restrict" and "int*" is not allowed.

Closes #2637

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system.h: Add sparcv8plus to oracle/sunpro 32-bit detection

With specific compiler options selecting the arch like -xarch=sparc on
newer compilers like Oracle Studio 12.4 there is no def

system.h: Add sparcv8plus to oracle/sunpro 32-bit detection

With specific compiler options selecting the arch like -xarch=sparc on
newer compilers like Oracle Studio 12.4 there is no definition of
__sparcv8 but __sparcv8plus which means the V9 ISA, but limited to the
32ÎíÎñbit subset defined by the V8plus ISA specification, without the
Visual Instruction Set (VIS), and without other implementation-specific
ISA extensions. So it should be the same as __sparcv8.

Closes https://github.com/curl/curl/pull/2491

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system.h: Additionally check __LONG_MAX__ for defining curl_off_t

__SIZEOF_LONG__ was introduced in GCC 4.4, __LONG_MAX__ was introduced
in GCC 3.3.

Closes #2216

Revert "curl/system.h: fix compilation with gcc on AIX PPC and IA64 HP-UX"

This reverts commit c97648b55080343bb371522bf4233e94a2a13a99.

SIZEOF_LONG should not be checked in system.

Revert "curl/system.h: fix compilation with gcc on AIX PPC and IA64 HP-UX"

This reverts commit c97648b55080343bb371522bf4233e94a2a13a99.

SIZEOF_LONG should not be checked in system.h since that macro is only
defined when building libcurl.

Ref: https://github.com/curl/curl/pull/2186#issuecomment-354767080
Ref: https://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html

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curl/system.h: fix compilation with gcc on AIX PPC and IA64 HP-UX

Closes https://github.com/curl/curl/pull/2186

system.h: include sys/poll.h for AIX

... to get the event/revent defines that might be used for the poll
struct.

Reported-by: Michael Smith
Fixes #1828
Closes #1833

curl/system.h: fix build for hppa

Reported-by: John David Anglin
Bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=872502#10