cmake: allow building tests in unity mode

Makes building tests noticeably faster.

Apply changes/fixes/workarounds to make Unity work:
- rename test variables to avoid collisions

cmake: allow building tests in unity mode

Makes building tests noticeably faster.

Apply changes/fixes/workarounds to make Unity work:
- rename test variables to avoid collisions or shadowing each other when
combined into single units.
- add workaround to avoid applying `lib/memdebug.h` overrides to system
headers declaring/defining `getaddrinfo()`/`freeaddrinfo()` for
`tests/server/resolve.c`. This replaces a previous workaround that
worked for that specific source.
- rename test macro `CTRL` clashing with Cygwin `sys/ioctl.h`.
- add include guard to `test.h`.

Also:
- exclude `tests/http/clients` which are all single-source. (like
`docs/examples`.)

Build time improvements for tests:
- AppVeyor CI:
- MSVC 2008, 2010: 1 minute faster (4m8s -> 2m56s, 3m19s -> 2m24s)
- MSVC 2022 arm64: 3.5 minutes faster (10m18s -> 6m48s)
before: https://ci.appveyor.com/project/curlorg/curl/builds/50522785
after: https://ci.appveyor.com/project/curlorg/curl/builds/50522942
- GHA:
- Cygwin: 1.5 minutes faster (3m13s -> 1m43s)
before: https://github.com/curl/curl/actions/runs/10681535327/job/29605384398
after: https://github.com/curl/curl/actions/runs/10680818726/job/29603130637
- Windows:
before: https://github.com/curl/curl/actions/runs/10680818713
after: https://github.com/curl/curl/actions/runs/10683850187
- MSYS2, mingw-w64: 1 minute faster
- MSVC: 30 seconds faster (3m17s -> 2m48s)
- macOS: double speed (39s -> 18s)
before: https://github.com/curl/curl/actions/runs/10680818753/job/29603133447
after: https://github.com/curl/curl/actions/runs/10683850174/job/29612914515
- Linux: almost double speed (30/31s -> 18s)
before: https://github.com/curl/curl/actions/runs/10681535311/job/29605387156
after: https://github.com/curl/curl/actions/runs/10680818721/job/29603133976
- non-native: no obvious effect.
before: https://github.com/curl/curl/actions/runs/10680818722
after: https://github.com/curl/curl/actions/runs/10683850187
- Old Linux: Unity mode not supported by old CMake, no effect.

Closes #14765

show more ...

lib/src: white space edits to comply better with code style

... as checksrc now finds and complains about these.

Closes #14921

src: fix potential macro confusion in cmake unity builds

Sources used `lib/curlx.h` with both `ENABLE_CURLX_PRINTF` set and unset
before including it.

In a cmake "unity" batch w

src: fix potential macro confusion in cmake unity builds

Sources used `lib/curlx.h` with both `ENABLE_CURLX_PRINTF` set and unset
before including it.

In a cmake "unity" batch where the first included source had it unset,
the next sources did not get the macros requested with
`ENABLE_CURLX_PRINTF` because `lib/curl.x` had already been included
without them.

Fix it by by making the macros enabled permanently and globally for
internal sources, and dropping `ENABLE_CURLX_PRINTF`.

This came up while testing unity builds with smaller batches. The full,
default unity build where all `src` is bundled up in a single unit, was
not affected.

Fixes:
```
$ cmake -B build -DCMAKE_UNITY_BUILD=ON -DCMAKE_UNITY_BUILD_BATCH_SIZE=15
$ make -C build
...
curl/src/tool_getparam.c: In function ‘getparameter’:
curl/src/tool_getparam.c:2409:11: error: implicit declaration of function ‘msnprintf’; did you mean ‘vsnprintf’? [-Wimplicit-function-declaration]
2409 | msnprintf(buffer, sizeof(buffer), "%" CURL_FORMAT_CURL_OFF_T "-",
| ^~~~~~~~~
| vsnprintf
curl/src/tool_getparam.c:2409:11: warning: nested extern declaration of ‘msnprintf’ [-Wnested-externs]
[...]
```

Reported-by: Daniel Stenberg
Bug: https://github.com/curl/curl/pull/14626#issuecomment-2301663491

Closes #14632

show more ...

tidy-up: OS names

Use these words and casing more consistently across text, comments and
one curl tool output:
AIX, ALPN, ANSI, BSD, Cygwin, Darwin, FreeBSD, GitHub, HP-UX, Linux,

tidy-up: OS names

Use these words and casing more consistently across text, comments and
one curl tool output:
AIX, ALPN, ANSI, BSD, Cygwin, Darwin, FreeBSD, GitHub, HP-UX, Linux,
macOS, MS-DOS, MSYS, MinGW, NTLM, POSIX, Solaris, UNIX, Unix, Unicode,
WINE, WebDAV, Win32, winbind, WinIDN, Windows, Windows CE, Winsock.

Mostly OS names and a few more.

Also a couple of other minor text fixups.

Closes #14360

show more ...

windows: use built-in `_WIN32` macro to detect Windows

Windows compilers define `_WIN32` automatically. Windows SDK headers
or build env defines `WIN32`, or we have to take care of it. T

windows: use built-in `_WIN32` macro to detect Windows

Windows compilers define `_WIN32` automatically. Windows SDK headers
or build env defines `WIN32`, or we have to take care of it. The
agreement seems to be that `_WIN32` is the preferred practice here.
Make the source code rely on that to detect we're building for Windows.

Public `curl.h` was using `WIN32`, `__WIN32__` and `CURL_WIN32` for
Windows detection, next to the official `_WIN32`. After this patch it
only uses `_WIN32` for this. Also, make it stop defining `CURL_WIN32`.

There is a slight chance these break compatibility with Windows
compilers that fail to define `_WIN32`. I'm not aware of any obsolete
or modern compiler affected, but in case there is one, one possible
solution is to define this macro manually.

grepping for `WIN32` remains useful to discover Windows-specific code.

Also:

- extend `checksrc` to ensure we're not using `WIN32` anymore.

- apply minor formatting here and there.

- delete unnecessary checks for `!MSDOS` when `_WIN32` is present.

Co-authored-by: Jay Satiro
Reviewed-by: Daniel Stenberg

Closes #12376

show more ...

build: delete checks for C89 standard headers

Delete checks and guards for standard C89 headers and assume these are
available: `stdio.h`, `string.h`, `time.h`, `setjmp.h`, `stdlib.h`,

build: delete checks for C89 standard headers

Delete checks and guards for standard C89 headers and assume these are
available: `stdio.h`, `string.h`, `time.h`, `setjmp.h`, `stdlib.h`,
`stddef.h`, `signal.h`.

Some of these we already used unconditionally, some others we only used
for feature checks.

Follow-up to 9c7165e96a3a9a2d0b7059c87c699b5ca8cdae93 #11918 (for `stdio.h` in CMake)

Closes #11940

show more ...

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

show more ...

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

show more ...

curl.se: new home

Closes #6172

server/resolve: remove AI_CANONNAME to make macos tell the truth

With this bit set, my mac successfully resolves "ip6-localhost" when in
fact there is no such host known to my machine! T

server/resolve: remove AI_CANONNAME to make macos tell the truth

With this bit set, my mac successfully resolves "ip6-localhost" when in
fact there is no such host known to my machine! That in turn made test
241 wrongly execute and fail.

Closes #5202

show more ...

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

show more ...

curl_setup: disable IPv6 resolver without `getaddrinfo`

Also, use `CURLRES_IPV6` only for actual DNS resolution, not for IPv6
address support. This makes it possible to connect to IPv6 l

curl_setup: disable IPv6 resolver without `getaddrinfo`

Also, use `CURLRES_IPV6` only for actual DNS resolution, not for IPv6
address support. This makes it possible to connect to IPv6 literals by
setting `ENABLE_IPV6` even without `getaddrinfo` support. It also fixes
the CMake build when using the synchronous resolver without
`getaddrinfo` support.

Closes https://github.com/curl/curl/pull/4662

show more ...

code style: use spaces around equals signs

tests/server/resolve.c: fix deprecation warning

MSVC warns that gethostbyname is deprecated. Always use getaddrinfo
instead to fix this when IPv6 is enabled, also for IPv4 resolves. This

tests/server/resolve.c: fix deprecation warning

MSVC warns that gethostbyname is deprecated. Always use getaddrinfo
instead to fix this when IPv6 is enabled, also for IPv4 resolves. This
is also consistent with what libcurl does.

Closes https://github.com/curl/curl/pull/1682

show more ...

tests/server: comply with our code style

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

code/docs: Use correct case for IPv4 and IPv6

For consistency, as we seem to have a bit of a mixed bag, changed all
instances of ipv4 and ipv6 in comments and documentations to use the

code/docs: Use correct case for IPv4 and IPv6

For consistency, as we seem to have a bit of a mixed bag, changed all
instances of ipv4 and ipv6 in comments and documentations to use the
correct case.

show more ...

tests: fix memleak in server/resolve.c

This makes LeakSanitizer happy.

Signed-off-by: Peter Wu <peter@lekensteyn.nl>

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

show more ...

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.

setup_once.h: refactor inclusion of <unistd.h> and <sys/socket.h>

Inclusion of top two most included header files now done in setup_once.h

test servers: build adjustment

Undefine CURL_HIDDEN_SYMBOLS libcurl private preprocessor macro that might
leak from lib/setup.h into source files where this should not be defined.

remove the CVSish $Id$ lines

fix socket data type

avoid possibility of using obsoleted stuff