tests/libtest/Makefile: Do not unconditionally add gcc-specific flags

The warning flag leads e.g. Sun Studio compiler to bail out.

Closes #2576

build: get CFLAGS (including -werror) used for examples and tests

... so that the CI and more detects compiler warnings/errors properly!

Closes #2337

tests: add initial gssapi test using stub implementation

The stub implementation is pre-loaded using LD_PRELOAD
and emulates common gssapi uses (only builds if curl is
initially buil

tests: add initial gssapi test using stub implementation

The stub implementation is pre-loaded using LD_PRELOAD
and emulates common gssapi uses (only builds if curl is
initially built with gssapi support).

The initial tests are currently disabled for debug builds
as LD_PRELOAD is not used then.

Ref: https://github.com/curl/curl/pull/1687

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libtest/make: generate lib1521.c

... instead of having the generated code checked in. This saves space in
the tarball but primarily automatically adapts to newly added options.

libtest/make: generate lib1521.c

... instead of having the generated code checked in. This saves space in
the tarball but primarily automatically adapts to newly added options.

Closes #1614

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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

spelling fixes

Closes #1356

build: removed redundant DEPENDENCIES from makefiles

make/checksrc: use $srcdir, not $top_srcdir

checksrc/makefile.am: use $top_srcdir to find source files

... to properly support out of source tree builds.

code: style updates

checksrc: run checksrc in tests when 'make checksrc' in root

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

libtest: call PR_Cleanup() on exit if NSPR is used

This prevents valgrind from reporting possibly lost memory that NSPR
uses for file descriptor cache and other globally allocated intern

libtest: call PR_Cleanup() on exit if NSPR is used

This prevents valgrind from reporting possibly lost memory that NSPR
uses for file descriptor cache and other globally allocated internal
data structures.

Reported-by: Štefan Kremeň

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tests: Distribute CMakeLists.txt files in subdirectories

curl.h: stricter CURL_EXTERN linkage decorations logic

No API change involved.

Info: http://curl.haxx.se/mail/lib-2013-02/0234.html

Makefile.am: empty AM_LDFLAGS definition for automake 1.7 compatibility

configure: use XC_LIBTOOL for portability across libtool versions

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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build: explain current role of LIBS in our Makefile.am files

BLANK_AT_MAKETIME may be used in our Makefile.am files to blank
LIBS variable used in generated makefile at makefile processi

build: explain current role of LIBS in our Makefile.am files

BLANK_AT_MAKETIME may be used in our Makefile.am files to blank
LIBS variable used in generated makefile at makefile processing
time. Doing this functionally prevents LIBS from being used for
all link targets in given makefile.

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build: prevent global LIBS from influencing libtest build targets

build: fix Windows build targets damaged since commit 550e403f00

build: avoid linkage of directly unused libraries

uniformly use AM_CPPFLAGS, avoid deprecated INCLUDES

Since automake 1.12.4, the warnings are issued on running automake:

warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or

uniformly use AM_CPPFLAGS, avoid deprecated INCLUDES

Since automake 1.12.4, the warnings are issued on running automake:

warning: 'INCLUDES' is the old name for 'AM_CPPFLAGS' (or '*_CPPFLAGS')

Avoid INCLUDES and roll these flags into AM_CPPFLAGS.

Compile tested on:
Ubuntu 10.04 (automake 1:1.11.1-1)
Ubuntu 12.04 (automake 1:1.11.3-1ubuntu2)
Arch Linux (automake 1.12.4)

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tests 1334 to 1363 revisited.

Add a postcheck section to verify unintended file creation.

Remove needless <file> checks in verify section. Renumbering where appropriate.

build adjustments: commit 9e24b9c7 follow-up