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lib: feature deprecation warnings in gcc >= 4.3

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Add a deprecated attribute to functions and enum values that should not
be used anymore.
This uses a gcc 4.3 dialect, thus is only available for this version of
gcc and newer. Note that the _Pragma() keyword is introduced by C99, but
is available as part of the gcc dialect even when compiling in C89 mode.

It is still possible to disable deprecation at a calling module compile
time by defining CURL_DISABLE_DEPRECATION.

Gcc type checking macros are made aware of possible deprecations.

Some testing support Perl programs are adapted to the extended
declaration syntax.

Several test and unit test C programs intentionally use deprecated
functions/options and are annotated to not generate a warning.

New test 1222 checks the deprecation status in doc and header files.

Closes #9667
This commit is contained in:
Patrick Monnerat 2022-11-14 15:21:34 +01:00 • committed by Daniel Stenberg
parent 980510926d
commit 6967571bf2
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39 changed files with 771 additions and 243 deletions
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3
docs/examples/Makefile.am
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@ -34,7 +34,8 @@ EXTRA_DIST = README.md Makefile.example Makefile.inc Makefile.m32 \
#
# $(top_srcdir)/include is for libcurl's external include files
AM_CPPFLAGS = -I$(top_srcdir)/include
AM_CPPFLAGS = -I$(top_srcdir)/include \
-DCURL_DISABLE_DEPRECATION
LIBDIR = $(top_builddir)/lib