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Commit Graph

86 Commits

Author SHA1 Message Date
Marcel Raad
32ec3063df
curl-compilers.m4: enable missing-variable-declarations clang warning
It usually warns when forgetting to declare TU-local variables static.

Closes https://github.com/curl/curl/pull/1578
2017-06-16 22:32:05 +02:00
Marcel Raad
b5c5909f30
curl-compilers.m4: enable double-promotion warning
Enable -Wdouble-promotion for both GCC and clang. It warns on implicit
promotion from float to double.

Closes https://github.com/curl/curl/pull/1578
2017-06-16 22:31:57 +02:00
Marcel Raad
783ce023a5
curl-compilers.m4: enable vla warning for clang
Previously, that warning was only implicitly active in C90 mode.
Enable it unconditionally as already done for GCC.

Closes https://github.com/curl/curl/pull/1578
2017-06-16 22:31:48 +02:00
Marcel Raad
5e796c5e94
curl-compilers.m4: escape square brackets in regex
Otherwise, they are removed in the final configure file.
Also changed sed to "$SED" like in most other calls in this file.
2017-06-01 17:47:37 +02:00
Marcel Raad
5598b0bd63
curl-compilers.m4: fix compiler_num for clang
"clang -dumpversion" always returns "4.2.1", the GCC version that clang
was initially compatible to. Use "clang -v" instead, which returns the
actual clang version.

Fixes https://github.com/curl/curl/issues/1522
Closes https://github.com/curl/curl/pull/1523
2017-06-01 08:48:05 +02:00
Marcel Raad
314a7fa3ce
curl-compilers.m4: enable -Wshift-sign-overflow for clang
clang 2.9+ supports -Wshift-sign-overflow, which warns about undefined
behavior on signed left shifts when shifting by too many places.

Ref: https://github.com/curl/curl/issues/1516
Closes https://github.com/curl/curl/pull/1517
2017-05-31 10:06:53 +02:00
Marcel Raad
71d2d37005
curl-compilers.m4: accept -Og and -Ofast GCC flags
-Og, introduced in GCC 4.8, optimizes for debugging experience.
-Ofast, introduced in GCC 4.7, builds on -O3 and enables further
optimizations breaking strict standards compliance.
When specified in CFLAGS, these were always overridden by -O0 or -O2.
Fix this by adding them to flags_opt_all.

Ref: https://gcc.gnu.org/onlinedocs/gcc-4.8.0/gcc/Optimize-Options.html
Ref: https://github.com/curl/curl/pull/1404#issuecomment-296401570
Closes https://github.com/curl/curl/pull/1440
2017-04-24 10:56:56 +02:00
Marcel Raad
9168e2470d
curl-compilers.m4: turn implicit function declarations into errors
This adds -Werror-implicit-function-declaration for GCC 2.95+ so that
these errors are visible at the point where they occur instead of only
at link time.
Implicit function declarations are illegal in C99 and C++ anyway, and
the same warning has been turned into an error for ICC in commit
3072c5b8a1.

Ref: https://gcc.gnu.org/onlinedocs/gcc-2.95.2/gcc_2.html#SEC8
Ref: https://curl.haxx.se/mail/lib-2017-04/0001.html
Closes https://github.com/curl/curl/pull/1419
2017-04-15 21:17:56 +02:00
Daniel Stenberg
27302abb94 s/cURL/curl
We're mostly saying just "curl" in lower case these days so here's a big
cleanup to adapt to this reality. A few instances are left as the
project could still formally be considered called cURL.
2016-11-07 10:36:23 +01:00
Kamil Dudka
b2dcf0347f curl-compilers.m4: improve detection of GCC's -fvisibility= flag
Some builds of GCC produce output on both stdout and stderr when --help
--verbose is used.  The 2>&1 redirection caused them to be arbitrarily
interleaved with each other because of stream buffering.  Consequently,
grep failed to match the fvisibility= string in the mixed output, even
though the string was present in GCC's standard output.

This led to silently disabling symbol hiding in some builds of curl.
2016-06-21 12:58:24 +02:00
Dan Fandrich
093f9cd38d URLs: Change more haxx.se URLs from http: to https: 2016-02-03 01:45:21 +01:00
Daniel Stenberg
4af40b3646 URLs: change all http:// URLs to https:// 2016-02-03 00:19:02 +01:00
Daniel Stenberg
092f33d6bf configure: use icc options without space
The latest version(s) of the icc compiler no longer accept the extra
space in the -we (warning enable), -wd (warning disable), etc.

Reported-by: Elmira A Semenova
Bug: http://curl.haxx.se/mail/lib-2013-09/0182.html
2013-09-27 10:57:20 +02:00
Daniel Stenberg
09634f46fb configure: improve CURL_CHECK_COMPILER_PROTOTYPE_MISMATCH
The compiler test used a variable before it was assigned when it tried
to see how it acts on a mismatching prototype, which could cause a false
positive.
2013-09-07 11:15:18 +02:00
Yang Tse
70b5173410 configure: use XC_LIBTOOL for portability across libtool versions 2013-03-08 13:27:45 +01:00
Yang Tse
9d1effad05 configure: autotools compatibility fixes - step I
Fix proper macro expansion order across autotools versions for
C compiler and preprocessor program checks.
2013-01-20 20:23:20 +01:00
Yang Tse
57fa576a35 configure: check if compiler halts on function prototype mismatch 2012-12-16 18:51:51 +01:00
Daniel Stenberg
c277bd6ce7 autoconf: don't force-disable compiler debug option
When nothing is told to configure, we should not enforce switching off
debug options with -g0 (or similar). We instead don't use -g at all in
that situaion and therefore allow the user's CFLAGS settings possibly
dictate what to do.
2012-11-16 13:06:49 +01:00
Yang Tse
60d5a16b99 curl-compilers.m4: remove -Wstrict-aliasing=3 from clang
Currently it is unknown if there is any version of clang that
actually supports -Wstrict-aliasing. What is known is that there
are several that don't support it.
2012-06-29 16:40:23 +02:00
Yang Tse
f1474db360 curl-compilers.m4: -Wstrict-aliasing=3 for warning enabled gcc and clang builds 2012-06-26 21:24:30 +02:00
Yang Tse
bd12c44d35 curl-compilers.m4: -Wno-pedantic-ms-format for Windows gcc 4.5 builds
When building a Windows target with gcc 4.5 or newer and strict compiler
warnings enabled use -Wno-pedantic-ms-format in addition to other flags.
2012-04-16 22:12:02 +02:00
Jonathan Nieder
8b63b48627 headers: surround GCC attribute names with double underscores
This protects from attribute names being defined by third party's code.

Improvement: http://curl.haxx.se/mail/lib-2012-04/0127.html
2012-04-14 15:06:57 +02:00
Yang Tse
9e24b9c7af build adjustments: CURL_HIDDEN_SYMBOLS no longer defined in config files
configure script now provides conditional definitions for Makefile.am
that result in CURL_HIDDEN_SYMBOLS being defined by resulting makefiles
when appropriate.

Additionally, configure script option for symbol hiding control is now
named --enable-symbol-hiding --disable-symbol-hiding. While still valid,
old option name --enable-hidden-symbols --disable-hidden-symbols will
be deprecated in some future release.
2012-04-11 19:33:54 +02:00
Yang Tse
3ef6418b61 curl-compilers.m4: serial number bump 2011-08-08 18:25:01 +02:00
Yang Tse
56ef3e295f curl-compilers.m4: CURL_CONVERT_INCLUDE_TO_ISYSTEM adjustments:
Add CURL_CHECK_COMPILER as a requirement.

Ensure macro does nothing unless GNU_C or CLANG compiler is used.

This should allow usage of this macro in unforeseen placements.
2011-08-08 17:50:16 +02:00
Yang Tse
fba00c9f7b xlc: avoid preprocessor definition usage when linking 2011-06-04 04:27:09 +02:00
Yang Tse
dd5d3518e4 configure: undo using autobuilds to temporarily verify strict aliasing warnings. 2010-12-02 19:09:15 +01:00
Yang Tse
1c4fa240be configure: use autobuilds to temporarily verify strict aliasing warnings.
Temporarily, When cross-compiling with gcc 3.0 or later, enable strict aliasing
rules and warnings. Given that cross-compiled targets autobuilds do not run the
2010-11-18 17:12:15 +01:00
Yang Tse
7cebf22d57 serial number bump 2010-11-09 01:40:25 +01:00
Daniel Stenberg
2309b4e330 remove the CVSish $Id$ lines 2010-03-24 11:02:54 +01:00
Daniel Johnson
3cd5b1cfb0 Fix warnings for clang 2010-03-22 19:44:45 +01:00
Yang Tse
d9291eb4b8 replaced intel compiler option -no-ansi-alias with -fno-strict-aliasing 2010-03-17 10:44:28 +00:00
Daniel Stenberg
f5d8c0befc Daniel Johnson provided fixes for building with the clang compiler 2010-03-05 22:53:30 +00:00
Dan Fandrich
d3e35d49ae Added a few more compiler warning options for gcc. 2009-06-17 02:26:39 +00:00
Yang Tse
065047dc62 Added --enable-curldebug configure option to enable and disable building
with the low-level curl debug memory tracking 'feature' to allow decoupled
setting from --enable-debug.
2009-06-09 17:59:28 +00:00
Yang Tse
f3e6a582d4 remove outdated comment 2009-05-15 09:35:46 +00:00
Yang Tse
7a928b40f3 Proper naming for the experimental compiler test and moved to *-compilers.m4 2009-05-07 13:58:15 +00:00
Yang Tse
cfda3e6a48 Moved *_CHECK_COMPILER_HALT_ON_ERROR and *_CHECK_COMPILER_ARRAY_SIZE_NEGATIVE to *-compilers.m4 along with other *_CHECK_COMPILER_* 2009-05-07 11:06:48 +00:00
Yang Tse
f6b55fae79 remove compiler options used while debugging the icc 9.1 optimizer issue 2009-04-17 07:48:37 +00:00
Yang Tse
9bb1854398 Set HP-UX compiler warning level back to the one that exposes
the socklen_t issue on this platform.
2009-04-15 22:54:25 +00:00
Yang Tse
c36f0e71b6 attempting to keep lines below 80 chars 2008-11-18 20:13:55 +00:00
Dan Fandrich
820011dedc Added more compiler warning options for gcc 4.3 2008-11-17 21:11:10 +00:00
Yang Tse
d104216bbe icc adjustments:
Select ANSI C89 dialect plus GNU extensions, again.
2008-10-25 04:18:48 +00:00
Yang Tse
71edaf4d01 some more temporary magic for the icc seg-fault issue 2008-10-24 12:23:24 +00:00
Yang Tse
2b77d50776 icc permanent adjustment:
Select precise floating-point model, otherwise doubles are less than 64-bit wide

icc test adjustment:

  Select c89 dialect
2008-10-24 11:27:09 +00:00
Yang Tse
198fa5e3c7 icc adjustments:
Enable more icc warnings.

  Optimization disabling options used only for icc 9.1
2008-10-23 10:04:06 +00:00
Yang Tse
b93f4f623c some more temporary magic for the icc seg-fault issue 2008-10-22 13:30:09 +00:00
Yang Tse
db325d1f43 some more temporary magic for the icc seg-fault issue 2008-10-21 17:54:18 +00:00
Yang Tse
231a51fe7a some more temporary magic for the icc seg-fault issue 2008-10-20 15:56:08 +00:00
Yang Tse
8d0cbaf8df messages initially intended only for debug purposes, now become permanent
since these are extremely useful when compiler rejects a set of options.
2008-10-19 23:50:18 +00:00