ASTERISK-27820

Change-Id: I310896143e94d65da1c2be3bb448204a8b86d557

* Replace all 'else if' statements with 'elif'.
* Use loop to detect versioned lua headers and libraries.

The loop for detecting lua fixes a bug where LUA_INCLUDE would be
appended with the directory of every lua version after the first one is
found.

Change-Id: I3276f9aee955014108345be6092f51c932b43a0f

The previous change was not complete.

ASTERISK-27435

Change-Id: I11082c14c0ef9c6af8c995084a6851337ea2a90f

ASTERISK-27761

Change-Id: Ib17a7415297a210cfcdbf149e4df9b6edadbfab6

Something is causing a python2/python3 mismatch on Fedora27.

PYTHON='/usr/bin/python2'
PYTHONDEV_CFLAGS='-I/usr/include/python3.6m '
PYTHONDEV_INCLUDE='-I/usr/include/python3.6m '
PYTHONDEV_LIB='-lpython3.6m '
PYTHONDEV_LIBS='-lpython3.6m '

This reverts commit be0e9920.

Change-Id: I86dd102eb3ead199fe89178cdbadb36b4e2cfd1b

AST_EXT_LIB_CHECK has several optional parameters. When an optional parameter
is left empty, [] is used to indicate this. However, this is done in the script
./configure only then, when a further parameter is not empty. For example, when
no extra libraries are needed to test the checked library, parameter 5 is not
mentioned. Except parameter 6 and higher are used, then parameter 5 must be
empty.

However, this general rule was broken
* four times for parameter 5 (extra libs) and
* three times for parameter 4 (header)
as found via the Regular Expression \[\]\). In case of parameter 5, all cases
were changed, because that happened for no reason. In case of parameter 4, an
[] improves readability actually. Therefore for parameter 4, the only case which
did not do it was changed. All this aims to create more consistency: Only do
something different if there is a reason to do so.

Change-Id: I037ef170cf1ad94497151a9ea5071a31c656cafe

Asterisk uses various symbols of the shared library libogg within the module
format_ogg_vorbis. However, the source code of that module did not include the
header file of libogg explicitly but implicitly. Because that header was not
included before Asterisk 14, the script ./configure was told not to check for
it.

Anyway, even Asterisk 13 LTS uses symbols of libogg. Therefore, that header
should be included explicitly. Therefore, ./configure should check for that
header.

Change-Id: I98c50d56311b68880d1084fcc62c35ab2f8692db

./configure --with-pjproject-bundled
did not display an explanation, when no download utility like wget, curl, or
fetch was installed beforehand, although an explanation existed in code. This
happened because the code expected the variable DOWNLOAD_TO_STDOUT to be empty.
However, the script ./configure set that variable always.

Change-Id: I64c99b76a03525c69471e5055bf124b36a51bbd4

Asterisk does not need the development package of libltdl, because it does not
use any symbol of -lltdl directly. Instead, it uses the runtime package via the
shared library -lodbc. On the supported platforms, that shared library declares
its dependency on -lltdl correctly, otherwise AST_EXT_LIB_CHECK would have
failed.

ASTERISK-27745

Change-Id: Icd315809b8e7978203431f3afb66240dd3a040ba

ASTERISK-27717

Change-Id: If90ddf9c396c32e7402a894f42dce215c30049d1

Nine years ago with Mantis 13639 (now ASTERISK-12841) an extra case for OpenBSD
was introduced: Vorbis required Ogg to be specified manually, because the shared
library libvorbis.so did not specify its required dependency on -logg itself.

Today with OpenBSD 6.2, all libvorbis*.so declare their dependencies correctly.
Therefore, an extra case is not required anymore.

Change-Id: Ifd04e0994ce9f1e4ad29c3948a0398b91d1e97bc

In the script ./configure, AST_EXT_LIB_CHECK checks for external libraries. Some
libraries do not specify all their dependencies and require additional shared
libraries. In AST_EXT_LIB_CHECK, this is the fifth parameter. However, if a
library is specified there, it must exist on the platform, because ./configure
tries to compile/link/execute a small app using those statements. For example,
the library libdl.so is Linux specific and does not exist on BSD-like platforms.

Furthermore, no supported platform/version was found, which still (ever?)
requires those additional libraries. Therefore, they were simply removed.

Finally, this change adds the error code ESTRPIPE to the channel driver
chan_alsa for those platforms which lack it, again for example NetBSD.

ASTERISK-27720

Change-Id: I3b21f2135f6cbfac7590ccdc2df753257f426e0b

ASTERISK-27734

Change-Id: I8d6e6a1c08c031649764f5277fbbb85e57c3a9d4

Headers, libraries, and rpath.

ASTERISK-27728
ASTERISK-11015
Reported by: Curt Sampson

Change-Id: I50aa5fcd095937df32a2e33307caac7e79a8b5b7

In the script ./configure, AST_EXT_LIB_CHECK and AST_PKG_CONFIG_CHECK first test
whether parameter 1 was already found. Consequently, an if-test on PBX_ just a
line below is redundant, if exactly the same parameter 1 is used again.

No performance gain is expected by this change. However, because this strategy
is used all over in ./configure except for two places, this change aims to
create more consistency: Only do something different if there is a reason to do
so.

Change-Id: I4a6f48127b7af3a48168c917e888be1f70625027

ASTERISK-27641

Change-Id: I587e8ba0123c70fc10cfd8b0ac3299551f61d84b

As a side-effect, this avoids the ambiguous output:
 checking for uuid_generate_random... no
which was printed always previously.

ASTERISK-25586
Reported by: John Nemeth

Change-Id: I6d541dfcf453932a9856c5e251aa22e0e6c233c9

In the script ./configure,
xyz_LIB  is set by AST_PKG_CONFIG_CHECK and
xyz_LIBS is set by PKG_CHECK_MODULES within
AST_PKG_CONFIG_CHECK. Both are the same. In Asterisk normally the former and
only three times the latter was used. Let us use xyz_LIB without s, for
consistency with AST_EXT_LIB_CHECK. That eases understanding because now readers
do not have to know that xyz_LIB equals xyz_LIBS.

Change-Id: I7359860a5d730cdc784c2c48e501a082196434d3

In NetBSD, PortAudio 1 is still the default version. PortAudio 2 can be
installed side by side but gets placed in a 'portaudio2' subdirectory. To
find PortAudio 2 even in a subdirectory, the tool pkg-config is queried via
AST_PKG_CONFIG_CHECK. For those platforms, which do not list PowerAudio 2
via pkg-config, the previous check remains and is executed thereafter.

ASTERISK-27721

Change-Id: I4175500126909ad1b181fff8e11bb4a3a6ae4fa9

luaL_openlib got removed with Lua 5.2.
luaL_newstate is available in all versions.

ASTERISK-27718

Change-Id: I9c8c8880315ee36ab740d7c40153306c0bfd6f71

ASTERISK-27712
Reported by: Joerg Sonnenberger, D'Arcy Cain

Change-Id: Idf1c9d43617a3e13028b95b313415903d80ef807

ASTERISK-27709
Reported by: John Nemeth

Change-Id: I11b1ae8fd404c04066f1458f5d71f9536359d58d

Reported by: Stuart Henderson

Change-Id: Ieae8624f48b6ae78cf29930b9a45a3c842c7a764

ASTERISK-27681
Reported by: Stuart Henderson

Change-Id: Ifb6b614acb251b695b9417d76510e73eb335b679

ASTERISK-27677

Change-Id: I0854e3616d1361ae9b6907d3d3444a02784ac62b

ASTERISK-27670

Change-Id: I07a8ef8bbd6001e25711fa1bff152eb6c9efa729

This removes the embedded copy of editline from the Asterisk source
tree, making a system copy of libedit mandatory in Asterisk 16+.

ASTERISK-27634 #close

Change-Id: Iedb64ad92acb78419f3caefedaa2bb7cd2a1a33f

AC_COMPUTE_INT requires at least autoconf 2.60a.

This affects only those who contribute to Asterisk, only those who had to use
the script ./bootstrap.sh. Furthermore, this change just makes sure nobody is
using a too old autoconf.

ASTERISK-16951

Change-Id: Ibca850e2fe0e77d935207bd959bacf7197d7f637

This change causes the configure script to throw an error if neither
__sync nor __atomic builtin functions are available.

ASTERISK-27619

Change-Id: Ie01a281e0f5c41dfeeb5f250c1ccea8752f56ef9

Add a check to configure.ac for __atomic_fetch_add support.  If found
use the __atomic built-in operators for ast_atomic_dec_and_test and
ast_atomic_fetchadd_int.

ASTERISK~27619

Change-Id: I65b4feb02bae368904ed0fb03f585c05f50a690e

ASTERISK-27602

Change-Id: I9f4d3d2bc1481748e39ad1e2b0a364d38e38978b

ASTERISK-27593

Change-Id: I1c7087f7f7582e40b3312c690d912c9a86466805

On some platforms, you decide to go for one specific version of Lua, for
example in OpenBSD. On other platforms, you are able to install several versions
side-by-side, for example in Ubuntu and Fedora. Asterisk already works with
Lua 5.3. Asterisk failed to detect Lua 5.3 on those platforms which allow
several versions.

ASTERISK-27592

Change-Id: If7a4b395d844a464e9a1f4f626c5bff4ee67eed8

ASTERISK-27585

Change-Id: I27c67563788e6f67eeda5fb51a741823a50a95e2

When an older GCC version is called with a too new warning option, GCC exited
with an error and Asterisk was not built. Therefore, the configure script tests
the installed compiler whether it supports that warning option. If not, Asterisk
does not pass it to the installed compiler. However, some compilers (like clang)
do not exit (error) but give just a warning in such a case. Because the compiler
did not exit, Asterisk passed the unknown-warning option.

ASTERISK-27560

Change-Id: Ia9b7747f649b27ff5e9f75c3db3fee4fe7a29621

The `pwd` parameter to AC_CONFIG_AUX_DIR is unnecessary, the default
value is $srcdir.

Additionally remove the AC_REVISION call.  It only added a comment and
is pointless without SVN tag replacements.

Change-Id: I99299a3217f095bddcb2edefb3b9af0ab147bc29

ASTERISK-27435

Change-Id: Id318a7ae6d7d69b53f911d30bf3eece64852f15c

OSX does not support 'readlink -f' or 'sed -r'.  Replace readlink with
the GNU make macro 'realpath'.  Replace sed with grep in one place, cut
in the other.

ASTERISK-27332

Change-Id: I5d34ecca905384decb22ead45c913ae5e8aff748

This change causes the configure script to fail if the C compiler does
not support both function attributes constructor and destructor.  These
were already required as modules cannot function without these attributes
and Asterisk requires modules.

This also has AST_GCC_ATTRIBUTE set a variable
ax_cv_have_func_attribute_$1.  This is the same variable name used by
autoconf-archive's AX_GCC_FUNC_ATTRIBUTE, used for the same purpose.

Change-Id: Id68e8a1447f2a6d707c54b56350e7bfdb33fb663

This check is being added to make it easier for end-users of third party
open source Opus modules.  This was removed by ASTERISK-26426 but only
the module needed to be removed.

Change-Id: I62b9cd0c4fa8a77596ab0e042948a643a1152677