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62ec48cf1c
* The autoconf-archive package contains macros useful for detecting C++ standard and testing other C++ capabilities but that package was never included in the install_prereq script so many existing build environments won't have it. Even if it is installed, older versions won't newer C++ standards and will actually cause an error if you try to test for that version. To make it available for those environments, the ax_cxx_compile_stdcxx.m4 macro has copied from the latest release of autoconf-archive into the autoconf directory. * A convenience wrapper(ast_cxx_check_std) around ax_cxx_compile_stdcxx was also added so checking the standard version and setting the asterisk-specific PBX_ variables becomes a one-liner: `AST_CXX_CHECK_STD([std], [force_latest_std])`. Calling that with a version of `17` for instance, will set PBX_CXX17 to 0 or 1 depending on whether the current c++ compiler supports stdc++17. HAVE_CXX17 will also be 'defined" or not depending on the result. * C++ compilers hardly ever default to the latest standard they support. g++ version 14 for instance supports up to C++23 but only uses C++17 by default. If you want to use C++23, you have to add `-std=gnu++=23` to the g++ command line. If you set the second argument of AST_CXX_CHECK_STD to "yes", the macro will automatically keep the highest `-std=gnu++` value that worked and pass that to the Makefiles. * The autoconf-archive package was added to install_prereq for future use. * Updated configure.ac to use AST_CXX_CHECK_STD() to check for C++ versions 11, 14, 17, 20 and 23. * Updated configure.ac to accept the `--enable-latest-cxx-std` option which will set the second option to AST_CXX_CHECK_STD() to "yes". The default is "no". * ast_copy_string() in strings.h declares the 'sz' variable as volatile and does an `sz--` on it later. C++20 no longer allows the `++` and `--` increment and decrement operators to be used on variables declared as volatile however so that was changed to `sz -= 1`.
83 lines
1.7 KiB
Plaintext
83 lines
1.7 KiB
Plaintext
BLUETOOTH=@PBX_BLUETOOTH@
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BEANSTALK=@PBX_BEANSTALK@
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COROSYNC=@PBX_COROSYNC@
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CRYPTO=@PBX_CRYPTO@
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BFD=@PBX_BFD@
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BISON=@PBX_BISON@
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CODEC2=@PBX_CODEC2@
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CURL=@PBX_CURL@
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DAHDI=@PBX_DAHDI@
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DLADDR=@PBX_DLADDR@
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FLEX=@PBX_FLEX@
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FREETDS=@PBX_FREETDS@
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GENERIC_ODBC=@PBX_GENERIC_ODBC@
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GMIME=@PBX_GMIME@
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GNU_LD=@GNU_LD@
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GSM=@PBX_GSM@
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ILBC=@PBX_ILBC@
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GTK2=@PBX_GTK2@
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HOARD=@PBX_HOARD@
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ICAL=@PBX_ICAL@
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ICONV=@PBX_ICONV@
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IKSEMEL=@PBX_IKSEMEL@
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IMAP_TK=@PBX_IMAP_TK@
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IODBC=@PBX_IODBC@
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JACK=@PBX_JACK@
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JANSSON=@PBX_JANSSON@
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URIPARSER=@PBX_URIPARSER@
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KQUEUE=@PBX_KQUEUE@
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LDAP=@PBX_LDAP@
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LIBEDIT=@PBX_LIBEDIT@
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LIBJWT=@PBX_LIBJWT@
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LIBXML2=@PBX_LIBXML2@
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LIBXSLT=@PBX_LIBXSLT@
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XMLSTARLET=@PBX_XMLSTARLET@
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BASH=@PBX_BASH@
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LUA=@PBX_LUA@
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MYSQLCLIENT=@PBX_MYSQLCLIENT@
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NETSNMP=@PBX_NETSNMP@
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NEWT=@PBX_NEWT@
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NEON=@PBX_NEON@
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NEON29=@PBX_NEON29@
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OGG=@PBX_OGG@
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OPUS=@PBX_OPUS@
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OPUSFILE=@PBX_OPUSFILE@
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PGSQL=@PBX_PGSQL@
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PJPROJECT=@PBX_PJPROJECT@
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POPT=@PBX_POPT@
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PORTAUDIO=@PBX_PORTAUDIO@
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PRI=@PBX_PRI@
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OPENR2=@PBX_OPENR2@
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RESAMPLE=@PBX_RESAMPLE@
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FFTW3=@PBX_FFTW3@
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RADIUS=@PBX_RADIUS@
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LAUNCHD=@PBX_LAUNCHD@
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SNDFILE=@PBX_SNDFILE@
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SPANDSP=@PBX_SPANDSP@
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SPEEX=@PBX_SPEEX@
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SPEEXDSP=@PBX_SPEEXDSP@
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SPEEX_PREPROCESS=@PBX_SPEEX_PREPROCESS@
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SQLITE3=@PBX_SQLITE3@
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SRTP=@PBX_SRTP@
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SS7=@PBX_SS7@
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OPENSSL=@PBX_OPENSSL@
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SYSLOG=@PBX_SYSLOG@
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TONEZONE=@PBX_TONEZONE@
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UNBOUND=@PBX_UNBOUND@
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UNIXODBC=@PBX_UNIXODBC@
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VORBIS=@PBX_VORBIS@
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WINARCH=@PBX_WINARCH@
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ZLIB=@PBX_ZLIB@
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TIMERFD=@PBX_TIMERFD@
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NATIVE_ARCH=@AST_NATIVE_ARCH@
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HAVE_ADDRESS_SANITIZER=@AST_ADDRESS_SANITIZER@
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HAVE_LEAK_SANITIZER=@AST_LEAK_SANITIZER@
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HAVE_THREAD_SANITIZER=@AST_THREAD_SANITIZER@
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HAVE_UNDEFINED_SANITIZER=@AST_UNDEFINED_SANITIZER@
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NO_BINARY_MODULES=@PBX_NO_BINARY_MODULES@
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CXX11=@PBX_CXX11@
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CXX14=@PBX_CXX14@
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CXX17=@PBX_CXX17@
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CXX20=@PBX_CXX20@
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CXX23=@PBX_CXX23@
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