new tool to test gcc4/5 ABI
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9a47744fc0
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@ -0,0 +1,19 @@
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CFLAGS = -Wall
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LOADLIBES = -ldl
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gcc-glibmm-abi-check:
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$(CC) $(CPPFLAGS) $(CFLAGS) \
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-o gcc-glibmm-abi-check \
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abicheck.c \
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$(LDFLAGS) $(LOADLIBES)
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check: gcc-glibmm-abi-check
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./gcc-glibmm-abi-check
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gcc-glibmm-abi-check.1: gcc-glibmm-abi-check
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help2man -N \
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-n 'glib gcc4/5 C++11 ABI compatibility test' \
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-o gcc-glibmm-abi-check.1 \
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./gcc-glibmm-abi-check
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.PHONY: check
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@ -0,0 +1,34 @@
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g++5 ABI test tool
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==================
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This is a simple tool to test a system for g++5's glibmm at runtime.
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GCC5.1 introduced a new ABI for the C++ standard library.
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The old 3.4 .. 5.0 ABI is not compatible. By default gcc provides a
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dual ABI, so testing libstc++ itself is not sufficient.
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Some GNU/Linux distributions systems switched to the new ABI already
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and compile *plugins* with the new gcc.
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If a plugin uses a c++ library that is also shipped with ardour-bundles,
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the ABI of that library must match. Currently known cases: gtkmm, glibmm.
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e.g. Ingen or eq10q provided by a distro compiled with gcc5 will not
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load in Ardour from ardour.org compiled with gcc4 because ardour
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ships an incompatible gtkmm, glibmm, cairomm, ...
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Likewise Ardour gcc5-compiled binaries will fail to load plugins that
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are compiled with gcc4.
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This simiple tool `gcc-glibmm-abi-check` checks for gcc4/gcc5 specific
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symbols in libglibmm (a common denominator C++ lib), it is intended
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to be run when deploying ardour binaries.
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References
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----------
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https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dual_abi.html
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https://wiki.debian.org/GCC5
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https://mail.gnome.org/archives/gtkmm-list/2015-June/thread.html
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@ -0,0 +1,166 @@
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// gcc -Wall -o gcc-glibmm-abi-check abicheck.c -ldl
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// help2man -N -n 'glib gcc4/5 C++11 ABI compatibility test' -o gcc-glibmm-abi-check.1 ./gcc-glibmm-abi-check
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#include <stdio.h>
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#include <dlfcn.h>
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#include <getopt.h>
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#ifndef VERSION
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#define VERSION "0.1"
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#endif
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static void print_usage (void) {
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printf ("gcc-glibmm-abi-check - gcc4/5 C++11 ABI compatibility test\n\n");
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printf ("Usage: gcc-glibmm-abi-check [ OPTIONS ]\n\n");
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printf (
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"This tool checks for C++ specific symbols in libglimm which are different in\n"
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"the gcc4 and gcc5/c++11 ABI in order to determine system-wide use of gcc5.\n"
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// TODO document error codes,...
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);
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printf ("\nOptions:\n"
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" -f, --fail fail if system cannot be determined.\n"
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" -h, --help Display this help and exit.\n"
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" -4, --gcc4 Test succeeds if gcc4 ABI is found.\n"
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" -5, --gcc5 Test succeeds if gcc5 ABI is found.\n"
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" -g <soname>, --glibmm <soname>\n"
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" Specify alternative file for libglibmm-2.4.so\n"
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" -v, --verbose Print information.\n"
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" -V, --version Print version information and exit.\n"
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);
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}
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static void print_version (void) {
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printf ("gcc-glibmm-abi-check version %s\n\n", VERSION);
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printf (
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"Copyright (C) GPL 2015 Robin Gareus <robin@gareus.org>\n"
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"This is free software; see the source for copying conditions. There is NO\n"
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"warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n");
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}
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int main (int argc, char **argv) {
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int expect = 0;
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int error_fail = 0;
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int verbose = 0;
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char *glibmm = "libglibmm-2.4.so";
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const struct option long_options[] = {
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{ "help", no_argument, 0, 'h' },
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{ "gcc4", no_argument, 0, '4' },
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{ "gcc5", no_argument, 0, '5' },
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{ "glibmm", required_argument, 0, 'g' },
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{ "version", no_argument, 0, 'V' },
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};
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const char *optstring = "fh45g:vV";
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int c;
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while ((c = getopt_long (argc, argv, optstring, long_options, NULL)) != -1) {
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switch (c) {
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case 'f':
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error_fail = 1;
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break;
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case 'h':
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print_usage ();
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return 0;
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break;
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case '4':
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expect |= 1;
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break;
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case '5':
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expect |= 2;
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break;
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case 'g':
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glibmm = optarg;
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break;
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case 'v':
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verbose = 1;
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break;
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case 'V':
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print_version ();
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return 0;
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break;
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default:
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fprintf (stderr, "invalid argument.\n");
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print_usage ();
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return -1;
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break;
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}
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}
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int gcc5 = 0;
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int gcc4 = 0;
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dlerror (); // reset error
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void *h = dlopen (glibmm, RTLD_LAZY);
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if (!h) {
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if (verbose) {
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fprintf (stderr, "Cannot open '%s': %s.\n", glibmm, dlerror ());
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}
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return error_fail ? 3 : 0;
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}
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// Glib::ustring::ustring(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
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if (dlsym (h, "_ZN4Glib7ustringC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE")) {
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gcc5 |= 1;
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}
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// Glib::ustring::ustring(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
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if (dlsym (h, "_ZN4Glib7ustringC1ERKSs")) {
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gcc4 |= 1;
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}
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// Glib::Module::Module(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, Glib::ModuleFlags)
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if (dlsym (h, "_ZN4Glib6ModuleC1ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEENS_11ModuleFlagsE")) {
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gcc5 |= 2;
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}
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// Glib::Module::Module(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, Glib::ModuleFlags)
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if (dlsym (h, "_ZN4Glib6ModuleC1ERKSsNS_11ModuleFlagsE")) {
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gcc4 |= 2;
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}
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// Glib::ustring::operator=(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
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if (dlsym (h, "_ZN4Glib7ustringaSERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEE")) {
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gcc5 |= 4;
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}
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// Glib::ustring::operator=(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)
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if (dlsym (h, "_ZN4Glib7ustringaSERKSs")) {
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gcc4 |= 4;
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}
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dlclose (h);
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if (7 != (gcc4 ^ gcc5)) {
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if (verbose) {
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fprintf (stderr, "Inconsistent result: gcc4=%x gcc5=%x\n", gcc4, gcc5);
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}
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}
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else if (gcc4 == 7) {
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if (verbose) {
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printf ("System uses gcc4 c++ ABI\n");
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}
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if (expect != 0) {
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return (expect & 1) ? 0 : 1;
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}
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}
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else if (gcc5 == 7) {
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if (verbose) {
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printf ("System uses gcc5 c++11 ABI\n");
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}
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if (expect != 0) {
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return (expect & 2) ? 0 : 1;
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}
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}
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else if (verbose) {
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fprintf (stderr, "Incomplete result: gcc4=%x gcc5=%x\n", gcc4, gcc5);
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}
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return error_fail ? 2 : 0;
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}
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@ -0,0 +1,22 @@
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#!/usr/bin/env python
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from waflib.extras import autowaf as autowaf
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from waflib import Options
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import os
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# Mandatory variables
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top = '.'
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out = 'build'
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def options(opt):
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autowaf.set_options(opt)
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def configure(conf):
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conf.load('compiler_c')
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autowaf.configure(conf)
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def build(bld):
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obj = bld(features = 'c cprogram')
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obj.source = [ 'abicheck.c' ]
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obj.target = 'gcc-glibmm-abi-check'
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obj.name = 'gcc-glibmm-abi-check'
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obj.lib = 'dl'
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2
wscript
2
wscript
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@ -1070,6 +1070,7 @@ int main () { int x = SFC_AUTO_DOWNGRADE_RF64; return 0; }
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sub_config_and_use(conf, 'libs/appleutility')
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elif Options.options.dist_target != 'mingw':
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sub_config_and_use(conf, 'tools/sanity_check')
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sub_config_and_use(conf, 'tools/gccabicheck')
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sub_config_and_use(conf, 'libs/clearlooks-newer')
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bld.recurse('libs/appleutility')
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elif bld.env['build_target'] != 'mingw':
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bld.recurse('tools/sanity_check')
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bld.recurse('tools/gccabicheck')
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bld.recurse('libs/clearlooks-newer')
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