Failed to build with g++ 14.2.0

[manuel-arguelles]

I'm getting lots of errors trying to build waybar:

Project version: 0.11.0
C compiler for the host machine: ccache cc (gcc 14.2.0 "cc (GCC) 14.2.0")
C++ compiler for the host machine: ccache c++ (gcc 14.2.0 "c++ (GCC) 14.2.0")

ccache c++ -Iwaybar.p -I. -I.. -I../include -I../subprojects/cava-0.10.2/include -Iresources/icons -Iprotocol -I/usr/include/sigc++-2.0 -I/usr/lib64/sigc++-2.0/include -I/usr/include/jsoncpp -I/usr/include/gtkmm-3.0 -I/usr/lib64/gtkmm-3.0/include -I/usr/include/atkmm-1.6 -I
/usr/lib64/atkmm-1.6/include -I/usr/include/gtk-3.0/unix-print -I/usr/include/gdkmm-3.0 -I/usr/lib64/gdkmm-3.0/include -I/usr/include/giomm-2.4 -I/usr/lib64/giomm-2.4/include -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/dbus
-1.0 -I/usr/lib64/dbus-1.0/include -I/usr/include/elogind -I/usr/include/gio-unix-2.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pangomm-1.4 -I/usr/lib64/pangomm-1.4/include -I/usr/include/glibmm-2.4 -I/usr/lib64/glibmm-2.4/include -I/usr/include/cairomm-1.0
 -I/usr/lib64/cairomm-1.0/include -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/fribidi -I/usr/include/freetype2 -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng16 -I/usr/include/webp -I/usr/include/libmount -I/usr/include/blkid 
-I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/libdbusmenu-gtk3-0.4 -I/usr/include/libdbusmenu-glib-0.4 -I/usr/include/libnl3 -I/usr/include/libupower-glib -I/usr/include/polkit-1 -I/usr/include/pipewire-0.3 -I/usr/include/spa-0.2 -I/usr/include/wirepl
umber-0.5 -I/usr/include/libevdev-1.0/ -I/usr/include/gtk-layer-shell -I/usr/include/libxml2 -I/usr/include/SDL2 -fdiagnostics-color=always -D_GLIBCXX_ASSERTIONS=1 -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=c++20 -O3 '-DVERSION="0.11.0"' -DHAVE_LANGINFO_1STDAY '-DSYSCO
NFDIR="/usr/local/etc"' -DHAVE_CPU_LINUX -DHAVE_MEMORY_LINUX -DHAVE_SYSTEMD_MONITOR -DHAVE_SWAY -DHAVE_WLR_TASKBAR -DHAVE_RIVER -DHAVE_DWL -DHAVE_HYPRLAND -DHAVE_NIRI -DHAVE_LIBNL -DHAVE_GAMEMODE -DHAVE_LOGIND_INHIBITOR -DHAVE_UPOWER -DHAVE_PIPEWIRE -DHAVE_LIBPULSE -DHAVE_L
IBJACK -DHAVE_LIBW
IREPLUMBER -DHAVE_DBUSMENU -DHAVE_LIBUDEV -DHAVE_LIBEVDEV -DHAVE_LIBINPUT -DHAVE_CHRONO_TIMEZONES -DHAVE_LIBCAVA -D_DEFAULT_SOURCE -D_XOPEN_SOURCE=600 -pthread -D_REENTRANT -DSPDLOG_SHARED_LIB -DFMT_SHARED -DSPDLOG_COMPILED_LIB -MD -MQ waybar.p/src_config.cpp.o -MF waybar.p/src_config.cpp.o.d -o waybar.p/src_config.cpp.o -c ../src/config.cpp
In file included from /usr/include/fmt/ostream.h:23,
                 from ../include/util/json.hpp:3,
                 from ../src/config.cpp:11:
/usr/include/fmt/chrono.h: In function ‘void fmt::v10::detail::write_codecvt(codecvt_result<CodeUnit>&, fmt::v10::string_view, const std::locale&)’:
/usr/include/fmt/chrono.h:352:20: error: ‘diagnostic’ was not declared in this scope
  352 |   FMT_PRAGMA_CLANG(diagnostic push)
      |                    ^~~~~~~~~~
/usr/include/fmt/chrono.h:352:3: error: there are no arguments to ‘FMT_PRAGMA_CLANG’ that depend on a template parameter, so a declaration of ‘FMT_PRAGMA_CLANG’ must be available [-fpermissive]
  352 |   FMT_PRAGMA_CLANG(diagnostic push)
      |   ^~~~~~~~~~~~~~~~
/usr/include/fmt/chrono.h:352:3: note: (if you use ‘-fpermissive’, G++ will accept your code, but allowing the use of an undeclared name is deprecated)
/usr/include/fmt/chrono.h:352:36: error: expected ‘;’ before ‘FMT_PRAGMA_CLANG’
  352 |   FMT_PRAGMA_CLANG(diagnostic push)
      |                                    ^
      |                                    ;

Versions:
fmt 11.1.1
gcc 14.2.0
llvm 19.1.6

I tried setting -fpermissive but didn't work.

[jayjwa]

I'm seeing similar.

[75/217] Compiling C++ object test/waybar_test.p/.._src_config.cpp.o
FAILED: test/waybar_test.p/.._src_config.cpp.o
ccache c++ -Itest/waybar_test.p -Itest -I../test -I../include -I/usr/include/gtkmm-3.0 -I/usr/lib64/gtkmm-3.0/include -I/usr/include/atkmm-1.6 -I/usr/lib64/atkmm-1.6/include -I/usr/include/gtk-3.0/unix-print -I/usr/include/gdkmm-3.0 -I/usr/lib64/gdkmm-3.0/include -I/usr/include/giomm-2.4 -I/usr/lib64/giomm-2.4/include -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/dbus-1.0 -I/usr/lib64/dbus-1.0/include -I/usr/include/elogind -I/usr/include/gio-unix-2.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pangomm-1.4 -I/usr/lib64/pangomm-1.4/include -I/usr/include/glibmm-2.4 -I/usr/lib64/glibmm-2.4/include -I/usr/include/cairomm-1.0 -I/usr/lib64/cairomm-1.0/include -I/usr/include/sigc++-2.0 -I/usr/lib64/sigc++-2.0/include -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/fribidi -I/usr/include/freetype2 -I/usr/include/pixman-1 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng16
-I/usr/include/webp -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -fdiagnostics-color=always -D_GLIBCXX_ASSERTIONS=1 -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=c++20 -O3 '-DVERSION="0.11.0"' -DHAVE_LANGINFO_1STDAY '-DSYSCONFDIR="/usr/local/etc"' -DHAVE_CPU_LINUX -DHAVE_MEMORY_LINUX -DHAVE_SYSTEMD_MONITOR -DHAVE_SWAY -DHAVE_WLR_TASKBAR -DHAVE_RIVER -DHAVE_DWL -DHAVE_HYPRLAND -DHAVE_NIRI -DHAVE_LIBNL -DHAVE_GAMEMODE -DHAVE_LOGIND_INHIBITOR -DHAVE_UPOWER -DHAVE_PIPEWIRE -DHAVE_LIBPULSE -DHAVE_LIBJACK -DHAVE_LIBWIREPLUMBER -DHAVE_DBUSMENU -DHAVE_LIBUDEV -DHAVE_LIBEVDEV -DHAVE_LIBINPUT -DHAVE_CHRONO_TIMEZONES -DHAVE_LIBCAVA -DSPDLOG_SHARED_LIB -DFMT_SHARED -DSPDLOG_COMPILED_LIB -pthread -MD -MQ test/waybar_test.p/.._src_config.cpp.o -MF test/waybar_test.p/.._src_config.cpp.o.d -o test/waybar_test.p/.._src_config.cpp.o -c ../src/config.cpp
In file included from /usr/include/fmt/ostream.h:23,
                 from ../include/util/json.hpp:3,
                 from ../src/config.cpp:11:
/usr/include/fmt/chrono.h: In function ‘void fmt::v10::detail::write_codecvt(codecvt_result<CodeUnit>&, fmt::v10::string_view, const std::locale&)':
/usr/include/fmt/chrono.h:352:20: error: ‘diagnostic' was not declared in this scope

  352 |   FMT_PRAGMA_CLANG(diagnostic push)
      |                    ^~~~~~~~~~
/usr/include/fmt/chrono.h:352:3: error: there are no arguments to ‘FMT_PRAGMA_CLANG' that depend on a template parameter, so a declaration of ‘FMT_PRAGMA_CLANG' must be available [-fpermissive]
  352 |   FMT_PRAGMA_CLANG(diagnostic push)
      |   ^~~~~~~~~~~~~~~~
/usr/include/fmt/chrono.h:352:3: note: (if you use ‘-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)
/usr/include/fmt/chrono.h:352:36: error: expected ‘;' before ‘FMT_PRAGMA_CLANG'
  352 |   FMT_PRAGMA_CLANG(diagnostic push)

gcc-14.2.0 (also tested clang 19.1.6), fmt-11.1.1, Waybar-0.11.0. Slackware current. I tried building with default options and with Slackware-specific and both failed.

[earies]

This appears related to fmt 10 -> 11 transition. fmt 11.1.2 was just released yesterday and slackware-current has not caught up yet but this also does not appear to resolve.

A step down to fmt 10 (10.2.1) should get you back to prior behavior

[earies]

With a recompiled spdlog (1.15.0) against fmt 11.1.2, quick look appears to point to formatter::format changes in fmt 11+

gabime/spdlog#3115 (comment)
fmtlib/fmt#3447
https://cplusplus.github.io/LWG/issue3636

[jayjwa]

I see. We just got fmt-11.1.1 Jan 10th. I'm sure the next version will come around soon. Until then I've robbed the old solib from the fmt 10 package.