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Date: Wed, 9 Sep 2026 17:02:59 -0300
From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Matt Turner <mattst88@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>, Ingo Molnar <mingo@redhat.com>,
	Namhyung Kim <namhyung@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Alexander Shishkin <alexander.shishkin@linux.intel.com>,
	Jiri Olsa <jolsa@kernel.org>, Ian Rogers <irogers@google.com>,
	Adrian Hunter <adrian.hunter@intel.com>,
	James Clark <james.clark@linaro.org>, linux-kernel@vger.kernel.org,
	linux-perf-users@vger.kernel.org
Subject: Re: [PATCH v8 0/3] perf tools: port UI from GTK2 to GTK4
Message-ID: <aqG7c7RkOoaxMo1w@x2>
References: <20260908-perf-gtk2-v8-0-e90d5d155f0d@gmail.com>
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 <aqFEdSZ40HkvipUr@x2>
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In-Reply-To: <aqFIkFzVvCQqnzpy@x2>

On Wed, Sep 09, 2026 at 08:52:48AM -0300, Arnaldo Carvalho de Melo wrote:
> On Wed, Sep 09, 2026 at 08:43:20AM -0300, Arnaldo Carvalho de Melo wrote:
> > On Wed, Sep 09, 2026 at 08:35:20AM -0300, Arnaldo Carvalho de Melo wrote:
> > Now, with GTK4=1 and trying to build the first patch after installing
> > gtk4-devel on fedora 43 it fails to detect gtk4 support:
> > 
> > ⬢ [acme@toolbx perf-tools-next]$ m
> > make: Entering directory '/home/acme/git/perf-tools-next/tools/perf'
> >   BUILD:   Doing 'make -j32' parallel build
> > 
> > Auto-detecting system features:
> > ...                                   libdw: [ on  ]
> > ...                                   glibc: [ on  ]
> > ...                                    gtk4: [ OFF ]


I removed gtk4 from FEATURES_DISPLAY, as it is opt-in, no point in
telling most of the time it is OFF, when developing one can use 'make
VF=1' to see if it was detected:

⬢ [acme@toolbx perf-tools-next]$ alias m='rm -rf ~/libexec/perf-core/ ; make VF=1 CORESIGHT=1 -k O=/tmp/build/$(basename $PWD)/ -C tools/perf install-bin && perf test import && cat /tmp/build/$(basename $PWD)/feature/test-all.make.output' ; export PYTHONPATH=/tmp/build/$(basename $PWD)/python
⬢ [acme@toolbx perf-tools-next]$ m
make: Entering directory '/home/acme/git/perf-tools-next/tools/perf'
  BUILD:   Doing 'make -j32' parallel build

Auto-detecting system features:
...                                   libdw: [ on  ]
...                                   glibc: [ on  ]
...                                  libelf: [ on  ]
...                                 libnuma: [ on  ]
...                  numa_num_possible_cpus: [ on  ]
...                               libpython: [ on  ]
...                             libcapstone: [ on  ]
...                               llvm-perf: [ on  ]
...                                    zlib: [ on  ]
...                                    lzma: [ on  ]
...                                     bpf: [ on  ]
...                                  libaio: [ on  ]
...                                 libzstd: [ on  ]
...                              libopenssl: [ on  ]
...                                    rust: [ on  ]
...                               backtrace: [ on  ]
...                                 eventfd: [ on  ]
...                          fortify-source: [ on  ]
...                                  gettid: [ on  ]
...                                  libbfd: [ on  ]
...                       libbfd-threadsafe: [ on  ]
...                       libelf-getphdrnum: [ on  ]
...                     libelf-gelf_getnote: [ on  ]
...                    libelf-getshdrstrndx: [ on  ]
...                             libelf-zstd: [ on  ]
...                                libslang: [ on  ]
...                           libtraceevent: [ on  ]
...                             libcpupower: [ on  ]
...             pthread-attr-setaffinity-np: [ on  ]
...                         pthread-barrier: [ on  ]
...                            reallocarray: [ on  ]
...                      stackprotector-all: [ on  ]
...                                 timerfd: [ on  ]
...                               scandirat: [ on  ]
...                            sched_getcpu: [ on  ]
...                                     sdt: [ on  ]
...                                   setns: [ on  ]
...                  disassembler-four-args: [ on  ]
...                disassembler-init-styled: [ on  ]
...                             file-handle: [ on  ]
...                                  bionic: [ OFF ]
...                              compile-32: [ OFF ]
...                             compile-x32: [ OFF ]
...                          cplus-demangle: [ OFF ]
...                            cxa-demangle: [ on  ]
...                                    gtk4: [ OFF ]
...                                   hello: [ OFF ]
...                  babeltrace2-ctf-writer: [ on  ]
...                             libcapstone: [ on  ]
...                                libcheck: [ OFF ]
...                          libbfd-liberty: [ OFF ]
...                        libbfd-liberty-z: [ OFF ]
...                              libopencsd: [ on  ]
...                                 libperl: [ OFF ]
...                                    llvm: [ OFF ]
...                                  libbpf: [ OFF ]
...                                 libpfm4: [ on  ]
...                           libdebuginfod: [ on  ]
...                         clang-bpf-co-re: [ on  ]
...                       bpftool-skeletons: [ OFF ]
...                               libunwind: [ OFF ]
...                   libunwind-debug-frame: [ OFF ]
...                       libunwind-aarch64: [ OFF ]
...           libunwind-debug-frame-aarch64: [ OFF ]
...                           libunwind-arm: [ OFF ]
...               libunwind-debug-frame-arm: [ OFF ]
...                   libunwind-loongarch64: [ OFF ]
...       libunwind-debug-frame-loongarch64: [ OFF ]
...                          libunwind-mips: [ OFF ]
...              libunwind-debug-frame-mips: [ OFF ]
...                         libunwind-ppc32: [ OFF ]
...             libunwind-debug-frame-ppc32: [ OFF ]
...                         libunwind-ppc64: [ OFF ]
...             libunwind-debug-frame-ppc64: [ OFF ]
...                         libunwind-riscv: [ OFF ]
...             libunwind-debug-frame-riscv: [ OFF ]
...                         libunwind-s390x: [ OFF ]
...             libunwind-debug-frame-s390x: [ OFF ]
...                           libunwind-x86: [ OFF ]
...               libunwind-debug-frame-x86: [ OFF ]
...                        libunwind-x86_64: [ OFF ]
...            libunwind-debug-frame-x86_64: [ OFF ]
...                                  prefix: /home/acme
...                                  bindir: /home/acme/bin
...                                  libdir: /home/acme/lib64
...                              sysconfdir: /home/acme/etc
...                           LIBUNWIND_DIR:
...                               LIBDW_DIR:
...                                    JDIR: /usr/lib/jvm/java-latest-openjdk
...               DWARF post unwind library: libdw


- Arnaldo