Meson cannot find Cairo.

[wellinton-capixaba]

Hello. While trying to build the Epiphany, I end receiving the following error message when calling "meson .."

"Run-time dependency cairo found: NO (tried pkgconfig and cmake)"

"../meson.build:80:0: ERROR: Dependency "cairo" not found, tried pkgconfig and cmake"

I tried again, this time with:

PKG_CONFIG_PATH=/media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/ meson ..

To my surprise, it didn't work. The same error messages persisted.

Then I gave a look at meson-log.txt. Three lines there that might be useful are:

Determining dependency 'cairo' with pkg-config executable '/usr/bin/pkg-config'
env[PKG_CONFIG_PATH]: /media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/
Called /usr/bin/pkg-config --modversion cairo -> 1

There is a thread on Unix stack exchange that tells to use:

setenv PKG_CONFIG_PATH ${YOUR_PATH}/cairo/1.16.0/lib/pkgconfig

However, setenv this not work here, so I am open to suggestions as to solve it.

P.S:Also interest in know why: "PKG_CONFIG_PATH=/media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/ meson ." is not working, which seems absurd to me.

[eli-schwartz]

Clearly it does work to set the env because that's exactly what the log file says has successfully happened.

However it seems to me that you refer once to Cairo 1.16.0 and twice to Cairo 1.10.0, which version are you actually trying to use?

What's the exact file path of the file "cairo.pc"?

[wellinton-capixaba]

Actually, there is not Cairo 1.16, this is from the internet thread suggesting to use setenv

The file path to Cairo it is: /media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/

[eli-schwartz]

Well, then I think you need to re-check your assertions here. Because if that's the correct path to cairo.pc, then running pkg-config should find it.

What's the full contents of meson-log.txt? Not just 3 lines that you think might be useful -- the whole file. :)

[wellinton-capixaba]

The meson-log.txt content:

Build started at 2023-04-24T15:20:53.617193
Main binary: /usr/local/bin/python3
Build Options: 
Python system: Linux
The Meson build system
Version: 1.0.0
Source dir: /media/34GB/Arquivos-de-Programas-Linux/epiphany-40.0
Build dir: /media/34GB/Arquivos-de-Programas-Linux/epiphany-40.0/build
Build type: native build
Project name: epiphany
Project version: 40.0
-----
Detecting compiler via: cc --version
-----
Detecting compiler via: gcc --version
compiler returned <subprocess.Popen object at 0x7f755c92fd10>
compiler stdout:
gcc (GCC) 4.9.4
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


compiler stderr:

Running command: gcc -E -dM -
-----
Detecting linker via: gcc -Wl,--version
linker returned <subprocess.Popen object at 0x7f755c934810>
linker stdout:
GNU ld (GNU Binutils for Ubuntu) 2.20.1-system.20100303
Copyright 2009 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.

linker stderr:
collect2 version 4.9.4
/usr/bin/ld --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 /usr/lib/../lib64/crt1.o /usr/lib/../lib64/crti.o /media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/crtbegin.o -L/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4 -L/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/../../../../lib64 -L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib64 -L/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/../../.. --version -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/crtend.o /usr/lib/../lib64/crtn.o
 /usr/bin/nm -n /usr/lib/../lib64/crt1.o
 /usr/bin/nm -n /usr/lib/../lib64/crti.o
 /usr/bin/nm -n /media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/crtbegin.o
 /usr/bin/nm -n /media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/crtend.o
 /usr/bin/nm -n /usr/lib/../lib64/crtn.o

Sanity testing C compiler: gcc
Is cross compiler: False.
Sanity check compiler command line: gcc sanitycheckc.c -o sanitycheckc.exe -D_FILE_OFFSET_BITS=64
Sanity check compile stdout:

-----
Sanity check compile stderr:

-----
Running test binary command:  /media/34GB/Arquivos-de-Programas-Linux/epiphany-40.0/build/meson-private/sanitycheckc.exe
C compiler for the host machine: gcc (gcc 4.9.4 "gcc (GCC) 4.9.4")
C linker for the host machine: gcc ld.bfd 2.20.1-system
detecting CPU family based on trial='x86_64'
-----
Detecting compiler via: cc --version
-----
Detecting compiler via: gcc --version
compiler returned <subprocess.Popen object at 0x7f755c8f51d0>
compiler stdout:
gcc (GCC) 4.9.4
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.


compiler stderr:

Running command: gcc -E -dM -
-----
Detecting linker via: gcc -Wl,--version
linker returned <subprocess.Popen object at 0x7f755c8f5950>
linker stdout:
GNU ld (GNU Binutils for Ubuntu) 2.20.1-system.20100303
Copyright 2009 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.

linker stderr:
collect2 version 4.9.4
/usr/bin/ld --eh-frame-hdr -m elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2 /usr/lib/../lib64/crt1.o /usr/lib/../lib64/crti.o /media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/crtbegin.o -L/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4 -L/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/../../../../lib64 -L/lib/../lib64 -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib64 -L/media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/../../.. --version -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed /media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/crtend.o /usr/lib/../lib64/crtn.o
 /usr/bin/nm -n /usr/lib/../lib64/crt1.o
 /usr/bin/nm -n /usr/lib/../lib64/crti.o
 /usr/bin/nm -n /media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/crtbegin.o
 /usr/bin/nm -n /media/34GB/Arquivos-de-Programas-Linux/Gcc-4.9.4/lib/gcc/x86_64-linux-gnu/4.9.4/crtend.o
 /usr/bin/nm -n /usr/lib/../lib64/crtn.o

Sanity testing C compiler: gcc
Is cross compiler: False.
Sanity check compiler command line: gcc sanitycheckc.c -o sanitycheckc.exe -D_FILE_OFFSET_BITS=64
Sanity check compile stdout:

-----
Sanity check compile stderr:

-----
Running test binary command:  /media/34GB/Arquivos-de-Programas-Linux/epiphany-40.0/build/meson-private/sanitycheckc.exe
C compiler for the build machine: gcc (gcc 4.9.4 "gcc (GCC) 4.9.4")
C linker for the build machine: gcc ld.bfd 2.20.1-system
detecting CPU family based on trial='x86_64'
detecting CPU family based on trial='x86_64'
Build machine cpu family: x86_64
Build machine cpu: x86_64
Host machine cpu family: x86_64
Host machine cpu: x86_64
Target machine cpu family: x86_64
Target machine cpu: x86_64
WARNING: You should add the boolean check kwarg to the run_command call.
         It currently defaults to false,
         but it will default to true in future releases of meson.
         See also: https://github.com/mesonbuild/meson/issues/9300
Running command: /bin/grep -Po ^NAME=\K.* /etc/os-release
--- stdout ---

--- stderr ---
/bin/grep: /etc/os-release: No such file or directory


Pkg-config binary for 1 is not cached.
Pkg-config binary missing from cross or native file, or env var undefined.
Trying a default Pkg-config fallback at pkg-config
Found pkg-config: /usr/bin/pkg-config (0.22)
Determining dependency 'iso-codes' with pkg-config executable '/usr/bin/pkg-config'
env[PKG_CONFIG_PATH]: /media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/
Called `/usr/bin/pkg-config --modversion iso-codes` -> 0
3.12.1
env[PKG_CONFIG_PATH]: /media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/
Called `/usr/bin/pkg-config --cflags iso-codes` -> 0

env[PKG_CONFIG_PATH]: /media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/
env[PKG_CONFIG_ALLOW_SYSTEM_LIBS]: 1
Called `/usr/bin/pkg-config --libs iso-codes` -> 0

env[PKG_CONFIG_PATH]: /media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/
Called `/usr/bin/pkg-config --libs iso-codes` -> 0

Run-time dependency iso-codes found: YES 3.12.1
env[PKG_CONFIG_PATH]: /media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/
Called `/usr/bin/pkg-config --variable=prefix iso-codes` -> 0
/usr
Got pkgconfig variable prefix : /usr
Pkg-config binary for 1 is cached.
Determining dependency 'cairo' with pkg-config executable '/usr/bin/pkg-config'
env[PKG_CONFIG_PATH]: /media/34GB/Arquivos-de-Programas-Linux/Cairo-1.10.0/lib/pkgconfig/
Called `/usr/bin/pkg-config --modversion cairo` -> 1

CMake binary for 1 is not cached
CMake binary missing from cross or native file, or env var undefined.
Trying a default CMake fallback at cmake
Found CMake: /usr/local/bin/cmake (3.19.2)
Extracting basic cmake information
CMake Toolchain: Calling CMake once to generate the compiler state
Calling CMake (['/usr/local/bin/cmake']) in /media/34GB/Arquivos-de-Programas-Linux/epiphany-40.0/build/meson-private/__CMake_compiler_info__ with:
  - "--trace-expand"
  - "--trace-format=json-v1"
  - "--no-warn-unused-cli"
  - "--trace-redirect=cmake_trace.txt"
  - "-G"
  - "Ninja"
  - "-DCMAKE_TOOLCHAIN_FILE=/media/34GB/Arquivos-de-Programas-Linux/epiphany-40.0/build/meson-private/__CMake_compiler_info__/CMakeMesonTempToolchainFile.cmake"
  - "."
WARNING: CMake Toolchain: Failed to determine CMake compilers state
Try CMake generator: auto
Calling CMake (['/usr/local/bin/cmake']) in /media/34GB/Arquivos-de-Programas-Linux/epiphany-40.0/build/meson-private/cmake_cairo with:
  - "--trace-expand"
  - "--trace-format=json-v1"
  - "--no-warn-unused-cli"
  - "--trace-redirect=cmake_trace.txt"
  - "-DCMAKE_TOOLCHAIN_FILE=/media/34GB/Arquivos-de-Programas-Linux/epiphany-40.0/build/meson-private/cmake_cairo/CMakeMesonToolchainFile.cmake"
  - "."
  -- Module search paths:    ['/', '/media/34GB/Arquivos-de-Programas-Linux/Cmake-3.19.2-Linux-x86_64', '/opt', '/usr', '/usr/local']
  -- CMake root:             /media/34GB/Arquivos-de-Programas-Linux/Cmake-3.19.2-Linux-x86_64/share/cmake-3.19
  -- CMake architectures:    []
  -- CMake lib search paths: ['lib', 'lib32', 'lib64', 'libx32', 'share']
Preliminary CMake check failed. Aborting.
Run-time dependency cairo found: NO (tried pkgconfig and cmake)

../meson.build:80:0: ERROR: Dependency "cairo" not found, tried pkgconfig and cmake

[eli-schwartz]

Can you try that with meson 1.1.0 instead of 1.0.0, it has better logging in the later version.

[wellinton-capixaba]

Any ideas?

[wellinton-capixaba]

Ok, Meson 1.0.0 doesn't indicate the indirect dependencies. In my case there were a lot missing. It is absurd that it doesn't do so. Anyway, with 1.1.0 I was able to quickly pass all the missing dependencies, thanks for the help.

[eli-schwartz]

Well, there is a reason I felt it important to fix meson to add that logging in 1.1.0 :)

[eli-schwartz]

Anyways, yes, in general all meson can do is run pkg-config with the environment you give it. If you check the log file and set the same env manually then run the logged command, you should get the same results meson itself does.

Meson 1.1.0 exposes error messages from pkg-config in the log file, thankfully, so this became a lot easier to debug. You can still do it with a bit of work in older versions too, though.