Cap'n Proto's Autotools-installed package config forwards the QUIET option to its internal find_package(PkgConfig) call and, when QUIET is given, suppresses its own diagnostics. As a result, a missing PkgConfig (for example, with the system capnproto package on NetBSD) was indistinguishable from capnproto itself being absent:
$ cmake -B build
-- The CXX compiler identification is GNU 12.5.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
CMake Error at CMakeLists.txt:18 (message):
Cap'n Proto is required but was not found.
To resolve, choose one of the following:
- Install Cap'n Proto (version 1.0+ recommended)
- For Bitcoin Core compilation build with -DENABLE_IPC=OFF to disable multiprocess support
-- Configuring incomplete, errors occurred!
$ sudo pkgin install capnproto
Password:
calculating dependencies...done.
1 package to install:
capnproto-1.4.0
0 to remove, 0 to refresh, 0 to upgrade, 1 to install
2652K to download, 21M of additional disk space will be used
proceed ? [Y/n] y
[1/1] capnproto-1.4.0.tgz 100% 2652KB 2.6MB/s 00:01
[1/1] installing capnproto-1.4.0...
pkg_install warnings: 0, errors: 0
reading local summary...
processing local summary...
$ cmake -B build --fresh
-- The CXX compiler identification is GNU 12.5.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
CMake Error at CMakeLists.txt:18 (message):
Cap'n Proto is required but was not found.
To resolve, choose one of the following:
- Install Cap'n Proto (version 1.0+ recommended)
- For Bitcoin Core compilation build with -DENABLE_IPC=OFF to disable multiprocess support
-- Configuring incomplete, errors occurred!
Without QUIET, the actual cause can be diagnosed:
$ cmake -B build --fresh
-- The CXX compiler identification is GNU 12.5.0
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD
-- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Failed
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE
-- Could NOT find PkgConfig (missing: PKG_CONFIG_EXECUTABLE)
CMake Warning at /usr/pkg/lib/cmake/CapnProto/CapnProtoTargets.cmake:40 (message):
pkg-config cannot be found
Call Stack (most recent call first):
/usr/pkg/lib/cmake/CapnProto/CapnProtoConfig.cmake:102 (include)
CMakeLists.txt:16 (find_package)
CMake Warning at CMakeLists.txt:16 (find_package):
Found package configuration file:
/usr/pkg/lib/cmake/CapnProto/CapnProtoConfig.cmake
but it set CapnProto_FOUND to FALSE so package "CapnProto" is considered to
be NOT FOUND.
CMake Error at CMakeLists.txt:18 (message):
Cap'n Proto is required but was not found.
To resolve, choose one of the following:
- Install Cap'n Proto (version 1.0+ recommended)
- For Bitcoin Core compilation build with -DENABLE_IPC=OFF to disable multiprocess support
-- Configuring incomplete, errors occurred!
