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# Copyright The OpenTelemetry Authors
# SPDX-License-Identifier: Apache-2.0
# Unlike functions, macros do not introduce a scope. This is an advantage when
# trying to set global variables, as we do here.
macro (opentelemetry_set_pkgconfig_paths)
if (IS_ABSOLUTE "${CMAKE_INSTALL_LIBDIR}")
set(OPENTELEMETRY_PC_LIBDIR "${CMAKE_INSTALL_LIBDIR}")
else ()
set(OPENTELEMETRY_PC_LIBDIR
"\${exec_prefix}/${CMAKE_INSTALL_LIBDIR}")
endif ()
if (IS_ABSOLUTE "${CMAKE_INSTALL_INCLUDEDIR}")
set(OPENTELEMETRY_PC_INCLUDEDIR "${CMAKE_INSTALL_INCLUDEDIR}")
else ()
set(OPENTELEMETRY_PC_INCLUDEDIR
"\${prefix}/${CMAKE_INSTALL_INCLUDEDIR}")
endif ()
endmacro ()
# Create the pkgconfig configuration file (aka *.pc files) and the rules to install it.
#
# * library: the short name of the target, such as `api` or `resources`.
# * name: the displayed name of the library, such as "OpenTelemetry API".
# * description: the description of the library.
# * ARGN: the names of any pkgconfig modules the generated module depends on.
#
function (opentelemetry_add_pkgconfig library name description)
opentelemetry_set_pkgconfig_paths()
set(target "opentelemetry_${library}")
set(OPENTELEMETRY_PC_NAME "${name}")
set(OPENTELEMETRY_PC_DESCRIPTION ${description})
string(JOIN " " OPENTELEMETRY_PC_REQUIRES ${ARGN})
get_target_property(target_type ${target} TYPE)
if ("${target_type}" STREQUAL "INTERFACE_LIBRARY")
# Interface libraries only contain headers. They do not generate lib files
# to link against with `-l`.
set(OPENTELEMETRY_PC_LIBS "")
else ()
set(OPENTELEMETRY_PC_LIBS "-l${target}")
endif ()
get_target_property(target_defs ${target} INTERFACE_COMPILE_DEFINITIONS)
if (target_defs)
foreach (def ${target_defs})
string(APPEND OPENTELEMETRY_PC_CFLAGS " -D${def}")
endforeach ()
endif ()
# Create and install the pkg-config files.
configure_file("${PROJECT_SOURCE_DIR}/cmake/templates/config.pc.in" "${target}.pc" @ONLY)
install(
FILES "${CMAKE_CURRENT_BINARY_DIR}/${target}.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
endfunction()
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