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Add shared library support and fix library install path on Linux #815

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Add shared library support and fix library install path on Linux #815

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afe0104
Use GNUInstallDirs module
musicinmybrain Aug 27, 2022
2a1d339
Add a build_shared_lib option (fix #484)
musicinmybrain Aug 27, 2022
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6 changes: 6 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,5 +1,11 @@
# Change Log

## [Unreleased]
### Features
* Add a build_shared_library CMake option
### Bug Fixes
* Fix library installation path on Linux distributions that use lib64

## [9.97.0] - 25-12-2020
### Features
* Support for QNX OS
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35 changes: 28 additions & 7 deletions CMakeLists.txt
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Expand Up @@ -23,15 +23,18 @@ endmacro()

option(test "Build all tests" OFF)
option(build_static_lib "Build easyloggingpp as a static library" OFF)
option(build_shared_lib "Build easyloggingpp as a shared library" OFF)
option(lib_utc_datetime "Build library with UTC date/time logging" OFF)

set(ELPP_MAJOR_VERSION "9")
set(ELPP_MINOR_VERSION "96")
set(ELPP_PATCH_VERSION "7")
set(ELPP_VERSION_STRING "${ELPP_MAJOR_VERSION}.${ELPP_MINOR_VERSION}.${ELPP_PATCH_VERSION}")

set(ELPP_INCLUDE_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "The directory the headers are installed in")
set(ELPP_PKGCONFIG_INSTALL_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files")
include(GNUInstallDirs)

set(ELPP_INCLUDE_INSTALL_DIR "${CMAKE_INSTALL_INCLUDEDIR}" CACHE PATH "The directory the headers are installed in")
set(ELPP_PKGCONFIG_INSTALL_DIR "${CMAKE_INSTALL_DATAROOTDIR}/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files")

include_directories(${CMAKE_CURRENT_SOURCE_DIR}/include)

Expand All @@ -52,18 +55,36 @@ if (HAVE_EXECINFO)
add_definitions(-DHAVE_EXECINFO)
endif()

if (build_static_lib)
if (build_shared_lib OR build_shared_lib)
if (lib_utc_datetime)
add_definitions(-DELPP_UTC_DATETIME)
endif()

require_cpp11()
add_library(easyloggingpp STATIC src/easylogging++.cc)
set_property(TARGET easyloggingpp PROPERTY POSITION_INDEPENDENT_CODE ON)
endif()

if (build_static_lib)
add_library(easyloggingpp_static STATIC src/easylogging++.cc)
set_target_properties(easyloggingpp_static PROPERTIES
OUTPUT_NAME easyloggingpp
POSITION_INDEPENDENT_CODE ON)
set_property(TARGET easyloggingpp_static PROPERTY POSITION_INDEPENDENT_CODE ON)

install(TARGETS
easyloggingpp_static
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif()
if (build_shared_lib)
add_library(easyloggingpp_shared SHARED src/easylogging++.cc)
set_target_properties(easyloggingpp_shared PROPERTIES
OUTPUT_NAME easyloggingpp
POSITION_INDEPENDENT_CODE ON
SOVERSION "${ELPP_MAJOR_VERSION}"
VERSION "${ELPP_MAJOR_VERSION}.${ELPP_MINOR_VERSION}.${ELPP_PATCH_VERSION}")

install(TARGETS
easyloggingpp
ARCHIVE DESTINATION lib)
easyloggingpp_shared
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif()

export(PACKAGE ${PROJECT_NAME})
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1 change: 1 addition & 0 deletions README.md
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Expand Up @@ -192,6 +192,7 @@ Following options are supported by Easylogging++ cmake and you can turn these op

* `lib_utc_datetime` - Defines `ELPP_UTC_DATETIME`
* `build_static_lib` - Builds static library for Easylogging++
* `build_shared_lib` - Builds shared library for Easylogging++

With that said, you will still need `easylogging++.cc` file in order to compile. For header only, please check [v9.89](https://github.com/amrayn/easyloggingpp/releases/tag/9.89) and lower.

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