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author | Sergey Sharybin <sergey.vfx@gmail.com> | 2017-04-21 15:26:25 +0300 |
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committer | Sergey Sharybin <sergey.vfx@gmail.com> | 2017-04-21 15:36:34 +0300 |
commit | e4ab70da862b5852a6e3f7bab489bed8c3b18193 (patch) | |
tree | 065e30e1411348dc868fef3621c235e95a651d8d /build_files/cmake/Modules/FindGlog.cmake | |
parent | 9c02990ac13a25968d8ec15da15129617d3f25d0 (diff) |
CMake: Add option to build against system-wide Glog
Similar to previous commit for Gflags.
Diffstat (limited to 'build_files/cmake/Modules/FindGlog.cmake')
-rw-r--r-- | build_files/cmake/Modules/FindGlog.cmake | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/build_files/cmake/Modules/FindGlog.cmake b/build_files/cmake/Modules/FindGlog.cmake new file mode 100644 index 00000000000..66c2aab2762 --- /dev/null +++ b/build_files/cmake/Modules/FindGlog.cmake @@ -0,0 +1,226 @@ +# Ceres Solver - A fast non-linear least squares minimizer +# Copyright 2015 Google Inc. All rights reserved. +# http://ceres-solver.org/ +# +# Redistribution and use in source and binary forms, with or without +# modification, are permitted provided that the following conditions are met: +# +# * Redistributions of source code must retain the above copyright notice, +# this list of conditions and the following disclaimer. +# * Redistributions in binary form must reproduce the above copyright notice, +# this list of conditions and the following disclaimer in the documentation +# and/or other materials provided with the distribution. +# * Neither the name of Google Inc. nor the names of its contributors may be +# used to endorse or promote products derived from this software without +# specific prior written permission. +# +# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" +# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE +# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR +# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF +# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS +# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN +# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) +# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +# POSSIBILITY OF SUCH DAMAGE. +# +# Author: alexs.mac@gmail.com (Alex Stewart) +# + +# FindGlog.cmake - Find Google glog logging library. +# +# This module defines the following variables: +# +# GLOG_FOUND: TRUE iff glog is found. +# GLOG_INCLUDE_DIRS: Include directories for glog. +# GLOG_LIBRARIES: Libraries required to link glog. +# +# The following variables control the behaviour of this module: +# +# GLOG_INCLUDE_DIR_HINTS: List of additional directories in which to +# search for glog includes, e.g: /timbuktu/include. +# GLOG_LIBRARY_DIR_HINTS: List of additional directories in which to +# search for glog libraries, e.g: /timbuktu/lib. +# GFLOG_ROOT_DIR, The base directory to search for Glog. +# This can also be an environment variable. +# +# The following variables are also defined by this module, but in line with +# CMake recommended FindPackage() module style should NOT be referenced directly +# by callers (use the plural variables detailed above instead). These variables +# do however affect the behaviour of the module via FIND_[PATH/LIBRARY]() which +# are NOT re-called (i.e. search for library is not repeated) if these variables +# are set with valid values _in the CMake cache_. This means that if these +# variables are set directly in the cache, either by the user in the CMake GUI, +# or by the user passing -DVAR=VALUE directives to CMake when called (which +# explicitly defines a cache variable), then they will be used verbatim, +# bypassing the HINTS variables and other hard-coded search locations. +# +# GLOG_INCLUDE_DIR: Include directory for glog, not including the +# include directory of any dependencies. +# GLOG_LIBRARY: glog library, not including the libraries of any +# dependencies. + +# If GLOG_ROOT_DIR was defined in the environment, use it. +if(NOT GLOG_ROOT_DIR AND NOT $ENV{GLOG_ROOT_DIR} STREQUAL "") + set(GLOG_ROOT_DIR $ENV{GLOG_ROOT_DIR}) +endif() + +if(DEFINED GLOG_ROOT_DIR) + set(GLOG_ROOT_DIR_INCLUDE "${GLOG_ROOT_DIR}/include") + set(GLOG_ROOT_DIR_LIB "${GLOG_ROOT_DIR}/lib") +endif() + +# Reset CALLERS_CMAKE_FIND_LIBRARY_PREFIXES to its value when +# FindGlog was invoked. +macro(GLOG_RESET_FIND_LIBRARY_PREFIX) + if(MSVC) + set(CMAKE_FIND_LIBRARY_PREFIXES "${CALLERS_CMAKE_FIND_LIBRARY_PREFIXES}") + endif() +endmacro() + +# Called if we failed to find glog or any of it's required dependencies, +# unsets all public (designed to be used externally) variables and reports +# error message at priority depending upon [REQUIRED/QUIET/<NONE>] argument. +macro(GLOG_REPORT_NOT_FOUND REASON_MSG) + unset(GLOG_FOUND) + unset(GLOG_INCLUDE_DIRS) + unset(GLOG_LIBRARIES) + # Make results of search visible in the CMake GUI if glog has not + # been found so that user does not have to toggle to advanced view. + mark_as_advanced(CLEAR GLOG_INCLUDE_DIR + GLOG_LIBRARY) + + glog_reset_find_library_prefix() + + # Note <package>_FIND_[REQUIRED/QUIETLY] variables defined by FindPackage() + # use the camelcase library name, not uppercase. + if(Glog_FIND_QUIETLY) + message(STATUS "Failed to find glog - " ${REASON_MSG} ${ARGN}) + elseif(Glog_FIND_REQUIRED) + message(FATAL_ERROR "Failed to find glog - " ${REASON_MSG} ${ARGN}) + else() + # Neither QUIETLY nor REQUIRED, use no priority which emits a message + # but continues configuration and allows generation. + message("-- Failed to find glog - " ${REASON_MSG} ${ARGN}) + endif() + return() +endmacro() + +# Handle possible presence of lib prefix for libraries on MSVC, see +# also GLOG_RESET_FIND_LIBRARY_PREFIX(). +if(MSVC) + # Preserve the caller's original values for CMAKE_FIND_LIBRARY_PREFIXES + # s/t we can set it back before returning. + set(CALLERS_CMAKE_FIND_LIBRARY_PREFIXES "${CMAKE_FIND_LIBRARY_PREFIXES}") + # The empty string in this list is important, it represents the case when + # the libraries have no prefix (shared libraries / DLLs). + set(CMAKE_FIND_LIBRARY_PREFIXES "lib" "" "${CMAKE_FIND_LIBRARY_PREFIXES}") +endif() + +# Search user-installed locations first, so that we prefer user installs +# to system installs where both exist. +list(APPEND GLOG_CHECK_INCLUDE_DIRS + ${GLOG_ROOT_DIR_INCLUDE} + /usr/local/include + /usr/local/homebrew/include # Mac OS X + /opt/local/var/macports/software # Mac OS X. + /opt/local/include + /usr/include + /sw/include # Fink + /opt/csw/include # Blastwave + /opt/lib/glog/include) +# Windows (for C:/Program Files prefix). +list(APPEND GLOG_CHECK_PATH_SUFFIXES + glog/include + glog/Include + Glog/include + Glog/Include) + +list(APPEND GLOG_CHECK_LIBRARY_DIRS + ${GLOG_ROOT_DIR_LIB} + /usr/local/lib + /usr/local/homebrew/lib # Mac OS X. + /opt/local/lib + /usr/lib + /sw/lib # Fink + /opt/csw/lib # Blastwave + /opt/lib/gflags/lib) +# Windows (for C:/Program Files prefix). +list(APPEND GLOG_CHECK_LIBRARY_SUFFIXES + glog/lib + glog/Lib + Glog/lib + Glog/Lib) + +# Search supplied hint directories first if supplied. +find_path(GLOG_INCLUDE_DIR + NAMES glog/logging.h + PATHS ${GLOG_INCLUDE_DIR_HINTS} + ${GLOG_CHECK_INCLUDE_DIRS} + PATH_SUFFIXES ${GLOG_CHECK_PATH_SUFFIXES}) +if(NOT GLOG_INCLUDE_DIR OR + NOT EXISTS ${GLOG_INCLUDE_DIR}) + glog_report_not_found( + "Could not find glog include directory, set GLOG_INCLUDE_DIR " + "to directory containing glog/logging.h") +endif() + +find_library(GLOG_LIBRARY NAMES glog + PATHS ${GLOG_LIBRARY_DIR_HINTS} + ${GLOG_CHECK_LIBRARY_DIRS} + PATH_SUFFIXES ${GLOG_CHECK_LIBRARY_SUFFIXES}) +if(NOT GLOG_LIBRARY OR + NOT EXISTS ${GLOG_LIBRARY}) + glog_report_not_found( + "Could not find glog library, set GLOG_LIBRARY " + "to full path to libglog.") +endif() + +# Mark internally as found, then verify. GLOG_REPORT_NOT_FOUND() unsets +# if called. +set(GLOG_FOUND TRUE) + +# Glog does not seem to provide any record of the version in its +# source tree, thus cannot extract version. + +# Catch case when caller has set GLOG_INCLUDE_DIR in the cache / GUI and +# thus FIND_[PATH/LIBRARY] are not called, but specified locations are +# invalid, otherwise we would report the library as found. +if(GLOG_INCLUDE_DIR AND + NOT EXISTS ${GLOG_INCLUDE_DIR}/glog/logging.h) + glog_report_not_found( + "Caller defined GLOG_INCLUDE_DIR:" + " ${GLOG_INCLUDE_DIR} does not contain glog/logging.h header.") +endif() +# TODO: This regex for glog library is pretty primitive, we use lowercase +# for comparison to handle Windows using CamelCase library names, could +# this check be better? +string(TOLOWER "${GLOG_LIBRARY}" LOWERCASE_GLOG_LIBRARY) +if(GLOG_LIBRARY AND + NOT "${LOWERCASE_GLOG_LIBRARY}" MATCHES ".*glog[^/]*") + glog_report_not_found( + "Caller defined GLOG_LIBRARY: " + "${GLOG_LIBRARY} does not match glog.") +endif() + +# Set standard CMake FindPackage variables if found. +if(GLOG_FOUND) + set(GLOG_INCLUDE_DIRS ${GLOG_INCLUDE_DIR}) + set(GLOG_LIBRARIES ${GLOG_LIBRARY}) +endif() + +glog_reset_find_library_prefix() + +# Handle REQUIRED / QUIET optional arguments. +include(FindPackageHandleStandardArgs) +find_package_handle_standard_args(GLOG DEFAULT_MSG + GLOG_INCLUDE_DIRS GLOG_LIBRARIES) + +# Only mark internal variables as advanced if we found glog, otherwise +# leave them visible in the standard GUI for the user to set manually. +if(GLOG_FOUND) + mark_as_advanced(FORCE GLOG_INCLUDE_DIR + GLOG_LIBRARY) +endif() |