Add Brotli Cmake support (#584)

Had to create a custom FindBrotli package, as not all users have
PkgConfig installed (which Brotli uses). This file gets installed
alongside httplibConfig.cmake for the end-users convenience.

Set BROTLI_USE_STATIC_LIBS to ON if you want to find the static libs
instead of default shared.

Adds the HTTPLIB_REQUIRE_BROTLI (default off) and HTTPLIB_USE_BROTLI_IF_AVAILABLE
(default on) options, which work in the same manner as the other optional/required
dependency options.

Moved the scattered linking and definitions to a single call.

Updated some documentation about the new options.

Improved the in-tree support by setting the HTTPLIB_IS_USING_XYZ
variables in the main CMakeLists (as well as having them in the
httplibConfig.cmake file).

Fixes #582
This commit is contained in:
KTGH 2020-07-28 17:04:29 -04:00 committed by GitHub
parent 6cce7951fc
commit 342c3ab293
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GPG key ID: 4AEE18F83AFDEB23
3 changed files with 247 additions and 27 deletions

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@ -6,6 +6,7 @@
set(HTTPLIB_IS_USING_OPENSSL @HTTPLIB_IS_USING_OPENSSL@)
set(HTTPLIB_IS_USING_ZLIB @HTTPLIB_IS_USING_ZLIB@)
set(HTTPLIB_IS_COMPILED @HTTPLIB_COMPILE@)
set(HTTPLIB_IS_USING_BROTLI @HTTPLIB_IS_USING_BROTLI@)
set(HTTPLIB_VERSION @PROJECT_VERSION@)
include(CMakeFindDependencyMacro)
@ -26,6 +27,14 @@ if(@HTTPLIB_IS_USING_ZLIB@)
find_dependency(ZLIB REQUIRED)
endif()
if(@HTTPLIB_IS_USING_BROTLI@)
# Needed so we can use our own FindBrotli.cmake in this file.
# Note that the FindBrotli.cmake file is installed in the same dir as this file.
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
set(BROTLI_USE_STATIC_LIBS @BROTLI_USE_STATIC_LIBS@)
find_dependency(Brotli COMPONENTS common encoder decoder REQUIRED)
endif()
# Mildly useful for end-users
# Not really recommended to be used though
set_and_check(HTTPLIB_INCLUDE_DIR "@PACKAGE_CMAKE_INSTALL_FULL_INCLUDEDIR@")