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CMake: Add support for CMAKE_LTO option.

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This enables Link Time Optimization. LTO is a proven technique for
optimizing across compilation units.

Closes #4799
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Tobias Hieta 2020-01-09 12:10:55 +01:00 • committed by Daniel Stenberg
parent f128c00a99
commit 4ccf7622db
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3 changed files with 30 additions and 0 deletions
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6
lib/CMakeLists.txt
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@ -96,6 +96,12 @@ endif()
set_target_properties(${LIB_NAME} PROPERTIES PREFIX "")
set_target_properties(${LIB_NAME} PROPERTIES IMPORT_PREFIX "")
if(CURL_HAS_LTO)
set_target_properties(${LIB_NAME} PROPERTIES
INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE
INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO TRUE)
endif()
if(WIN32)
if(BUILD_SHARED_LIBS)
# Add "_imp" as a suffix before the extension to avoid conflicting with the statically linked "libcurl.lib"