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cmake: allow SHARE_LIB_OBJECT=ON on all platforms

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2ebc74c36a #11546 introduced sharing
libcurl objects for shared and static targets.

The above automatically enabled for Windows builds, with an option to
disable with `SHARE_LIB_OBJECT=OFF`.

This patch extend this feature to all platforms as a manual option.
You can enable it by setting `SHARE_LIB_OBJECT=ON`. Then shared objects
are built in PIC mode, meaning the static lib will also have PIC code.

[EXPERIMENTAL]

Closes #11627
This commit is contained in:
Viktor Szakats 2023-08-08 11:45:26 +00:00
parent fb722ec7e5
commit fc9bfb1452
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GPG Key ID: B5ABD165E2AEF201
1 changed files with 14 additions and 8 deletions
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22
lib/CMakeLists.txt
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@ -108,13 +108,18 @@ if(WIN32 AND
set(IMPORT_LIB_SUFFIX "_imp")
endif()
# On supported platforms, do a single compilation pass for libcurl sources
# and reuse these objects to generate both static and shared target.
# This is possible where PIC is the default for both shared and static and
# there is a way to tell the linker which libcurl symbols it should export
# (vs. marking these symbols exportable at compile-time).
if(WIN32 AND NOT DEFINED SHARE_LIB_OBJECT)
set(SHARE_LIB_OBJECT ON)
# Whether to do a single compilation pass for libcurl sources and reuse these
# objects to generate both static and shared target.
if(NOT DEFINED SHARE_LIB_OBJECT)
# Enable it by default on platforms where PIC is the default for both shared
# and static and there is a way to tell the linker which libcurl symbols it
# should export (vs. marking these symbols exportable at compile-time).
if(WIN32)
set(SHARE_LIB_OBJECT ON)
else()
# On other platforms, make it an option disabled by default
set(SHARE_LIB_OBJECT OFF)
endif()
endif()
if(SHARE_LIB_OBJECT)
@ -123,7 +128,8 @@ if(SHARE_LIB_OBJECT)
target_link_libraries(${LIB_OBJECT} PRIVATE ${CURL_LIBS})
set_target_properties(${LIB_OBJECT} PROPERTIES
COMPILE_DEFINITIONS "BUILDING_LIBCURL"
INTERFACE_COMPILE_DEFINITIONS "CURL_STATICLIB")
INTERFACE_COMPILE_DEFINITIONS "CURL_STATICLIB"
POSITION_INDEPENDENT_CODE ON)
if(HIDES_CURL_PRIVATE_SYMBOLS)
set_target_properties(${LIB_OBJECT} PROPERTIES
COMPILE_DEFINITIONS "CURL_HIDDEN_SYMBOLS"