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Genex-LINK_GROUP: Add support feature RESCAN on BSD systems

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This commit is contained in:
Marc Chevrier
2022-03-15 15:30:57 +01:00
parent e4039a8e34
commit d658332782
5 changed files with 22 additions and 7 deletions
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5
Help/release/dev/rescan-static-libraries.rst
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@@ -1,5 +1,6 @@
rescan-static-libraries
-----------------------
* The :genex:`LINK_GROUP` generator expression gained the ability to manage
circular references between static libraries by using ``RESCAN`` feature.
* The :genex:`LINK_GROUP` generator expression gained the ability to manage, on
``Linux`` and ``BSD`` systems, circular references between static libraries
by using ``RESCAN`` feature.

8
Help/variable/LINK_GROUP_PREDEFINED_FEATURES.txt
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@@ -15,8 +15,8 @@ static libraries, the following feature can be used:
``-z rescan-start`` and ``-z rescan-end``).
Using this feature has a significant performance cost. It is best to use it
only when there are unavoidable circular references between two or more static
libraries.
only when there are unavoidable circular references between two or more
static libraries.
This feature is available on ``Linux`` and ``SunOS`` platforms as well as
``Windows`` when ``GNU`` toolchain is used.
This feature is available on ``Linux``, ``BSD``, and ``SunOS`` target
platforms as well as ``Windows`` when ``GNU`` toolchain is used.

7
Modules/Platform/FreeBSD.cmake
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@@ -53,4 +53,11 @@ endif()
set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE_SUPPORTED TRUE)
# Features for LINK_GROUP generator expression
## RESCAN: request the linker to rescan static libraries until there is
## no pending undefined symbols
set(CMAKE_LINK_GROUP_USING_RESCAN "LINKER:--start-group" "LINKER:--end-group")
set(CMAKE_LINK_GROUP_USING_RESCAN_SUPPORTED TRUE)
include(Platform/UnixPaths)

7
Modules/Platform/NetBSD.cmake
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@@ -39,4 +39,11 @@ endif()
set(CMAKE_LINK_LIBRARY_USING_WHOLE_ARCHIVE_SUPPORTED TRUE)
# Features for LINK_GROUP generator expression
## RESCAN: request the linker to rescan static libraries until there is
## no pending undefined symbols
set(CMAKE_LINK_GROUP_USING_RESCAN "LINKER:--start-group" "LINKER:--end-group")
set(CMAKE_LINK_GROUP_USING_RESCAN_SUPPORTED TRUE)
include(Platform/UnixPaths)

2
Tests/RunCMake/target_link_libraries-LINK_GROUP/RunCMakeTest.cmake
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@@ -63,7 +63,7 @@ if ((RunCMake_GENERATOR MATCHES "Makefiles|Ninja|Xcode"
endif()
# Feature RESCAN
if (CMAKE_SYSTEM_NAME STREQUAL "Linux"
if (CMAKE_SYSTEM_NAME MATCHES "Linux|BSD"
OR (CMAKE_SYSTEM_NAME STREQUAL "SunOS" AND (NOT CMAKE_C_COMPILER_ID STREQUAL "SunPro" OR CMAKE_C_COMPILER_VERSION VERSION_GREATER "5.9"))
OR (WIN32 AND CMAKE_C_COMPILER_ID STREQUAL "GNU"))
run_cmake(rescan)