Commit a3f71349 authored by Sébastien GALLOU's avatar Sébastien GALLOU Committed by Brad King

FindProtobuf: Add option to find static libraries on UNIX

Add a `Protobuf_USE_STATIC_LIBS` input variable to optionally restrict
searches to static library names.  This follows the approach of
`FindBoost`.
parent fddc01ba
FindProtobuf-static-libs
------------------------
* The :module:`FindProtobuf` module now supports usage of static libraries
for Unix via a new ``Protobuf_USE_STATIC_LIBS`` input variable.
......@@ -20,6 +20,9 @@
# imported .proto files.
# ``Protobuf_DEBUG``
# Show debug messages.
# ``Protobuf_USE_STATIC_LIBS``
# Set to ON to force the use of the static libraries.
# Default is OFF.
#
# Defines the following variables:
#
......@@ -218,6 +221,14 @@ function(PROTOBUF_GENERATE_PYTHON SRCS)
set(${SRCS} ${${SRCS}} PARENT_SCOPE)
endfunction()
if(Protobuf_DEBUG)
# Output some of their choices
message(STATUS "[ ${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} ] "
"Protobuf_USE_STATIC_LIBS = ${Protobuf_USE_STATIC_LIBS}")
endif()
# Backwards compatibility
# Define camel case versions of input variables
foreach(UPPER
......@@ -245,6 +256,17 @@ if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(_PROTOBUF_ARCH_DIR x64/)
endif()
# Support preference of static libs by adjusting CMAKE_FIND_LIBRARY_SUFFIXES
if( Protobuf_USE_STATIC_LIBS )
set( _protobuf_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
if(WIN32)
set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
else()
set(CMAKE_FIND_LIBRARY_SUFFIXES .a )
endif()
endif()
include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
# Internal function: search for normal library as well as a debug one
......@@ -399,6 +421,11 @@ if(Protobuf_FOUND)
set(Protobuf_INCLUDE_DIRS ${Protobuf_INCLUDE_DIR})
endif()
# Restore the original find library ordering
if( Protobuf_USE_STATIC_LIBS )
set(CMAKE_FIND_LIBRARY_SUFFIXES ${_protobuf_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
endif()
# Backwards compatibility
# Define upper case versions of output variables
foreach(Camel
......
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