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Merge pull request #457 from xfxyjwf/cmake
Add cmake support.
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cmake_minimum_required(VERSION 2.8) | ||
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project(protobuf C CXX) | ||
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option(BUILD_TESTING "Build tests" ON) | ||
option(BUILD_SHARED_LIBS "Build Shared Libraries" OFF) | ||
if (MSVC) | ||
option(ZLIB "Build with zlib support" OFF) | ||
endif (MSVC) | ||
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find_package(Threads REQUIRED) | ||
if (CMAKE_USE_PTHREADS_INIT) | ||
set(HAVE_PTHREAD 1) | ||
else (CMAKE_USE_PTHREADS_INIT) | ||
set(HAVE_PTHREAD 0) | ||
endif (CMAKE_USE_PTHREADS_INIT) | ||
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if (MSVC) | ||
if (ZLIB) | ||
set(HAVE_ZLIB 1) | ||
find_path(ZLIB_INCLUDE_DIRECTORIES zlib.h ${protobuf_SOURCE_DIR}) | ||
find_library(ZLIB_LIBRARIES zdll ${protobuf_SOURCE_DIR}) | ||
else (ZLIB) | ||
set(HAVE_ZLIB 0) | ||
endif (ZLIB) | ||
else (MSVC) | ||
find_package(ZLIB) | ||
if (ZLIB_FOUND) | ||
set(HAVE_ZLIB 1) | ||
else (ZLIB_FOUND) | ||
set(HAVE_ZLIB 0) | ||
# Explicitly set these to empty (override NOT_FOUND) so cmake doesn't | ||
# complain when we use them later. | ||
set(ZLIB_INCLUDE_DIRECTORIES) | ||
set(ZLIB_LIBRARIES) | ||
endif (ZLIB_FOUND) | ||
endif (MSVC) | ||
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if (MSVC) | ||
if (BUILD_SHARED_LIBS) | ||
add_definitions(-DPROTOBUF_USE_DLLS) | ||
endif (BUILD_SHARED_LIBS) | ||
add_definitions(/wd4244 /wd4267 /wd4018 /wd4355 /wd4800 /wd4251 /wd4996 /wd4146 /wd4305) | ||
endif (MSVC) | ||
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include(find_hash_map.cmake) | ||
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configure_file(config.h.in config.h) | ||
configure_file(pbconfig.h.in google/protobuf/stubs/pbconfig.h) | ||
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get_filename_component(protobuf_source_dir ${protobuf_SOURCE_DIR} PATH) | ||
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include_directories( | ||
${ZLIB_INCLUDE_DIRECTORIES} | ||
${protobuf_BINARY_DIR} | ||
${protobuf_source_dir}/src) | ||
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if (MSVC) | ||
# Add the "lib" prefix for generated .lib outputs. | ||
set(LIB_PREFIX lib) | ||
else (MSVC) | ||
# When building with "make", "lib" prefix will be added automatically by | ||
# the build tool. | ||
set(LIB_PREFIX) | ||
endif (MSVC) | ||
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include(libprotobuf-lite.cmake) | ||
include(libprotobuf.cmake) | ||
include(libprotoc.cmake) | ||
if (BUILD_TESTING) | ||
include(protoc.cmake) | ||
endif (BUILD_TESTING) |
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This directory contains cmake files that can be used to generate MSVC project | ||
files in order to build protobuf on windows. You need to have cmake installed | ||
on your computer before proceeding. | ||
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Compiling and Installing | ||
======================== | ||
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1. Check whether a gtest directory exists in the upper level directory. If | ||
you checkout the code from github via "git clone", this gtest directory | ||
won't exist and you won't be able to build the tests described below. To | ||
avoid this problem consider downloading one of the release tar balls which | ||
contains gtest already and copying the gest directory from there to your | ||
protobuf directory: | ||
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https://github.com/google/protobuf/releases | ||
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2. Use cmake to generate MSVC project files. Running the following commands | ||
in a command shell will generate project files for Visual Studio 2008 in | ||
a sub-directory named "build". | ||
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$ cd path/to/protobuf/cmake | ||
$ mkdir build | ||
$ cd build | ||
$ cmake -G "Visual Studio 9 2008" .. | ||
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3. Open the generated protobuf.sln file in Microsoft Visual Studio. | ||
4. Choose "Debug" or "Release" configuration as desired. | ||
5. From the Build menu, choose "Build Solution". Wait for compiling to finish. | ||
6. From a command shell, run tests.exe and lite-test.exe and check that all | ||
tests pass. Make sure you have changed the working directory to the output | ||
directory because tests.exe will try to find and run test_plugin.exe | ||
in the working directory. | ||
7. Run extract_includes.bat to copy all the public headers into a separate | ||
"include" directory (under the top-level package directory). | ||
8. Copy the contents of the include directory to wherever you want to put | ||
headers. | ||
9. Copy protoc.exe wherever you put build tools (probably somewhere in your | ||
PATH). | ||
10. Copy libprotobuf.lib, libprotobuf-lite.lib, and libprotoc.lib wherever you | ||
put libraries. | ||
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To avoid conflicts between the MSVC debug and release runtime libraries, when | ||
compiling a debug build of your application, you may need to link against a | ||
debug build of libprotobuf.lib. Similarly, release builds should link against | ||
release libs. | ||
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DLLs vs. static linking | ||
======================= | ||
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Static linking is now the default for the Protocol Buffer libraries. Due to | ||
issues with Win32's use of a separate heap for each DLL, as well as binary | ||
compatibility issues between different versions of MSVC's STL library, it is | ||
recommended that you use static linkage only. However, it is possible to | ||
build libprotobuf and libprotoc as DLLs if you really want. To do this, | ||
do the following: | ||
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1. Add an additional flag "-DBUILD_SHARED_LIBS=ON" when invoking cmake: | ||
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$ cmake -G "Visual Studio 9 2008" -DBUILD_SHARED_LIBS=ON .. | ||
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2. Follow the same steps as described in the above section. | ||
3. When compiling your project, make sure to #define PROTOBUF_USE_DLLS. | ||
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When distributing your software to end users, we strongly recommend that you | ||
do NOT install libprotobuf.dll or libprotoc.dll to any shared location. | ||
Instead, keep these libraries next to your binaries, in your application's | ||
own install directory. C++ makes it very difficult to maintain binary | ||
compatibility between releases, so it is likely that future versions of these | ||
libraries will *not* be usable as drop-in replacements. | ||
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If your project is itself a DLL intended for use by third-party software, we | ||
recommend that you do NOT expose protocol buffer objects in your library's | ||
public interface, and that you statically link protocol buffers into your | ||
library. | ||
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ZLib support | ||
============ | ||
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If you want to include GzipInputStream and GzipOutputStream | ||
(google/protobuf/io/gzip_stream.h) in libprotobuf, you will need to do a few | ||
additional steps: | ||
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1. Obtain a copy of the zlib library. The pre-compiled DLL at zlib.net works. | ||
2. Make sure zlib's two headers are in your include path and that the .lib file | ||
is in your library path. You could place all three files directly into this | ||
cmake directory to compile libprotobuf, but they need to be visible to | ||
your own project as well, so you should probably just put them into the | ||
VC shared icnlude and library directories. | ||
3. Add flag "-DZLIB=ON" when invoking cmake: | ||
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$ cmake -G "Visual Studio 9 2008" -DZLIB=ON .. | ||
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If it reports NOTFOUND for zlib_include or zlib_lib, you might haven't put | ||
the headers or the .lib file in the right directory. | ||
4) Open the generated protobuf.sln file and build as usual. | ||
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Notes on Compiler Warnings | ||
========================== | ||
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The following warnings have been disabled while building the protobuf libraries | ||
and compiler. You may have to disable some of them in your own project as | ||
well, or live with them. | ||
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* C4018 - 'expression' : signed/unsigned mismatch | ||
* C4146 - unary minus operator applied to unsigned type, result still unsigned | ||
* C4244 - Conversion from 'type1' to 'type2', possible loss of data. | ||
* C4251 - 'identifier' : class 'type' needs to have dll-interface to be used by | ||
clients of class 'type2' | ||
* C4267 - Conversion from 'size_t' to 'type', possible loss of data. | ||
* C4305 - 'identifier' : truncation from 'type1' to 'type2' | ||
* C4355 - 'this' : used in base member initializer list | ||
* C4800 - 'type' : forcing value to bool 'true' or 'false' (performance warning) | ||
* C4996 - 'function': was declared deprecated | ||
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C4251 is of particular note, if you are compiling the Protocol Buffer library | ||
as a DLL (see previous section). The protocol buffer library uses templates in | ||
its public interfaces. MSVC does not provide any reasonable way to export | ||
template classes from a DLL. However, in practice, it appears that exporting | ||
templates is not necessary anyway. Since the complete definition of any | ||
template is available in the header files, anyone importing the DLL will just | ||
end up compiling instances of the templates into their own binary. The | ||
Protocol Buffer implementation does not rely on static template members being | ||
unique, so there should be no problem with this, but MSVC prints warning | ||
nevertheless. So, we disable it. Unfortunately, this warning will also be | ||
produced when compiling code which merely uses protocol buffers, meaning you | ||
may have to disable it in your code too. | ||
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#define GOOGLE_PROTOBUF_CMAKE_BUILD | ||
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#define HAVE_PTHREAD ${HAVE_PTHREAD} | ||
#define HAVE_ZLIB ${HAVE_ZLIB} |
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include(CheckCXXSourceCompiles) | ||
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function(find_hash_map) | ||
set(HAVE_HASH_MAP 1 PARENT_SCOPE) | ||
set(HAVE_HASH_SET 1 PARENT_SCOPE) | ||
# Search for hash_map in the following order: | ||
# 1. <unordered_map> ::std::unordered_map | ||
# 2. <tr1/unordered_map> ::std::tr1::unordered_map | ||
# 3. <hash_map> ::hash_map | ||
# 4. <hash_map> ::stdext::hash_map | ||
# 5. <ext/hash_map> ::std::hash_map | ||
# 6. <ext/hash_map> ::__gnu_cxx::hash_map | ||
check_cxx_source_compiles(" | ||
#include <unordered_map> | ||
int main() { ::std::unordered_map<int, int> v; return v[0]; } | ||
" HAS_STD_UNORDERED_MAP) | ||
if (HAS_STD_UNORDERED_MAP) | ||
set(HASH_NAMESPACE ::std PARENT_SCOPE) | ||
set(HASH_MAP_H <unordered_map> PARENT_SCOPE) | ||
set(HASH_MAP_CLASS unordered_map PARENT_SCOPE) | ||
set(HASH_SET_H <unordered_set> PARENT_SCOPE) | ||
set(HASH_SET_CLASS unordered_set PARENT_SCOPE) | ||
return() | ||
endif (HAS_STD_UNORDERED_MAP) | ||
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check_cxx_source_compiles(" | ||
#include <tr1/unordered_map> | ||
int main() { ::std::tr1::unordered_map<int, int> v; return v[0]; } | ||
" HAS_STD_TR1_UNORDERED_MAP) | ||
if (HAS_STD_TR1_UNORDERED_MAP) | ||
set(HASH_NAMESPACE ::std::tr1 PARENT_SCOPE) | ||
set(HASH_MAP_H <tr1/unordered_map> PARENT_SCOPE) | ||
set(HASH_MAP_CLASS unordered_map PARENT_SCOPE) | ||
set(HASH_SET_H <tr1/unordered_set> PARENT_SCOPE) | ||
set(HASH_SET_CLASS unordered_set PARENT_SCOPE) | ||
return() | ||
endif (HAS_STD_TR1_UNORDERED_MAP) | ||
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check_cxx_source_compiles(" | ||
#include <hash_map> | ||
int main() { ::hash_map<int, int> v; return v[0]; } | ||
" HAS_HASH_MAP) | ||
if (HAS_HASH_MAP) | ||
set(HASH_NAMESPACE :: PARENT_SCOPE) | ||
set(HASH_MAP_H <hash_map> PARENT_SCOPE) | ||
set(HASH_MAP_CLASS hash_map PARENT_SCOPE) | ||
set(HASH_SET_H <hash_set> PARENT_SCOPE) | ||
set(HASH_SET_CLASS hash_set PARENT_SCOPE) | ||
return() | ||
endif (HAS_HASH_MAP) | ||
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check_cxx_source_compiles(" | ||
#include <hash_map> | ||
int main() { ::stdext::hash_map<int, int> v; return v[0]; } | ||
" HAS_STDEXT_HASH_MAP) | ||
if (HAS_STDEXT_HASH_MAP) | ||
set(HASH_NAMESPACE ::stdext PARENT_SCOPE) | ||
set(HASH_MAP_H <hash_map> PARENT_SCOPE) | ||
set(HASH_MAP_CLASS hash_map PARENT_SCOPE) | ||
set(HASH_SET_H <hash_set> PARENT_SCOPE) | ||
set(HASH_SET_CLASS hash_set PARENT_SCOPE) | ||
return() | ||
endif (HAS_STDEXT_HASH_MAP) | ||
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check_cxx_source_compiles(" | ||
#include <ext/hash_map> | ||
int main() { ::std::hash_map<int, int> v; return v[0]; } | ||
" HAS_STD_HASH_MAP) | ||
if (HAS_STD_HASH_MAP) | ||
set(HASH_NAMESPACE ::std PARENT_SCOPE) | ||
set(HASH_MAP_H <ext/hash_map> PARENT_SCOPE) | ||
set(HASH_MAP_CLASS hash_map PARENT_SCOPE) | ||
set(HASH_SET_H <ext/hash_set> PARENT_SCOPE) | ||
set(HASH_SET_CLASS hash_set PARENT_SCOPE) | ||
return() | ||
endif (HAS_STD_HASH_MAP) | ||
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check_cxx_source_compiles(" | ||
#include <ext/hash_map> | ||
int main() { ::__gnu_cxx::hash_map<int, int> v; return v[0]; } | ||
" HAS_GNU_CXX_HASH_MAP) | ||
if (HAS_GNU_CXX_HASH_MAP) | ||
set(HASH_NAMESPACE ::gnu_cxx PARENT_SCOPE) | ||
set(HASH_MAP_H <ext/hash_map> PARENT_SCOPE) | ||
set(HASH_MAP_CLASS hash_map PARENT_SCOPE) | ||
set(HASH_SET_H <ext/hash_set> PARENT_SCOPE) | ||
set(HASH_SET_CLASS hash_set PARENT_SCOPE) | ||
return() | ||
endif (HAS_GNU_CXX_HASH_MAP) | ||
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set(HAVE_HASH_MAP 0 PARENT_SCOPE) | ||
set(HAVE_HASH_SET 0 PARENT_SCOPE) | ||
endfunction() | ||
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function(find_hash_compare) | ||
if (MSVC) | ||
check_cxx_source_compiles(" | ||
#include ${HASH_MAP_H} | ||
int main() { ::std::hash_compare<int> cp; return cp(0); } | ||
" HAS_STD_HASH_COMPARE) | ||
if (HAS_STD_HASH_COMPARE) | ||
set(HASH_COMPARE ::std::hash_compare PARENT_SCOPE) | ||
return() | ||
endif (HAS_STD_HASH_COMPARE) | ||
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check_cxx_source_compiles(" | ||
#include ${HASH_MAP_H} | ||
int main() { ::stdext::hash_compare<int> cp; return cp(0); } | ||
" HAS_STDEXT_HASH_COMPARE) | ||
if (HAS_STDEXT_HASH_COMPARE) | ||
set(HASH_COMPARE ::stdext::hash_compare PARENT_SCOPE) | ||
return() | ||
endif (HAS_STDEXT_HASH_COMPARE) | ||
endif (MSVC) | ||
set(HASH_COMPARE PARENT_SCOPE) | ||
endfunction() | ||
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find_hash_map() | ||
find_hash_compare() |
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set(libprotobuf_lite_files | ||
${protobuf_source_dir}/src/google/protobuf/arena.cc | ||
${protobuf_source_dir}/src/google/protobuf/arenastring.cc | ||
${protobuf_source_dir}/src/google/protobuf/extension_set.cc | ||
${protobuf_source_dir}/src/google/protobuf/generated_message_util.cc | ||
${protobuf_source_dir}/src/google/protobuf/io/coded_stream.cc | ||
${protobuf_source_dir}/src/google/protobuf/io/zero_copy_stream.cc | ||
${protobuf_source_dir}/src/google/protobuf/io/zero_copy_stream_impl_lite.cc | ||
${protobuf_source_dir}/src/google/protobuf/message_lite.cc | ||
${protobuf_source_dir}/src/google/protobuf/repeated_field.cc | ||
${protobuf_source_dir}/src/google/protobuf/stubs/atomicops_internals_x86_gcc.cc | ||
${protobuf_source_dir}/src/google/protobuf/stubs/atomicops_internals_x86_msvc.cc | ||
${protobuf_source_dir}/src/google/protobuf/stubs/common.cc | ||
${protobuf_source_dir}/src/google/protobuf/stubs/once.cc | ||
${protobuf_source_dir}/src/google/protobuf/stubs/stringprintf.cc | ||
${protobuf_source_dir}/src/google/protobuf/wire_format_lite.cc | ||
) | ||
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add_library(libprotobuf-lite ${libprotobuf_lite_files}) | ||
target_link_libraries(libprotobuf-lite ${CMAKE_THREAD_LIBS_INIT}) | ||
set_target_properties(libprotobuf-lite PROPERTIES | ||
COMPILE_DEFINITIONS LIBPROTOBUF_EXPORTS | ||
OUTPUT_NAME ${LIB_PREFIX}protobuf-lite) |
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set(libprotobuf_files | ||
${protobuf_source_dir}/src/google/protobuf/any.cc | ||
${protobuf_source_dir}/src/google/protobuf/any.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/api.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/compiler/importer.cc | ||
${protobuf_source_dir}/src/google/protobuf/compiler/parser.cc | ||
${protobuf_source_dir}/src/google/protobuf/descriptor.cc | ||
${protobuf_source_dir}/src/google/protobuf/descriptor.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/descriptor_database.cc | ||
${protobuf_source_dir}/src/google/protobuf/duration.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/dynamic_message.cc | ||
${protobuf_source_dir}/src/google/protobuf/empty.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/extension_set_heavy.cc | ||
${protobuf_source_dir}/src/google/protobuf/field_mask.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/generated_message_reflection.cc | ||
${protobuf_source_dir}/src/google/protobuf/io/gzip_stream.cc | ||
${protobuf_source_dir}/src/google/protobuf/io/printer.cc | ||
${protobuf_source_dir}/src/google/protobuf/io/strtod.cc | ||
${protobuf_source_dir}/src/google/protobuf/io/tokenizer.cc | ||
${protobuf_source_dir}/src/google/protobuf/io/zero_copy_stream_impl.cc | ||
${protobuf_source_dir}/src/google/protobuf/map_field.cc | ||
${protobuf_source_dir}/src/google/protobuf/message.cc | ||
${protobuf_source_dir}/src/google/protobuf/reflection_ops.cc | ||
${protobuf_source_dir}/src/google/protobuf/service.cc | ||
${protobuf_source_dir}/src/google/protobuf/source_context.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/struct.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/stubs/structurally_valid.cc | ||
${protobuf_source_dir}/src/google/protobuf/stubs/strutil.cc | ||
${protobuf_source_dir}/src/google/protobuf/stubs/substitute.cc | ||
${protobuf_source_dir}/src/google/protobuf/text_format.cc | ||
${protobuf_source_dir}/src/google/protobuf/timestamp.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/type.pb.cc | ||
${protobuf_source_dir}/src/google/protobuf/unknown_field_set.cc | ||
${protobuf_source_dir}/src/google/protobuf/wire_format.cc | ||
${protobuf_source_dir}/src/google/protobuf/wrappers.pb.cc | ||
) | ||
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add_library(libprotobuf ${libprotobuf_lite_files} ${libprotobuf_files}) | ||
target_link_libraries(libprotobuf ${CMAKE_THREAD_LIBS_INIT} ${ZLIB_LIBRARIES}) | ||
set_target_properties(libprotobuf PROPERTIES | ||
COMPILE_DEFINITIONS LIBPROTOBUF_EXPORTS | ||
OUTPUT_NAME ${LIB_PREFIX}protobuf) |
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