Get compile err with fswatch-1.18.3, please have a watch of this

[Staok]

MSYS2 ucrt env, win10, use gcc/g++, run in cmd:

./configure --prefix=<path/to/build> CC=gcc CXX=g++
make

get this:

And I am tired, why not just put lib package into msys2 or something, I beleve most of people don't like compile everything by self...we use it, not play the compile process

[PolarGoose]

Unfortunately, even if you manage to build the binary using MSYS2, it will not work. I have tried. The resulting binary hangs when you press Ctrl+C. I think something is wrong with the MSYS2 POSIX implementation. I haven't investigated, because Cygwin works properly.

You don't need to build the binary yourself, please look at: #346

[Staok]

Unfortunately, even if you manage to build the binary using MSYS2, it will not work. I have tried. The resulting binary hangs when you press Ctrl+C. I think something is wrong with the MSYS2 POSIX implementation. I haven't investigated, because Cygwin works properly.

You don't need to build the binary yourself, please look at: #346

You know what, I want the lib .so or .a for programming and compile with my proj, a cli bin is not good to play with coding. And, from the err result of compilation I post above, its put a fs:path pass to a std::string, that sure err in gcc/mingw... so, the idea of this lib is pretty good, but ...

[PolarGoose]

Ok, sorry, I didn't know that you were trying to build only a library, because you are running make and it is building the whole codebase.

If you want to build only libfswatch, then you can do the following:

• Run C:\msys64\ucrt64.exe
• Execute the commands

pacman --sync --sysupgrade --refresh --noconfirm
pacman --sync --needed --noconfirm gcc base-devel cmake git autotools make gettext gettext-devel

git clone --branch 1.18.3 --depth 1 https://github.com/emcrisostomo/fswatch.git
cd fswatch
mkdir build
cd build
cmake .. -D BUILD_LIBS_ONLY=ON -D CMAKE_BUILD_TYPE=Release
make

By the way, you can just use C# FileSystemWatcher or Python watchfiles library. Is there any reason to use libfswatch?

[Staok]

Are we use the same things? I tried the very first way of mine(run ./configure), and your ways(cmake ..), and other several ways , they all not reach the lib compile output...I am tired again as the first time I write the issue..

for your way: running in cmd:

cmake .. -D BUILD_LIBS_ONLY=ON -D CMAKE_BUILD_TYPE=Release

the source code not have this BUILD_LIBS_ONLY, I got these msg from cmake:

CMake Warning:
  Manually-specified variables were not used by the project:

    BUILD_LIBS_ONLY

-- Build files have been written to: D:/toolchain/temp/fswatch/build

I ignore it and run make, guess what? there is no the Makefile in the build dir,
Because no '-G' for cmake, so cmake default use ninja as the generator, so get these msg from make:

make: *** No targets specified and no makefile found.  Stop.

——————————————————————————————

Try use cmake-gui to run the CMakeLists.txt of fswatch dir that using git downloaded you mentioned above, and use make, get the same result:

[PolarGoose]

Ok, apparently the BUILD_LIBS_ONLY is only available if you clone master branch.
Anyway, it is not needed.

Run make libfswatch instead of make.
Also, make sure you follow the instructions that I provided.

To be honest, I think you are just wasting your time. What problem do you try to solve by using libfswatch?

[Staok]

The reason I use libfswatch is that need to integrate it into my program, and more flexible by using its APIs, to watch the filesystem changings. And I think this is also the wide way that people using this project, its not like a 'cp' or 'top' the basic cli tool, its more like a basic program lib for programing. And, I am looking for one lib that cross platforms that watch filesystem, not only for win, but win and linux both.

[PolarGoose]

@Staok,

If you need file system watching functionality and you really want C++, then why don't you use efsw, which is much easier to integrate (just use Conan or Vcpkg package manager)

[Staok]

@Staok,

If you need file system watching functionality and you really want C++, then why don't you use efsw, which is much easier to integrate (just use Conan or Vcpkg package manager)

OK, I will try efsw. But the hard of compile this lib is exists, the compile err exists above I post..

[Staok]

https://packages.msys2.org/base/mingw-w64-fswatch

And guess what? I found that MSYS2's fswatch packages though not provide sort of 'pkg-config' package, but installed the lib bin file liblibfswatch.dll.a, and head files ucrt64/include/libfswatch. So I just direct use them:
cmake:

target_link_libraries(${PROJECT_NAME} PRIVATE
    libfswatch
)

and in program include the head file(C APIs):

#include "libfswatch/c/libfswatch.h"

And everything of this lib can worked...

Why not provide the libfswatch.pc or libfswatchConfig.cmake files for us to use pkg_check_modules or find_package to link lib into our projects. There are many unusual things here, from compilation to link lib..