Add FLANN 1.9.1

recipes/flann/all/CMakeLists.txt

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+cmake_minimum_required(VERSION 2.8.11)
+project(cmake_wrapper)
+
+include(conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_subdirectory("source_subfolder")

recipes/flann/all/conandata.yml

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+sources:
+  "1.9.1":
+    sha256: b23b5f4e71139faa3bcb39e6bbcc76967fbaf308c4ee9d4f5bfbeceaa76cc5d3
+    url: https://github.com/mariusmuja/flann/archive/1.9.1.tar.gz

recipes/flann/all/conanfile.py

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+import glob
+import os
+
+from conans import ConanFile, CMake, tools
+
+
+class LibFlannConan(ConanFile):
+    name = "flann"
+    description = "Fast Library for Approximate Nearest Neighbors"
+    topics = "conan", "flann"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://www.cs.ubc.ca/research/flann/"
+    license = "BSD-3-Clause"
+    exports_sources = "CMakeLists.txt"
+    generators = "cmake", "cmake_find_package"
+
+    settings = "os", "arch", "compiler", "build_type"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+        "with_hdf5": [True, False]
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+        "with_hdf5": False
+    }
+
+    _source_subfolder = "source_subfolder"
+    _build_subfolder = "build_subfolder"
+    _cmake = None
+
+    def config_options(self):
+        if self.settings.compiler == "Visual Studio":
+            del self.options.fPIC
+
+    def requirements(self):
+        if self.options.with_hdf5:
+            self.requires("hdf5/1.10.6")
+
+    def source(self):
+        tools.get(**self.conan_data["sources"][self.version])
+        extracted_dir = self.name + "-" + self.version
+        os.rename(extracted_dir, self._source_subfolder)
+
+        # Workaround issue with empty sources for a CMake target
+        flann_cpp_dir = os.path.join(self._source_subfolder, "src", "cpp")
+        with open(os.path.join(flann_cpp_dir, "empty.cpp"), "w") as fd:
+            fd.write("\n")  # touch
+
+        tools.replace_in_file(
+            os.path.join(flann_cpp_dir, "CMakeLists.txt"),
+            'add_library(flann_cpp SHARED "")',
+            'add_library(flann_cpp SHARED empty.cpp)'
+        )
+        tools.replace_in_file(
+            os.path.join(flann_cpp_dir, "CMakeLists.txt"),
+            'add_library(flann SHARED "")',
+            'add_library(flann SHARED empty.cpp)'
+        )
+
+    def _configure_cmake(self):
+        if self._cmake is not None:
+            return self._cmake
+        self._cmake = CMake(self)
+
+        # Only build the C++ libraries
+        self._cmake.definitions["BUILD_DOC"] = "OFF"
+        self._cmake.definitions["BUILD_EXAMPLES"] = "OFF"
+        self._cmake.definitions["BUILD_TESTS"] = "OFF"
+        self._cmake.definitions["BUILD_C_BINDINGS"] = "OFF"
+        self._cmake.definitions["BUILD_MATLAB_BINDINGS"] = "OFF"
+        self._cmake.definitions["BUILD_PYTHON_BINDINGS"] = "OFF"
+
+        # Workaround issue with flann_cpp
+        if self.settings.os == "Windows" and self.options.shared:
+            self._cmake.definitions["CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS"] = True
+
+        self._cmake.configure(build_folder=self._build_subfolder)
+        return self._cmake
+
+    def build(self):
+        cmake = self._configure_cmake()
+        cmake.build()
+
+    def package(self):
+        cmake = self._configure_cmake()
+        cmake.install()
+
+        self.copy("COPYING", src=self._source_subfolder, dst="licenses")
+
+        # Remove pkg-config files
+        tools.rmdir(os.path.join(self.package_folder, "lib", "pkgconfig"))
+        # Remove MS runtime files (KB-H021)
+        for file_to_remove in ["concrt140.dll", "msvcp140.dll", "vcruntime140.dll"]:
+            path = os.path.join(self.package_folder, "bin", file_to_remove)
+            if os.path.isfile(path):
+                os.remove(path)
+
+        # Remove static/dynamic libraries depending on the build mode
+        if self.options.shared:
+            for file_to_remove in glob.glob(os.path.join(self.package_folder, "lib", "flann_cpp_s*")):
+                os.remove(file_to_remove)
+        else:
+            if self.settings.os != "Linux":
+                tools.rmdir(os.path.join(self.package_folder, "bin"))
+            else:
+                for file_to_remove in glob.glob(os.path.join(self.package_folder, "lib", "*.so*")):
+                    os.remove(file_to_remove)
+
+    def package_info(self):
+        self.cpp_info.names["cmake_find_package"] = "FLANN"
+        self.cpp_info.names["cmake_find_package_multi"] = "FLANN"
+
+        if self.options.shared:
+            self.cpp_info.libs = ["flann_cpp"]
+        else:
+            self.cpp_info.libs = ["flann_cpp_s"]

recipes/flann/all/test_package/CMakeLists.txt

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+cmake_minimum_required(VERSION 2.8.11)
+
+project(test_package LANGUAGES CXX)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_executable(${CMAKE_PROJECT_NAME} test_package.cpp)
+target_link_libraries(${CMAKE_PROJECT_NAME} ${CONAN_LIBS})

recipes/flann/all/test_package/conanfile.py

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+import os.path
+
+from conans import ConanFile, CMake
+
+
+class FlannTestConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        bin_path = os.path.join("bin", "test_package")
+        self.run(bin_path, run_environment=True)

recipes/flann/all/test_package/test_package.cpp

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+#include <flann/flann.hpp>
+
+int main()
+{
+    flann::Matrix<float> dataset;
+    flann::Matrix<float> query;
+}

recipes/flann/config.yml

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+versions:
+  "1.9.1":
+    folder: all