libelas: new recipe

recipes/libelas/all/CMakeLists.txt

@@ -0,0 +1,32 @@
+# Adapted from the original CMakeLists.txt
+# mirror: https://github.com/kou1okada/libelas/blob/master/CMakeLists.txt
+
+cmake_minimum_required(VERSION 3.15)
+project(libelas LANGUAGES CXX)
+
+if(USE_SSE3)
+    if(MSVC)
+        add_compile_options(/arch:SSE3)
+    else()
+        add_compile_options(-msse3)
+    endif()
+endif()
+
+find_package(OpenMP REQUIRED)
+
+add_library(elas
+    descriptor.cpp
+    elas.cpp
+    filter.cpp
+    matrix.cpp
+    triangle.cpp
+)
+
+target_link_libraries(elas PRIVATE OpenMP::OpenMP_CXX)
+
+install(TARGETS elas
+    ARCHIVE DESTINATION lib
+    LIBRARY DESTINATION lib
+    RUNTIME DESTINATION bin
+)
+install(FILES elas.h DESTINATION include)

recipes/libelas/all/conandata.yml

@@ -0,0 +1,13 @@
+sources:
+  "cci.20150630":
+    sources:
+      url: "https://www.cvlibs.net/downloads/libelas_omp.zip"
+      sha256: "636db6e10a053c84d3b1de3baa8224e0ded6caf4bae27021a5293ead37894ad3"
+    license:
+      url: "https://raw.githubusercontent.com/kou1okada/libelas/master/README.TXT"
+      sha256: "627924f4cb0fe790de303fe721233d227a6d0c1734ed39fa4641923dcb9c5b8f"
+patches:
+  "cci.20150630":
+    - patch_file: "patches/001-fix-cast.patch"
+      patch_type: "portability"
+      patch_description: "Add a missing explicit cast from int to float"

recipes/libelas/all/conanfile.py

@@ -0,0 +1,83 @@
+import os
+
+from conan import ConanFile
+from conan.errors import ConanInvalidConfiguration
+from conan.tools.build import check_min_cppstd
+from conan.tools.cmake import CMake, CMakeToolchain, cmake_layout, CMakeDeps
+from conan.tools.files import copy, get, rm, download, load, save, export_conandata_patches, apply_conandata_patches
+
+required_conan_version = ">=1.53.0"
+
+
+class LibelasConan(ConanFile):
+    name = "libelas"
+    description = "LIBELAS is a C++ library for computing disparity maps from rectified graylevel stereo pairs"
+    license = "GPL-3.0-or-later"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://www.cvlibs.net/software/libelas/"
+    topics = ("computer-vision", "stereo-matching", "disparity", "depth")
+
+    package_type = "library"
+    settings = "os", "arch", "compiler", "build_type"
+    options = {
+        "shared": [True, False],
+        "fPIC": [True, False],
+    }
+    default_options = {
+        "shared": False,
+        "fPIC": True,
+    }
+
+    def export_sources(self):
+        export_conandata_patches(self)
+        copy(self, "CMakeLists.txt", self.recipe_folder, os.path.join(self.export_sources_folder, "src"))
+
+    def config_options(self):
+        if self.settings.os == "Windows":
+            del self.options.fPIC
+
+    def configure(self):
+        if self.options.shared:
+            self.options.rm_safe("fPIC")
+
+    def layout(self):
+        cmake_layout(self, src_folder="src")
+
+    def requirements(self):
+        self.requires("llvm-openmp/17.0.6")
+
+    def validate(self):
+        if self.settings.compiler.cppstd:
+            check_min_cppstd(self, 98)
+        if self.settings.arch not in ["x86", "x86_64"]:
+            raise ConanInvalidConfiguration("Only x86 and x86_64 architectures are supported")
+
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version]["sources"], strip_root=True)
+        download(self, **self.conan_data["sources"][self.version]["license"], filename="README.TXT")
+
+    def generate(self):
+        tc = CMakeToolchain(self)
+        tc.variables["USE_SSE3"] = self.settings.arch in ["x86", "x86_64"]
+        tc.generate()
+        deps = CMakeDeps(self)
+        deps.generate()
+
+    def build(self):
+        apply_conandata_patches(self)
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def _read_license(self):
+        content = load(self, os.path.join(self.source_folder, "README.TXT"))
+        return "\n".join(content.splitlines()[:46])
+
+    def package(self):
+        save(self, os.path.join(self.package_folder, "licenses", "LICENSE"), self._read_license())
+        cmake = CMake(self)
+        cmake.install()
+        rm(self, "*.pdb", self.package_folder, recursive=True)
+
+    def package_info(self):
+        self.cpp_info.libs = ["elas"]

recipes/libelas/all/patches/001-fix-cast.patch

@@ -0,0 +1,13 @@
+Fix
+error: non-constant-expression cannot be narrowed from type 'int32_t' (aka 'int') to 'float' in initializer list [-Wc++11-narrowing]
+--- elas.cpp
++++ elas.cpp
+@@ -874,7 +874,7 @@
+ 			tri_u[1] = p_support[c2].u-p_support[c2].d;
+ 			tri_u[2] = p_support[c3].u-p_support[c3].d;
+ 		}
+-		float tri_v[3] = {p_support[c1].v,p_support[c2].v,p_support[c3].v};
++		float tri_v[3] = {static_cast<float>(p_support[c1].v), static_cast<float>(p_support[c2].v), static_cast<float>(p_support[c3].v)};
+
+ 		for (uint32_t j=0; j<3; j++) {
+ 			for (uint32_t k=0; k<j; k++) {

recipes/libelas/all/test_package/CMakeLists.txt

@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.15)
+project(test_package LANGUAGES CXX)
+
+find_package(libelas REQUIRED CONFIG)
+
+add_executable(${PROJECT_NAME} test_package.cpp)
+target_link_libraries(${PROJECT_NAME} PRIVATE libelas::libelas)
+target_compile_features(${PROJECT_NAME} PRIVATE cxx_std_98)

recipes/libelas/all/test_package/conanfile.py

@@ -0,0 +1,26 @@
+from conan import ConanFile
+from conan.tools.build import can_run
+from conan.tools.cmake import cmake_layout, CMake
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "CMakeDeps", "CMakeToolchain", "VirtualRunEnv"
+    test_type = "explicit"
+
+    def requirements(self):
+        self.requires(self.tested_reference_str)
+
+    def layout(self):
+        cmake_layout(self)
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if can_run(self):
+            bin_path = os.path.join(self.cpp.build.bindir, "test_package")
+            self.run(bin_path, env="conanrun")

recipes/libelas/all/test_package/test_package.cpp

@@ -0,0 +1,6 @@
+#include <elas.h>
+
+int main() {
+    Elas::parameters param;
+    Elas elas(param);
+}

recipes/libelas/config.yml

@@ -0,0 +1,3 @@
+versions:
+  "cci.20150630":
+    folder: all