plfit: add package (#5992)

* plfit: add package

* patch find math

* limit plat

packages/p/plfit/xmake.lua

@@ -0,0 +1,48 @@
+package("plfit")
+    set_homepage("https://github.com/ntamas/plfit")
+    set_description("Fitting power-law distributions to empirical data, according to the method of Clauset, Shalizi and Newman")
+    set_license("GPL-2.0")
+
+    add_urls("https://github.com/ntamas/plfit/archive/refs/tags/$(version).tar.gz",
+             "https://github.com/ntamas/plfit.git")
+
+    add_versions("1.0.0", "b64eff580c721809d32be69c43070c37c9200ca02e5169d9ae7972fbd759977e")
+
+    add_configs("sse", {description = "Use SSE/SSE2 optimizations if available", default = false, type = "boolean"})
+    add_configs("openmp", {description = "Use OpenMP parallelization if available (experimental)", default = false, type = "boolean"})
+
+    if is_plat("linux", "bsd") then
+        add_syslinks("m")
+    end
+
+    add_deps("cmake")
+
+    on_load(function (package)
+        if package:config("openmp") then
+            package:add("deps", "openmp")
+        end
+
+        if not package:config("shared") then
+            package:add("defines", "PLFIT_STATIC")
+        end
+    end)
+
+    on_install("!cross", function (package)
+        io.replace("CMakeLists.txt", "add_subdirectory(test)", "", {plain = true})
+        if package:is_plat("cross", "wasm") then
+            io.replace("CMakeLists.txt", "FIND_LIBRARY(MATH_LIBRARY NAMES m)", "set(MATH_LIBRARY )", {plain = true})
+        end
+
+        local configs = {}
+        table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:is_debug() and "Debug" or "Release"))
+        table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))
+        table.insert(configs, "-DPLFIT_ENABLE_LTO=" .. (package:config("lto") and "ON" or "OFF"))
+
+        table.insert(configs, "-DPLFIT_USE_SSE=" .. (package:config("sse") and "ON" or "OFF"))
+        table.insert(configs, "-DPLFIT_USE_OPENMP=" .. (package:config("openmp") and "ON" or "OFF"))
+        import("package.tools.cmake").install(package, configs)
+    end)
+
+    on_test(function (package)
+        assert(package:has_cfuncs("plfit_continuous_options_init", {includes = "plfit/plfit.h"}))
+    end)