openssl: add LLVM resource compiler support for MinGW

packages/o/openssl/makefile/patch.lua

@@ -0,0 +1,35 @@
+function _patch_for_llvm_rc(package, opt)
+    if package:is_plat("mingw") and package:has_tool("mrc", "llvm_rc", "llvm-rc", "rc") then
+        local cc = package:build_getenv("cc")
+        local cflags = opt.buildenvs.CFLAGS
+        local tmpfile = path.unix(os.tmpfile() .. ".c")
+        io.writefile(tmpfile, "int main(void) { return 0; }\n")
+        local compile_out, compile_err = try {function() return os.iorun(format("%s -v %s %s", cc, cflags, tmpfile)) end}
+        local include_dirs = {}
+        local in_include_section = false
+        for _, verbose_command in ipairs({compile_out, compile_err}) do
+            if verbose_command then
+                for line in verbose_command:gmatch("[^\r\n]+") do
+                    if line:find("#include.*search") then
+                        in_include_section = true
+                    elseif line:find("End.*search") then
+                        in_include_section = false
+                    elseif in_include_section and not line:find("#include.*search") then
+                        table.insert(include_dirs, line:match("^%s*(.-)%s*$"))
+                    end
+                end
+            end
+        end
+        local include_directive = ""
+        for _, include_dir in ipairs(include_dirs) do
+            include_directive = include_directive .. format([[ -I "%s"]], include_dir)
+        end
+        -- $(RC)  $(RCFLAGS)  -o $@ libcrypto.rc =>  $(RC) -I inc_dir -I inc_dir -FO $@ libcrypto.rc
+        io.gsub("Makefile", [[%$%(RC%).-%$@%s+(%S+)]], format("$(RC) %s -FO $@ ", include_directive).."%1")
+        io.gsub("Makefile", "(%S+).res.o", "%1.res")
+    end
+end
+
+function main(package, opt)
+    _patch_for_llvm_rc(package, opt)
+end

packages/o/openssl/xmake.lua

@@ -184,7 +184,14 @@ package("openssl")
             table.insert(configs, "--debug")
         end
 
-        local buildenvs = import("package.tools.autoconf").buildenvs(package)
+        local ldflags = {}
+        if package:is_plat("mingw") and package:has_tool("mrc", "llvm_rc", "llvm-rc", "rc") then
+            -- llvm-rc should be used with lld linker
+            if package:has_tool("cc", "clang") then
+                table.insert(ldflags, "-fuse-ld=lld")
+            end
+        end
+        local buildenvs = import("package.tools.autoconf").buildenvs(package, {ldflags = ldflags})
         if is_host("windows") and package:is_plat("android") then
             buildenvs.CFLAGS = buildenvs.CFLAGS:gsub("\\", "/")
             buildenvs.CXXFLAGS = buildenvs.CXXFLAGS:gsub("\\", "/")
@@ -213,6 +220,7 @@ package("openssl")
             os.vrunv("./config", configs, {shell = true, envs = buildenvs})
         end
 
+        import("makefile.patch")(package, {buildenvs = buildenvs})
         import("package.tools.make").build(package)
         import("package.tools.make").make(package, {"install_sw"})
         if package:config("shared") then