Initial vcpkg support

CMakeLists.txt

@@ -1,24 +1,26 @@
 # This file was generated automatically by cmkr.
 
-# Create a configure-time dependency on cmake.toml to improve IDE support
-configure_file(cmake.toml cmake.toml COPYONLY)
-
 cmake_minimum_required(VERSION 2.8...3.8)
 
-# Regenerate CMakeLists.txt file when necessary
+# Regenerate CMakeLists.txt automatically in the root project
 set(CMKR_ROOT_PROJECT OFF)
 if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
 	set(CMKR_ROOT_PROJECT ON)
 
+	# Bootstrap cmkr
 	include(cmkr.cmake OPTIONAL RESULT_VARIABLE CMKR_INCLUDE_RESULT)
 	if(CMKR_INCLUDE_RESULT)
 		cmkr()
 	endif()
 
+	# Enable folder support
+	set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 endif()
 
-# Enable folder support
-set_property(GLOBAL PROPERTY USE_FOLDERS ON)
+# Create a configure-time dependency on cmake.toml to improve IDE support
+if(CMKR_ROOT_PROJECT)
+	configure_file(cmake.toml cmake.toml COPYONLY)
+endif()
 
 # Hack to hide a warning during cmkr bootstrapping on Windows
 if(CMAKE_BUILD_TYPE)
@@ -34,6 +36,7 @@ project(cmkr
 		"CMakeLists generator from TOML"
 )
 
+# third_party
 set(CMKR_CMAKE_FOLDER ${CMAKE_FOLDER})
 if(CMAKE_FOLDER)
 	set(CMAKE_FOLDER "${CMAKE_FOLDER}/third_party")

cmake.toml

@@ -1,5 +1,5 @@
 [cmake]
-minimum = "2.8...3.8"
+version = "2.8...3.8"
 
 [project]
 cmake-before = """

cmake/cmkr.cmake

@@ -2,7 +2,7 @@ include_guard()
 
 # Change these defaults to point to your infrastructure if desired
 set(CMKR_REPO "https://github.com/MoAlyousef/cmkr" CACHE STRING "cmkr git repository")
-set(CMKR_TAG "archive_67ac9a43" CACHE STRING "cmkr git tag (this needs to be available forever)")
+set(CMKR_TAG "archive_84f6b39f" CACHE STRING "cmkr git tag (this needs to be available forever)")
 set(CMKR_EXECUTABLE "" CACHE FILEPATH "cmkr executable")
 set(CMKR_SKIP_GENERATION OFF CACHE BOOL "skip automatic cmkr generation")
 

include/literals.h

@@ -11,7 +11,7 @@ int %s() {
 
 static const char *cmake_toml = R"lit(
 [cmake]
-minimum = "3.15"
+version = "3.15"
 # subdirs = []
 # build-dir = ""
 # cpp-flags = []

src/cmkrlib/cmake.cpp

@@ -58,8 +58,8 @@ CMake::CMake(const std::string &path, bool build) {
     } else {
         if (toml.contains("cmake")) {
             const auto &cmake = toml::find(toml, "cmake");
-            cmake_version = toml::find(cmake, "minimum").as_string();
-            cmkr_include = toml::find_or(cmake, "cmkr-include", "cmkr.cmake");
+            cmake_version = toml::find(cmake, "version").as_string();
+            cmkr_include = toml::find_or(cmake, "cmkr-include", cmkr_include);
             cppflags = optional_array(cmake, "cpp-flags");
             cflags = optional_array(cmake, "c-flags");
             linkflags = optional_array(cmake, "link-flags");
@@ -130,9 +130,10 @@ CMake::CMake(const std::string &path, bool build) {
                 if (pkg.second.is_string()) {
                     p.version = pkg.second.as_string();
                 } else {
-                    p.version = toml::find_or(pkg.second, "version", "");
-                    p.required = toml::find_or(pkg.second, "required", false);
-                    p.components = toml::find_or(pkg.second, "components", std::vector<std::string>());
+                    p.version = toml::find_or(pkg.second, "version", p.version);
+                    p.required = toml::find_or(pkg.second, "required", p.required);
+                    p.config = toml::find_or(pkg.second, "config", p.config);
+                    p.components = toml::find_or(pkg.second, "components", p.components);
                 }
                 packages.push_back(p);
             }
@@ -186,8 +187,8 @@ CMake::CMake(const std::string &path, bool build) {
                     target.properties = toml::find<prop_map>(t, "properties");
                 }
 
-                target.cmake_before = toml::find_or(t, "cmake-before", "");
-                target.cmake_after = toml::find_or(t, "cmake-after", "");
+                target.cmake_before = toml::find_or(t, "cmake-before", target.cmake_before);
+                target.cmake_after = toml::find_or(t, "cmake-after", target.cmake_after);
                 target.include_before = optional_array(t, "include-before");
                 target.include_after = optional_array(t, "include-after");
 
@@ -218,6 +219,19 @@ CMake::CMake(const std::string &path, bool build) {
                 installs.push_back(inst);
             }
         }
+
+        if (toml.contains("vcpkg")) {
+            const auto &v = toml::find(toml, "vcpkg");
+            vcpkg.version = toml::find(v, "version").as_string();
+            vcpkg.packages = toml::find<decltype(vcpkg.packages)>(v, "packages");
+
+            // This allows the user to use a custom pmm version if desired
+            if (contents.count("pmm") == 0) {
+                contents["pmm"]["url"] = "https://github.com/vector-of-bool/pmm/archive/refs/tags/1.5.1.tar.gz";
+                // Hack to not execute pmm's example CMakeLists.txt
+                contents["pmm"]["SOURCE_SUBDIR"] = "pmm";
+            }
+        }
     }
 }
 } // namespace cmake

src/cmkrlib/cmake.hpp

@@ -28,9 +28,15 @@ struct Package {
     std::string name;
     std::string version;
     bool required = true;
+    bool config = true;
     std::vector<std::string> components;
 };
 
+struct Vcpkg {
+    std::string version;
+    std::vector<std::string> packages;
+};
+
 enum TargetType {
     target_executable,
     target_library,
@@ -79,8 +85,9 @@ struct Install {
 };
 
 struct CMake {
-    std::string cmake_version;
-    std::string cmkr_include;
+    // This is the CMake version required to use all cmkr versions.
+    std::string cmake_version = "3.15";
+    std::string cmkr_include = "cmkr.cmake";
     std::string build_dir = "build";
     std::string generator;
     std::string config;
@@ -101,6 +108,7 @@ struct CMake {
     std::vector<Setting> settings;
     std::vector<Option> options;
     std::vector<Package> packages;
+    Vcpkg vcpkg;
     tsl::ordered_map<std::string, std::map<std::string, std::string>> contents;
     std::vector<Target> targets;
     std::vector<Test> tests;

src/cmkrlib/gen.cpp

@@ -231,10 +231,6 @@ struct Command {
 
     template <class K, class V>
     bool print_arg(const std::pair<K, V> &kv) {
-        std::stringstream tmp;
-        tmp << kv.second;
-        auto str = tmp.str();
-
         if (kv.second.empty()) {
             return true;
         }
@@ -242,7 +238,7 @@ struct Command {
         had_newline = true;
         print_arg(kv.first);
         depth++;
-        print_arg(str);
+        print_arg(kv.second);
         depth--;
 
         return true;
@@ -410,17 +406,6 @@ int generate_cmake(const char *path, bool root) {
     inject_includes(cmake.include_after);
     inject_cmake(cmake.cmake_after);
 
-    if (!cmake.packages.empty()) {
-        for (const auto &dep : cmake.packages) {
-            auto version = dep.version;
-            if (version == "*")
-                version.clear();
-            auto required = dep.required ? "REQUIRED" : "";
-            auto components = std::make_pair("COMPONENTS", dep.components);
-            cmd("find_package")(dep.name, version, required, components).endl();
-        }
-    }
-
     if (!cmake.contents.empty()) {
         cmd("include")("FetchContent").endl();
         for (const auto &dep : cmake.contents) {
@@ -450,7 +435,32 @@ int generate_cmake(const char *path, bool root) {
         }
     }
 
+    if (!cmake.vcpkg.version.empty()) {
+        assert("pmm is required in fetch-content for vcpkg to work" && cmake.contents.count("pmm") != 0);
+        comment("Bootstrap vcpkg");
+        cmd("include")("${pmm_SOURCE_DIR}/pmm.cmake");
+        tsl::ordered_map<std::string, std::vector<std::string>> vcpkg_args;
+        vcpkg_args["REVISION"] = { cmake.vcpkg.version };
+        vcpkg_args["REQUIRES"] = cmake.vcpkg.packages;
+        auto vcpkg = std::make_pair("VCPKG", vcpkg_args);
+        cmd("pmm")(vcpkg).endl();
+    }
+
+    if (!cmake.packages.empty()) {
+        comment("Packages");
+        for (const auto &dep : cmake.packages) {
+            auto version = dep.version;
+            if (version == "*")
+                version.clear();
+            auto required = dep.required ? "REQUIRED" : "";
+            auto config = dep.config ? "CONFIG" : "";
+            auto components = std::make_pair("COMPONENTS", dep.components);
+            cmd("find_package")(dep.name, version, required, config, components).endl();
+        }
+    }
+
     if (!cmake.options.empty()) {
+        comment("Options");
         for (const auto &opt : cmake.options) {
             cmd("option")(opt.name, opt.comment, opt.val ? "ON" : "OFF");
         }
@@ -458,6 +468,7 @@ int generate_cmake(const char *path, bool root) {
     }
 
     if (!cmake.settings.empty()) {
+        comment("Settings");
         for (const auto &set : cmake.settings) {
             std::string set_val;
             if (set.val.index() == 1) {