[gcc] Migrate to conan v2, add fortran

* Migrate gcc recipe to conan v2
* Add fortran as an enabled language to ensure that gfortran is built
* Add binutils as a build_requires to remove dependency on system
  binaries
* Refactor package test to ensure that the package compilers are under
  test and not the system compilers
* Add fortran test binary
* Export environment variables in the buildenv for gcc, g++, gfortran,
  ar, nm, ranlib

recipes/gcc/all/conandata.yml

@@ -1,7 +1,7 @@
 sources:
-  "10.2.0":
-    sha256: 27e879dccc639cd7b0cc08ed575c1669492579529b53c9ff27b0b96265fa867d
-    url: https://ftp.gnu.org/gnu/gcc/gcc-10.2.0/gcc-10.2.0.tar.gz
   "12.2.0":
     sha256: ac6b317eb4d25444d87cf29c0d141dedc1323a1833ec9995211b13e1a851261c
     url: https://ftp.gnu.org/gnu/gcc/gcc-12.2.0/gcc-12.2.0.tar.gz
+  "10.2.0":
+    sha256: 27e879dccc639cd7b0cc08ed575c1669492579529b53c9ff27b0b96265fa867d
+    url: https://ftp.gnu.org/gnu/gcc/gcc-10.2.0/gcc-10.2.0.tar.gz

recipes/gcc/all/conanfile.py

@@ -1,126 +1,162 @@
-from conans import ConanFile, tools, AutoToolsBuildEnvironment
-from conans.errors import ConanException, ConanInvalidConfiguration
+from conan import ConanFile
+from conan.tools.gnu import Autotools, AutotoolsToolchain, AutotoolsDeps
+from conan.errors import ConanInvalidConfiguration
+from conan.tools.layout import basic_layout
+from conan.tools.apple import XCRun
+from conan.tools.files import copy, get, replace_in_file, rmdir, rm
+from conan.tools.build import cross_building
+from conan.tools.env import VirtualBuildEnv
 import os
 
-required_conan_version = ">=1.29.1"
+required_conan_version = ">=1.52.0"
 
 
 class GccConan(ConanFile):
     name = "gcc"
-    description = "The GNU Compiler Collection includes front ends for C, " \
-                  "C++, Objective-C, Fortran, Ada, Go, and D, as well as " \
-                  "libraries for these languages (libstdc++,...). "
+    description = (
+        "The GNU Compiler Collection includes front ends for C, "
+        "C++, Objective-C, Fortran, Ada, Go, and D, as well as "
+        "libraries for these languages (libstdc++,...). "
+    )
     topics = ("gcc", "gnu", "compiler", "c", "c++")
     homepage = "https://gcc.gnu.org"
     url = "https://github.com/conan-io/conan-center-index"
     license = "GPL-3.0-only"
     settings = "os", "compiler", "arch", "build_type"
-    _autotools = None
 
-    def build_requirements(self):
-        self.build_requires("flex/2.6.4")
-
-    def _configure_autotools(self):
-        if self._autotools:
-            return self._autotools
-        self._autotools = AutoToolsBuildEnvironment(self)
-        pkgversion = 'conan GCC %s' % self.version
-        bugurl = self.url + '/issues'
-        libdir = "%s/lib/gcc/%s" % (self.package_folder, self.version)
-        args = [
-            "--enable-languages=c,c++",
-            "--disable-nls",
-            "--disable-multilib",
-            "--disable-bootstrap",
-            "--with-system-zlib",
-            "--with-gmp=%s" % self.deps_cpp_info['gmp'].rootpath,
-            '--with-mpc=%s' % self.deps_cpp_info["mpc"].rootpath,
-            "--with-mpfr=%s" % self.deps_cpp_info["mpfr"].rootpath,
-            "--without-isl",
-            "--libdir=%s" % libdir,
-            '--with-pkgversion=%s' % pkgversion,
-            "--program-suffix=-%s" % self.version,
-            "--with-bugurl=%s" % bugurl
-        ]
-        if self.settings.os == "Macos":
-            xcrun = tools.XCRun(self.settings)
-            args.extend([
-                '--with-native-system-header-dir=/usr/include',
-                "--with-sysroot={}".format(xcrun.sdk_path)
-            ])
-        self._autotools.libs = []  # otherwise causes config.log to fail finding -lmpc
+    def configure(self):
         if self.settings.compiler in ["clang", "apple-clang"]:
-            # xgcc: error: unrecognized command-line option -stdlib=libc++
-            if self.settings.compiler.libcxx == "libc++":
-                self._autotools.cxx_flags.remove("-stdlib=libc++")
-            elif self.settings.compiler.libcxx in ["libstdc++", "libstdc++11"]:
-                self._autotools.cxx_flags.remove("-stdlib=libstdc++")
-        self._autotools.configure(args=args, configure_dir=self._source_subfolder)
-        return self._autotools
-
-    @property
-    def _source_subfolder(self):
-        return "source_subfolder"
+            # Can't remove this from cxxflags with autotools - so get rid of it
+            del self.settings.compiler.libcxx
+
+    def build_requirements(self):
+        self.tool_requires("binutils/2.38")
+        self.tool_requires("flex/2.6.4")
 
     def requirements(self):
         self.requires("mpc/1.2.0")
         self.requires("mpfr/4.1.0")
-        self.requires("gmp/6.2.0")
-        self.requires("zlib/1.2.11")
+        self.requires("gmp/6.2.1")
+        self.requires("zlib/1.2.12")
+        self.requires("isl/0.24")
 
-    def configure(self):
-        if self.settings.os == "Windows":
-            raise ConanInvalidConfiguration("Windows builds aren't supported (yet), sorry")
-        if tools.cross_building(self.settings):
+    def package_id(self):
+        del self.info.settings.compiler
+
+    def validate(self):
+        if self.info.settings.os == "Windows":
+            raise ConanInvalidConfiguration(
+                "Windows builds aren't supported (yet), sorry"
+            )
+        if cross_building(self):
             raise ConanInvalidConfiguration("no cross-building support (yet), sorry")
 
-    def source(self):
-        tools.get(**self.conan_data["sources"][self.version])
-        extracted_dir = "gcc-%s" % self.version
-        os.rename(extracted_dir, self._source_subfolder)
+    def layout(self):
+        basic_layout(self, src_folder="source")
+
+    def generate(self):
+        # Ensure binutils and flex are on the path
+        buildenv = VirtualBuildEnv(self)
+        buildenv.generate()
+
+        tc = AutotoolsToolchain(self)
+        tc.configure_args.append("--enable-languages=c,c++,fortran")
+        tc.configure_args.append("--disable-nls")
+        tc.configure_args.append("--disable-multilib")
+        tc.configure_args.append("--disable-bootstrap")
+        tc.configure_args.append("--with-system-zlib")
+        tc.configure_args.append(f"--prefix={self.package_folder}")
+        tc.configure_args.append(f"--with-isl={self.deps_cpp_info['isl'].rootpath}")
+        tc.configure_args.append(f"--with-gmp={self.deps_cpp_info['gmp'].rootpath}")
+        tc.configure_args.append(f"--with-mpc={self.deps_cpp_info['mpc'].rootpath}")
+        tc.configure_args.append(f"--with-mpfr={self.deps_cpp_info['mpfr'].rootpath}")
+        tc.configure_args.append(f"--with-pkgversion=conan GCC {self.version}")
+        tc.configure_args.append(f"--program-suffix=-{self.version}")
+        tc.configure_args.append(f"--with-bugurl={self.url}/issues")
+
+        if self.info.settings.os == "Macos":
+            xcrun = XCRun(self.settings)
+            tc.configure_args.append("--with-native-system-header-dir=/usr/include")
+            tc.configure_args.append(f"--with-sysroot={xcrun.sdk_path}")
+            tc.make_args.append("BOOT_LDFLAGS=-Wl")
+            tc.make_args.append("-headerpad_max_install_names")
+        tc.generate()
+
+        deps = AutotoolsDeps(self)
+        deps.generate()
 
-    @property
-    def _make_args(self):
-        if self.settings.os == "Macos":
-            return ["BOOT_LDFLAGS=-Wl,-headerpad_max_install_names"]
-        return []
+    def source(self):
+        get(self, **self.conan_data["sources"][self.version], strip_root=True)
 
     def build(self):
         # If building on x86_64, change the default directory name for 64-bit libraries to "lib":
-        libdir = "%s/lib/gcc/%s" % (self.package_folder, self.version)
-        tools.replace_in_file(os.path.join(self.source_folder,
-                                           self._source_subfolder, "gcc", "config", "i386", "t-linux64"),
-                              "m64=../lib64", "m64=../lib", strict=False)
+        replace_in_file(
+            self,
+            os.path.join(self.source_folder, "gcc", "config", "i386", "t-linux64"),
+            "m64=../lib64",
+            "m64=../lib",
+            strict=False,
+        )
+
         # Ensure correct install names when linking against libgcc_s;
         # see discussion in https://github.com/Homebrew/legacy-homebrew/pull/34303
-        tools.replace_in_file(os.path.join(self.source_folder,
-                                           self._source_subfolder, "libgcc", "config", "t-slibgcc-darwin"),
-                              "@shlib_slibdir@", libdir, strict=False)
-        autotools = self._configure_autotools()
-        autotools.make(args=self._make_args)
-
-    def package_id(self):
-        del self.info.settings.compiler
+        replace_in_file(
+            self,
+            os.path.join(self.source_folder, "libgcc", "config", "t-slibgcc-darwin"),
+            "@shlib_slibdir@",
+            os.path.join(self.package_folder, "lib"),
+            strict=False,
+        )
+
+        autotools = Autotools(self)
+        autotools.configure()
+        autotools.make()
 
     def package(self):
-        autotools = self._configure_autotools()
-        if self.settings.build_type == "Debug":
-            autotools.install(args=self._make_args)
-        else:
-            autotools.make(args=["install-strip"] + self._make_args)
-        tools.rmdir(os.path.join(self.package_folder, "share"))
-        tools.remove_files_by_mask(self.package_folder, "*.la")
-        self.copy(pattern="COPYING*", dst="licenses", src=self._source_subfolder)
+        autotools = Autotools(self)
+        autotools.make(target="install-strip")
+
+        rmdir(self, os.path.join(self.package_folder, "share"))
+        rm(self, "*.la", self.package_folder, recursive=True)
+        copy(
+            self,
+            pattern="COPYING*",
+            dst=os.path.join(self.package_folder, "licenses"),
+            src=self.source_folder,
+            keep_path=False,
+        )
 
     def package_info(self):
+        if self.info.settings.os in ["Linux", "FreeBSD"]:
+            self.cpp_info.system_libs.append("m")
+            self.cpp_info.system_libs.append("rt")
+            self.cpp_info.system_libs.append("pthread")
+            self.cpp_info.system_libs.append("dl")
+
         bindir = os.path.join(self.package_folder, "bin")
-        self.output.info("Appending PATH env var with : " + bindir)
-        self.env_info.PATH.append(bindir)
+        self.output.info("Prepending PATH env var with: " + bindir)
+        self.buildenv_info.prepend_path("PATH", bindir)
+
+        cc = os.path.join(bindir, f"gcc-{self.version}")
+        self.output.info("Creating CC env var with: " + cc)
+        self.buildenv_info.define("CC", cc)
+
+        cxx = os.path.join(bindir, f"g++-{self.version}")
+        self.output.info("Creating CXX env var with: " + cxx)
+        self.buildenv_info.define("CXX", cxx)
+
+        fc = os.path.join(bindir, f"gfortran-{self.version}")
+        self.output.info("Creating FC env var with: " + fc)
+        self.buildenv_info.define("FC", fc)
+
+        ar = os.path.join(bindir, f"gcc-ar-{self.version}")
+        self.output.info("Creating AR env var with: " + ar)
+        self.buildenv_info.define("AR", ar)
 
-        cc = os.path.join(bindir, "gcc-%s" % self.version)
-        self.output.info("Creating CC env var with : " + cc)
-        self.env_info.CC = cc
+        nm = os.path.join(bindir, f"gcc-nm-{self.version}")
+        self.output.info("Creating NM env var with: " + nm)
+        self.buildenv_info.define("NM", nm)
 
-        cxx = os.path.join(bindir, "g++-%s" % self.version)
-        self.output.info("Creating CXX env var with : " + cxx)
-        self.env_info.CXX = cxx
+        ranlib = os.path.join(bindir, f"gcc-ranlib-{self.version}")
+        self.output.info("Creating RANLIB env var with: " + ranlib)
+        self.buildenv_info.define("RANLIB", ranlib)

recipes/gcc/all/test_package/conanfile.py

@@ -1,34 +1,81 @@
-from conans import ConanFile, tools
 import os
+import shutil
+from conan import ConanFile
+from conan.tools.build import cross_building
+from conan.tools.env import VirtualBuildEnv, VirtualRunEnv
 
 
-class TestPackageConan(ConanFile):
+class GccTestConan(ConanFile):
     settings = "os", "compiler", "build_type", "arch"
-    generators = "cmake"
+
+    @property
+    def file_io(self):
+        return {
+            "c": {
+                "compiler": "$CC",
+                "src": os.path.join(self.source_folder, "hello.c"),
+                "bin": os.path.join(self.build_folder, "hello_c"),
+            },
+            "cpp": {
+                "compiler": "$CXX",
+                "src": os.path.join(self.source_folder, "hello.cpp"),
+                "bin": os.path.join(self.build_folder, "hello_cpp"),
+            },
+            "fortran": {
+                "compiler": "$FC",
+                "src": os.path.join(self.source_folder, "hello.f90"),
+                "bin": os.path.join(self.build_folder, "hello_f90"),
+            },
+        }
+
+    def generate(self):
+        buildenv = VirtualBuildEnv(self)
+        buildenv.generate()
+
+        runenv = VirtualRunEnv(self)
+        runenv.generate()
+
+    def build(self):
+        self.run("echo PATH: $PATH")
+        for language, files in self.file_io.items():
+            self.output.info(f"Testing build using {language} compiler")
+            # Confirm compiler is propagated to env
+            envvar = files["compiler"].split("$")[1]
+            self.run(f"echo {envvar}: {files['compiler']}", env="conanbuild")
+            self.run(f"{files['compiler']} --version", env="conanbuild")
+            self.run(f"{files['compiler']} -dumpversion", env="conanbuild")
+
+            # Confirm files can be compiled
+            self.run(
+                f"{files['compiler']} {files['src']} -o {files['bin']}",
+                env="conanbuild",
+            )
+            self.output.info(f"Successfully built {files['bin']}")
 
     def test(self):
         def chmod_plus_x(name):
-            if os.name == 'posix':
+            if os.name == "posix":
                 os.chmod(name, os.stat(name).st_mode | 0o111)
 
-        cc = self.deps_env_info["gcc"].CC
-        cxx = self.deps_env_info["gcc"].CXX
-        hello_c = os.path.join(self.source_folder, "hello.c")
-        hello_cpp = os.path.join(self.source_folder, "hello.cpp")
-        self.run("%s --version" % cc, run_environment=True)
-        self.run("%s --version" % cxx, run_environment=True)
-        self.run("%s -dumpversion" % cc, run_environment=True)
-        self.run("%s -dumpversion" % cxx, run_environment=True)
-        self.run("%s %s -o hello_c" % (cc, hello_c), run_environment=True)
-        self.run("%s %s -o hello_cpp" % (cxx, hello_cpp), run_environment=True)
-        if not tools.cross_building(self.settings):
-            chmod_plus_x("hello_c")
-            chmod_plus_x("hello_cpp")
-            self.run("./hello_c", run_environment=True)
-            self.run("./hello_cpp", run_environment=True)
-        if tools.which("readelf"):
-            self.run("readelf -l hello_c", run_environment=True)
-            self.run("readelf -l hello_cpp", run_environment=True)
-        if tools.which("otool"):
-            self.run("otool -L hello_c", run_environment=True)
-            self.run("otool -L hello_cpp", run_environment=True)
+        for language, files in self.file_io.items():
+            self.output.info(f"Testing application built using {language} compiler")
+            if not cross_building(self):
+                chmod_plus_x(f"{files['bin']}")
+
+                if self.settings.os == "Linux":
+                    if shutil.which("readelf"):
+                        self.run(f"readelf -l {files['bin']}", env="conanrun")
+                    else:
+                        self.output.info(
+                            "readelf is not on the PATH. Skipping readelf test."
+                        )
+
+                if self.settings.os == "Macos":
+                    if shutil.which("otool"):
+                        self.run(f"otool -L {files['bin']}", env="conanrun")
+                    else:
+                        self.output.info(
+                            "otool is not on the PATH. Skipping otool test."
+                        )
+
+                self.run(f"{files['bin']}", env="conanrun")

recipes/gcc/all/test_package/hello.c

@@ -2,7 +2,7 @@
 
 int main()
 {
-    puts("Hello, World!\n");
+    puts(" gcc: Hello, World!");
     return 0;
 }
 

recipes/gcc/all/test_package/hello.cpp

@@ -2,7 +2,7 @@
 
 int main()
 {
-    std::cout << "Hello, World!\n";
+    std::cout << " g++: Hello, World!\n";
     return 0;
 }
 

recipes/gcc/all/test_package/hello.f90

@@ -0,0 +1,4 @@
+program hello
+  implicit none
+  write(*,*) 'gfortran: Hello, World!'
+end program hello