Merge pull request #1717 from madebr/swig

recipes/swig/all/conandata.yml

@@ -0,0 +1,10 @@
+sources:
+  "4.0.1":
+    url: "https://github.com/swig/swig/archive/rel-4.0.1.tar.gz"
+    sha256: "2eaf6fb89d071d1be280bf995c63360b3729860c0da64948123b5d7e4cfb6cb7"
+patches:
+  "4.0.1":
+    - base_path: "source_subfolder"
+      patch_file: "patches/0001-swig-linux-library-path.patch"
+    - base_path: "source_subfolder"
+      patch_file: "patches/0002-do-not-define-SWIG_LIB_WIN_UNIX.patch"

recipes/swig/all/conanfile.py

@@ -0,0 +1,125 @@
+from conans import ConanFile, tools, AutoToolsBuildEnvironment
+from contextlib import contextmanager
+import os
+
+
+class SwigConan(ConanFile):
+    name = "swig"
+    description = "SWIG is a software development tool that connects programs written in C and C++ with a variety of high-level programming languages."
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "http://www.swig.org"
+    license = "GPL-3.0-or-later"
+    topics = ("conan", "swig", "python", "java", "wrapper")
+    exports_sources = "patches/**"
+    settings = "os", "arch", "compiler", "build_type"
+
+    _autotools = None
+
+    @property
+    def _source_subfolder(self):
+        return "source_subfolder"
+
+    def configure(self):
+        del self.settings.compiler.libcxx
+        del self.settings.compiler.cppstd
+
+    def build_requirements(self):
+        if tools.os_info.is_windows and not tools.get_env("CONAN_BASH_PATH") \
+                and tools.os_info.detect_windows_subsystem() != "msys2":
+            self.build_requires("msys2/20190524")
+        if tools.os_info.is_windows:
+            self.build_requires("winflexbison/2.5.22")
+        else:
+            self.build_requires("bison/3.5.3")
+        self.build_requires("automake/1.16.2")
+
+    def requirements(self):
+        self.requires("pcre/8.41")
+
+    def source(self):
+        tools.get(**self.conan_data["sources"][self.version])
+        os.rename("swig-rel-{}".format(self.version), self._source_subfolder)
+
+    @contextmanager
+    def _build_context(self):
+        if self.settings.compiler == "Visual Studio":
+            with tools.vcvars(self.settings):
+                env = {
+                    "CC": "{} cl -nologo".format(tools.unix_path(self.deps_user_info["automake"].compile)),
+                    "CXX": "{} cl -nologo".format(tools.unix_path(self.deps_user_info["automake"].compile)),
+                    "AR": "{} link".format(self.deps_user_info["automake"].ar_lib),
+                    "LD": "link",
+                }
+                with tools.environment_append(env):
+                    yield
+        else:
+            yield
+
+    def _configure_autotools(self):
+        if self._autotools:
+            return self._autotools
+
+        self._autotools = AutoToolsBuildEnvironment(self, win_bash=tools.os_info.is_windows)
+        deps_libpaths = self._autotools.library_paths
+        deps_libs = self._autotools.libs
+        deps_defines = self._autotools.defines
+        if self.settings.os == "Windows" and self.settings.compiler != "Visual Studio":
+            self._autotools.link_flags.append("-static")
+
+        libargs = list("-L\"{}\"".format(p) for p in deps_libpaths) + list("-l\"{}\"".format(l) for l in deps_libs)
+        args = [
+            "PCRE_LIBS={}".format(" ".join(libargs)),
+            "PCRE_CPPFLAGS={}".format(" ".join("-D{}".format(define) for define in deps_defines)),
+            "--host={}".format(self.settings.arch),
+            "--with-swiglibdir={}".format(self._swiglibdir),
+        ]
+        if self.settings.compiler == "Visual Studio":
+            self.output.warn("Visual Studio compiler cannot create ccache-swig. Disabling ccache-swig.")
+            args.append("--disable-ccache")
+            self._autotools.flags.append("-FS")
+
+        self._autotools.libs = []
+        self._autotools.library_paths = []
+
+        self._autotools.configure(args=args, configure_dir=self._source_subfolder)
+        return self._autotools
+
+    def _patch_sources(self):
+        for patch in self.conan_data["patches"][self.version]:
+            tools.patch(**patch)
+
+    def build(self):
+        self._patch_sources()
+        with tools.chdir(os.path.join(self._source_subfolder)):
+            self.run("./autogen.sh", win_bash=tools.os_info.is_windows)
+        with self._build_context():
+            autotools = self._configure_autotools()
+            autotools.make()
+
+    def package(self):
+        self.copy(pattern="LICENSE*", dst="licenses", src=self._source_subfolder)
+        self.copy(pattern="COPYRIGHT", dst="licenses", src=self._source_subfolder)
+        with self._build_context():
+            autotools = self._configure_autotools()
+            autotools.install()
+
+        if self.settings.compiler != "Visual Studio":
+            with tools.chdir(os.path.join(self.package_folder, "bin")):
+                strip = tools.get_env("STRIP") or tools.which("strip")
+                ext = ".exe" if tools.os_info.is_windows else ""
+                if strip:
+                    self.run("{} swig{}".format(strip, ext), win_bash=tools.os_info.is_windows)
+                    self.run("{} ccache-swig{}".format(strip, ext), win_bash=tools.os_info.is_windows)
+
+    @property
+    def _swiglibdir(self):
+        return os.path.join(self.package_folder, "bin", "swiglib").replace("\\", "/")
+
+    def package_info(self):
+        # FIXME: Don't set cmake_find_package name because conan cmake generators do not define SWIG_EXECUTABLE
+        # self.cpp_info.names["cmake_find_package"] = "SWIG"
+        # self.cpp_info.names["cmake_find_package_multi"] = "SWIG"
+
+        bindir = os.path.join(self.package_folder, "bin")
+        self.output.info("Appending PATH environment variable: {}".format(bindir))
+        self.env_info.PATH.append(bindir)

recipes/swig/all/patches/0001-swig-linux-library-path.patch

@@ -0,0 +1,43 @@
+--- Source/Modules/main.cxx
++++ Source/Modules/main.cxx
+@@ -879,6 +879,23 @@
+   }
+ }
+
++#if defined(HAVE_UNISTD_H)
++#include <libgen.h>
++#include <unistd.h>
++
++static String *get_exe_path(void) {
++    char buffer[PATH_MAX];
++    ssize_t nb = readlink("/proc/self/exe", buffer, PATH_MAX);
++    if (nb != -1) {
++        buffer[nb] = '\0';
++        dirname(buffer);
++        strcat(buffer, "/swiglib");
++        return NewStringWithSize(buffer, strlen(buffer));
++    }
++    return NewString(SWIG_LIB);
++}
++#endif
++
+ int SWIG_main(int argc, char *argv[], const TargetLanguageModule *tlm) {
+   char *c;
+
+@@ -938,13 +953,15 @@
+     char buf[MAX_PATH];
+     char *p;
+     if (!(GetModuleFileName(0, buf, MAX_PATH) == 0 || (p = strrchr(buf, '\\')) == 0)) {
+       *(p + 1) = '\0';
+-      SwigLib = NewStringf("%sLib", buf); // Native windows installation path
++      SwigLib = NewStringf("%sswiglib", buf); // Native windows installation path
+     } else {
+       SwigLib = NewStringf("");	// Unexpected error
+     }
+     if (Len(SWIG_LIB_WIN_UNIX) > 0)
+       SwigLibWinUnix = NewString(SWIG_LIB_WIN_UNIX); // Unix installation path using a drive letter (for msys/mingw)
++#elif defined(HAVE_UNISTD_H)
++    SwigLib = get_exe_path();
+ #else
+     SwigLib = NewString(SWIG_LIB);
+ #endif

recipes/swig/all/patches/0002-do-not-define-SWIG_LIB_WIN_UNIX.patch

@@ -0,0 +1,11 @@
+--- configure.ac
++++ configure.ac
+@@ -2728,7 +2728,7 @@
+   *-*-cygwin*) SWIG_LIB_WIN_UNIX=`cygpath --mixed "$SWIG_LIB"`;;
+   *) SWIG_LIB_WIN_UNIX="";;
+ esac
+-AC_DEFINE_UNQUOTED(SWIG_LIB_WIN_UNIX, ["$SWIG_LIB_WIN_UNIX"], [Directory for SWIG system-independent libraries (Unix install on native Windows)])
++AC_DEFINE_UNQUOTED(SWIG_LIB_WIN_UNIX, [""], [Directory for SWIG system-independent libraries (Unix install on native Windows)])
+
+ SWIG_LIB_PREINST=$ABS_SRCDIR/Lib
+ AC_SUBST(SWIG_LIB_PREINST)

recipes/swig/all/test_package/CMakeLists.txt

@@ -0,0 +1,16 @@
+cmake_minimum_required(VERSION 2.8.12)
+project(PackageTest C)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+find_package(SWIG REQUIRED)
+include(UseSWIG)
+
+swig_add_library(${PROJECT_NAME}
+    TYPE MODULE
+    LANGUAGE python
+    SOURCES
+        test.i
+        test_package.c
+)

recipes/swig/all/test_package/conanfile.py

@@ -0,0 +1,31 @@
+from conans import CMake, ConanFile, tools
+from conans.errors import ConanException
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+
+    # # FIXME: cpython is not available on CCI (yet)
+    # def build(self):
+    #     cmake = CMake(self)
+    #     cmake.configure(args=["--trace", "--trace-expand"])
+    #     cmake.build()
+    #
+    # def build_requirements(self):
+    #     self.build_requires("cpython/3.8.3")
+    #
+    # def requirements(self):
+    #     self.requires("cpython/3.8.3")
+
+    def test(self):
+        if not tools.cross_building(self.settings):
+            # # FIXME: cpython is not available on CCI (yet)
+            # with tools.chdir("lib"):
+            #     self.run("python -c \"import sys; import _PackageTest; gcd = _PackageTest.gcd(12, 16); print('gcd =', gcd); sys.exit(0 if gcd == 4 else 1)\"", run_environment=True)
+            #     self.run("python -c \"import sys; import _PackageTest; foo = _PackageTest.cvar.foo; print('foo =', foo); sys.exit(0 if foo == 3.14159265359 else 1)\"", run_environment=True)
+            testdir = os.path.dirname(os.path.realpath(__file__))
+            self.run("swig -python -outcurrentdir %s" % os.path.join(testdir, "test.i"))
+            if not os.path.isfile("example.py"):
+                raise ConanException("example.py is not created by swig")

recipes/swig/all/test_package/test.i

@@ -0,0 +1,7 @@
+/* File : example.i */
+%module example
+
+%inline %{
+extern int    gcd(int u, int v);
+extern double foo;
+%}

recipes/swig/all/test_package/test_package.c

@@ -0,0 +1,30 @@
+// Source: https://en.wikipedia.org/wiki/Binary_GCD_algorithm#Recursive_version_in_C
+int gcd(int u, int v) {
+    // simple cases (termination)
+    if (u == v)
+        return u;
+
+    if (u == 0)
+        return v;
+
+    if (v == 0)
+        return u;
+
+    // look for factors of 2
+    if (~u & 1) // u is even
+        if (v & 1) // v is odd
+            return gcd(u >> 1, v);
+        else // both u and v are even
+            return gcd(u >> 1, v >> 1) << 1;
+
+    if (~v & 1) // u is odd, v is even
+        return gcd(u, v >> 1);
+
+    // reduce larger argument
+    if (u > v)
+        return gcd((u - v) >> 1, v);
+
+    return gcd((v - u) >> 1, u);
+}
+
+double foo = 3.14159265359;

recipes/swig/config.yml

@@ -0,0 +1,3 @@
+versions:
+  "4.0.1":
+    folder: "all"