summaryrefslogtreecommitdiff
path: root/src/configure.cc
diff options
context:
space:
mode:
Diffstat (limited to 'src/configure.cc')
-rw-r--r--src/configure.cc301
1 files changed, 301 insertions, 0 deletions
diff --git a/src/configure.cc b/src/configure.cc
new file mode 100644
index 0000000..ab2f837
--- /dev/null
+++ b/src/configure.cc
@@ -0,0 +1,301 @@
+#include "configure.h"
+
+#include <iostream>
+#include <filesystem>
+#include <fstream>
+
+#include <getoptpp/getoptpp.hpp>
+
+#include "settings.h"
+#include "execute.h"
+#include "libcppbuild.h"
+#include "tasks.h"
+
+std::filesystem::path configurationFile("configuration.cc");
+std::filesystem::path configHeaderFile("config.h");
+
+const std::map<std::string, std::string> default_configuration{};
+const std::map<std::string, std::string>& __attribute__((weak)) configuration()
+{
+ return default_configuration;
+}
+
+bool hasConfiguration(const std::string& key)
+{
+ const auto& c = configuration();
+ return c.find(key) != c.end();
+}
+
+const std::string& getConfiguration(const std::string& key,
+ const std::string& defaultValue)
+{
+ const auto& c = configuration();
+ if(hasConfiguration(key))
+ {
+ return c.at(key);
+ }
+
+ return defaultValue;
+}
+
+std::string locate(const std::string& arch, const std::string& app)
+{
+ std::string path_env = std::getenv("PATH");
+ std::cout << path_env << "\n";
+
+ std::string program = app;
+ if(!arch.empty())
+ {
+ program = arch + "-" + app;
+ }
+ std::cout << "Looking for: " << program << "\n";
+ std::vector<std::string> paths;
+
+ {
+ std::stringstream ss(path_env);
+ std::string path;
+ while (std::getline(ss, path, ':'))
+ {
+ paths.push_back(path);
+ }
+ }
+ for(const auto& path_str : paths)
+ {
+ std::filesystem::path path(path_str);
+ auto prog_path = path / program;
+ if(std::filesystem::exists(prog_path))
+ {
+ std::cout << "Found file " << app << " in path: " << path << "\n";
+ auto perms = std::filesystem::status(prog_path).permissions();
+ if((perms & std::filesystem::perms::owner_exec) != std::filesystem::perms::none)
+ {
+ std::cout << " - executable by owner\n";
+ }
+ if((perms & std::filesystem::perms::group_exec) != std::filesystem::perms::none)
+ {
+ std::cout << " - executable by group\n";
+ }
+ if((perms & std::filesystem::perms::others_exec) != std::filesystem::perms::none)
+ {
+ std::cout << " - executable by others\n";
+ }
+
+ return prog_path.string();
+ }
+ }
+
+ std::cerr << "Could not locate " << app << " for the " << arch << " architecture\n";
+ exit(1);
+ return {};
+}
+
+int configure(int argc, char* argv[])
+{
+ Settings settings;
+
+ settings.builddir = "build";
+
+ std::string cmd_str;
+ for(int i = 0; i < argc; ++i)
+ {
+ if(i > 0)
+ {
+ cmd_str += " ";
+ }
+ cmd_str += argv[i];
+ }
+
+ dg::Options opt;
+ int key{128};
+
+ std::string build_arch;
+ std::string build_path;
+ std::string host_arch;
+ std::string host_path;
+ std::string cc_prog = "gcc";
+ std::string cxx_prog = "g++";
+ std::string ar_prog = "ar";
+ std::string ld_prog = "ld";
+
+ opt.add("build-dir", required_argument, 'b',
+ "Set output directory for build files (default: '" +
+ settings.builddir + "').",
+ [&]() {
+ settings.builddir = optarg;
+ return 0;
+ });
+
+ opt.add("verbose", no_argument, 'v',
+ "Be verbose. Add multiple times for more verbosity.",
+ [&]() {
+ settings.verbose++;
+ return 0;
+ });
+
+ opt.add("cc", required_argument, key++,
+ "Use specified c-compiler instead of gcc.",
+ [&]() {
+ cc_prog = optarg;
+ return 0;
+ });
+
+ opt.add("cxx", required_argument, key++,
+ "Use specified c++-compiler instead of g++.",
+ [&]() {
+ cxx_prog = optarg;
+ return 0;
+ });
+
+ opt.add("ar", required_argument, key++,
+ "Use specified archiver instead of ar.",
+ [&]() {
+ ar_prog = optarg;
+ return 0;
+ });
+
+ opt.add("ld", required_argument, key++,
+ "Use specified linker instead of ld.",
+ [&]() {
+ ld_prog = optarg;
+ return 0;
+ });
+
+ opt.add("build", required_argument, key++,
+ "Configure for building on specified architecture.",
+ [&]() {
+ build_arch = optarg;
+ return 0;
+ });
+
+ opt.add("build-path", required_argument, key++,
+ "Set path to build tool-chain.",
+ [&]() {
+ build_path = optarg;
+ return 0;
+ });
+
+ opt.add("host", required_argument, key++,
+ "Cross-compile to build programs to run on specified architecture.",
+ [&]() {
+ host_arch = optarg;
+ return 0;
+ });
+
+ opt.add("host-path", required_argument, key++,
+ "Set path to cross-compile tool-chain.",
+ [&]() {
+ host_path = optarg;
+ return 0;
+ });
+
+ opt.add("help", no_argument, 'h',
+ "Print this help text.",
+ [&]() {
+ std::cout << "configure usage stuff\n";
+ opt.help();
+ exit(0);
+ return 0;
+ });
+
+ opt.process(argc, argv);
+
+ if(host_arch.empty())
+ {
+ host_arch = build_arch;
+ }
+
+ auto tasks = getTasks(settings);
+/*
+ bool needs_cpp{false};
+ bool needs_c{false};
+ bool needs_ar{false};
+ bool needs_asm{false};
+ for(const auto& task :tasks)
+ {
+ switch(task->sourceLanguage())
+ {
+ case Language::Auto:
+ std::cerr << "TargetLanguage not deduced!\n";
+ exit(1);
+ break;
+ case Language::C:
+ needs_cpp = false;
+ break;
+ case Language::Cpp:
+ needs_c = true;
+ break;
+ case Language::Asm:
+ needs_asm = true;
+ break;
+ }
+ }
+*/
+ auto cc_env = getenv("CC");
+ if(cc_env)
+ {
+ cmd_str = std::string("CC=") + cc_env + " " + cmd_str;
+ cc_prog = cc_env;
+ }
+
+ auto cxx_env = getenv("CXX");
+ if(cxx_env)
+ {
+ cmd_str = std::string("CXX=") + cxx_env + " " + cmd_str;
+ cxx_prog = cxx_env;
+ }
+
+ auto ar_env = getenv("AR");
+ if(ar_env)
+ {
+ cmd_str = std::string("AR=") + ar_env + " " + cmd_str;
+ ar_prog = ar_env;
+ }
+
+ auto ld_env = getenv("LD");
+ if(ld_env)
+ {
+ cmd_str = std::string("LD=") + ld_env + " " + cmd_str;
+ ld_prog = ld_env;
+ }
+
+ std::string host_cc = locate(host_arch, cc_prog);
+ std::string host_cxx = locate(host_arch, cxx_prog);
+ std::string host_ar = locate(host_arch, ar_prog);
+ std::string host_ld = locate(host_arch, ld_prog);
+ std::string build_cc = locate(build_arch, cc_prog);
+ std::string build_cxx = locate(build_arch, cxx_prog);
+ std::string build_ar = locate(build_arch, ar_prog);
+ std::string build_ld = locate(build_arch, ld_prog);
+
+ std::cout << "Writing results to: " << configurationFile.string() << "\n";
+ {
+ std::ofstream istr(configurationFile);
+ istr << "#include \"libcppbuild.h\"\n\n";
+ istr << "const std::map<std::string, std::string>& configuration()\n";
+ istr << "{\n";
+ istr << " static std::map<std::string, std::string> c =\n";
+ istr << " {\n";
+ istr << " { \"cmd\", \"" << cmd_str << "\" },\n";
+ istr << " { \"" << cfg::builddir << "\", \"" << settings.builddir << "\" },\n";
+ istr << " { \"" << cfg::host_cc << "\", \"" << host_cc << "\" },\n";
+ istr << " { \"" << cfg::host_cxx << "\", \"" << host_cxx << "\" },\n";
+ istr << " { \"" << cfg::host_ar << "\", \"" << host_ar << "\" },\n";
+ istr << " { \"" << cfg::host_ld << "\", \"" << host_ld << "\" },\n";
+ istr << " { \"" << cfg::build_cc << "\", \"" << build_cc << "\" },\n";
+ istr << " { \"" << cfg::build_cxx << "\", \"" << build_cxx << "\" },\n";
+ istr << " { \"" << cfg::build_ar << "\", \"" << build_ar << "\" },\n";
+ istr << " { \"" << cfg::build_ld << "\", \"" << build_ld << "\" },\n";
+ istr << " };\n";
+ istr << " return c;\n";
+ istr << "}\n";
+ }
+
+ {
+ std::ofstream istr(configHeaderFile);
+ istr << "#pragma once\n\n";
+ istr << "#define HAS_FOO 1\n";
+ istr << "//#define HAS_BAR 1\n";
+ }
+
+ return 0;
+}