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#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;
}
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