summaryrefslogtreecommitdiff
path: root/src/rebuild.cc
blob: 3e0e78d50ec51959f1376f1dfc654df5561034ad (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
// -*- c++ -*-
// Distributed under the BSD 2-Clause License.
// See accompanying file LICENSE for details.
#include "rebuild.h"

#include <iostream>
#include <filesystem>
#include <algorithm>
#include <source_location>

#include "configure.h"
#include "libctor.h"
#include "tasks.h"
#include "build.h"
#include "execute.h"

std::array<BuildConfigurationEntry, 1024> configFiles;
std::size_t numConfigFiles{0};

int reg(BuildConfigurations (*cb)(const Settings&),
        const std::source_location location)
{
	// NOTE: std::cout cannot be used here
	if(numConfigFiles >= configFiles.size())
	{
		fprintf(stderr, "Max %d build configurations currently supported.\n",
		        (int)configFiles.size());
		exit(1);
	}

	configFiles[numConfigFiles].file = location.file_name();
	configFiles[numConfigFiles].cb = cb;
	++numConfigFiles;

	return 0;
}

int reg(const char* location)
{
	// NOTE: std::cout cannot be used here
	if(numConfigFiles >= configFiles.size())
	{
		fprintf(stderr, "Max %d build configurations currently supported.\n",
		        (int)configFiles.size());
		exit(1);
	}

	configFiles[numConfigFiles].file = location;
	configFiles[numConfigFiles].cb =
		[](const Settings&){ return std::vector<BuildConfiguration>{}; };
	++numConfigFiles;

	return 0;
}

int unreg(const char* location)
{
	std::size_t found{0};
	for(std::size_t i = 0; i < numConfigFiles;)
	{
		if(std::string(location) == configFiles[i].file)
		{
			++found;
			for(std::size_t j = i; j < numConfigFiles; ++j)
			{
				configFiles[j] = configFiles[j + 1];
			}
			--numConfigFiles;
		}
		else
		{
			++i;
		}
	}

	for(std::size_t i = 0; i < numExternalConfigFiles;)
	{
		if(std::string(location) == externalConfigFiles[i].file)
		{
			++found;
			for(std::size_t j = i; j < numExternalConfigFiles; ++j)
			{
				externalConfigFiles[j] = externalConfigFiles[j + 1];
			}
			--numExternalConfigFiles;
		}
		else
		{
			++i;
		}
	}

	return found;
}

std::array<ExternalConfigurationEntry, 1024> externalConfigFiles;
std::size_t numExternalConfigFiles{0};

int reg(ExternalConfigurations (*cb)(const Settings&),
        const std::source_location location)
{
	// NOTE: std::cout cannot be used here
	if(numExternalConfigFiles >= externalConfigFiles.size())
	{
		fprintf(stderr, "Max %d external configurations currently supported.\n",
		        (int)externalConfigFiles.size());
		exit(1);
	}

	externalConfigFiles[numExternalConfigFiles].file = location.file_name();
	externalConfigFiles[numExternalConfigFiles].cb = cb;
	++numExternalConfigFiles;

	return 0;
}

namespace
{
bool contains(const std::vector<Source>& sources, const std::string& file)
{
	for(const auto& source : sources)
	{
		if(source.file == file)
		{
			return true;
		}
	}

	return false;
}
}

bool recompileCheck(const Settings& global_settings, int argc, char* argv[],
                    bool relaunch_allowed)
{
	using namespace std::string_literals;

	if(global_settings.verbose > 1)
	{
		std::cout << "Recompile check (" << numConfigFiles << "):\n";
	}

	BuildConfiguration config;

	config.name = "ctor";
	config.flags.cxxflags =
		std::vector<std::string>({ "-s", "-O3", "-std=c++20" });
	if(hasConfiguration(cfg::ctor_includedir))
	{
		config.flags.cxxflags.push_back("-I"s + getConfiguration(cfg::ctor_includedir));
	}
	if(hasConfiguration(cfg::ctor_libdir))
	{
		config.flags.ldflags.push_back("-L"s + getConfiguration(cfg::ctor_libdir));
	}
	config.flags.ldflags.push_back("-lctor");
	config.flags.ldflags.push_back("-pthread");


	Settings settings{global_settings};
	settings.verbose = -1; // Make check completely silent.
	settings.builddir += "/ctor"; // override builddir to use ctor subdir

	{
		std::filesystem::path buildfile  = settings.builddir;
		std::filesystem::path currentfile = argv[0];
		config.target = std::filesystem::relative(currentfile, buildfile).string();
	}

	if(std::filesystem::exists(configurationFile))
	{
		config.sources.push_back(configurationFile.string());
	}

	for(std::size_t i = 0; i < numConfigFiles; ++i)
	{
		std::string location = configFiles[i].file;
		if(global_settings.verbose > 1)
		{
			std::cout << " - " << location << "\n";
		}

		// Ensure that files containing multiple configurations are only added once.
		if(!contains(config.sources, location))
		{
			config.sources.push_back(location);
		}
	}

	for(std::size_t i = 0; i < numExternalConfigFiles; ++i)
	{
		std::string location = externalConfigFiles[i].file;
		if(global_settings.verbose > 1)
		{
			std::cout << " - " << location << "\n";
		}

		// Ensure that files containing multiple configurations are only added once.
		if(!contains(config.sources, location))
		{
			config.sources.push_back(location);
		}
	}

	auto tasks = taskFactory({config}, settings, {});

	for(auto task : tasks)
	{
		if(task->registerDepTasks(tasks))
		{
			return false;
		}
	}

	// Find out if reconfigure is needed
	bool reconfigure{false};
	for(auto task : tasks)
	{
		if(task->dirty() &&
		   task->source() != "" && // only look at source files
		   task->source() != "configuration.cc") // don't reconfigure if only configuration.cc is changed.
		{
			reconfigure |= true;
		}
	}

	auto dirty_tasks = build(settings, "ctor", tasks, true); // dryrun
	if(dirty_tasks)
	{
		std::cout << "Rebuilding config.\n";
		auto ret = build(settings, "ctor", tasks); // run for real
		if(ret != 0)
		{
			return ret;
		}
	}

	if(reconfigure)
	{
		std::vector<std::string> args;
		args.push_back("reconfigure");
		if(!relaunch_allowed)
		{
			args.push_back("--no-rerun");
		}
		for(int i = 1; i < argc; ++i)
		{
			args.push_back(argv[i]);
		}
		auto ret = execute(argv[0], args);
		//if(ret != 0)
		{
			exit(ret);
		}

	}

	return dirty_tasks;
}