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
|
/*============================================================================
CMake - Cross Platform Makefile Generator
Copyright 2000-2009 Kitware, Inc., Insight Software Consortium
Distributed under the OSI-approved BSD License (the "License");
see accompanying file Copyright.txt for details.
This software is distributed WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the License for more information.
============================================================================*/
#include "cmCMakeMinimumRequired.h"
#include "cmVersion.h"
// cmCMakeMinimumRequired
bool cmCMakeMinimumRequired
::InitialPass(std::vector<std::string> const& args, cmExecutionStatus &)
{
// Process arguments.
std::string version_string;
bool doing_version = false;
for(unsigned int i=0; i < args.size(); ++i)
{
if(args[i] == "VERSION")
{
doing_version = true;
}
else if(args[i] == "FATAL_ERROR")
{
if(doing_version)
{
this->SetError("called with no value for VERSION.");
return false;
}
doing_version = false;
}
else if(doing_version)
{
doing_version = false;
version_string = args[i];
}
else
{
this->UnknownArguments.push_back(args[i]);
}
}
if(doing_version)
{
this->SetError("called with no value for VERSION.");
return false;
}
// Make sure there was a version to check.
if(version_string.empty())
{
return this->EnforceUnknownArguments();
}
// Save the required version string.
this->Makefile->AddDefinition("CMAKE_MINIMUM_REQUIRED_VERSION",
version_string.c_str());
// Get the current version number.
unsigned int current_major = cmVersion::GetMajorVersion();
unsigned int current_minor = cmVersion::GetMinorVersion();
unsigned int current_patch = cmVersion::GetPatchVersion();
unsigned int current_tweak = cmVersion::GetTweakVersion();
// Parse at least two components of the version number.
// Use zero for those not specified.
unsigned int required_major = 0;
unsigned int required_minor = 0;
unsigned int required_patch = 0;
unsigned int required_tweak = 0;
if(sscanf(version_string.c_str(), "%u.%u.%u.%u",
&required_major, &required_minor,
&required_patch, &required_tweak) < 2)
{
cmOStringStream e;
e << "could not parse VERSION \"" << version_string << "\".";
this->SetError(e.str());
return false;
}
// Compare the version numbers.
if((current_major < required_major) ||
(current_major == required_major &&
current_minor < required_minor) ||
(current_major == required_major &&
current_minor == required_minor &&
current_patch < required_patch) ||
(current_major == required_major &&
current_minor == required_minor &&
current_patch == required_patch &&
current_tweak < required_tweak))
{
// The current version is too low.
cmOStringStream e;
e << "CMake " << version_string
<< " or higher is required. You are running version "
<< cmVersion::GetCMakeVersion();
this->Makefile->IssueMessage(cmake::FATAL_ERROR, e.str());
cmSystemTools::SetFatalErrorOccured();
return true;
}
// The version is not from the future, so enforce unknown arguments.
if(!this->EnforceUnknownArguments())
{
return false;
}
if (required_major < 2 || (required_major == 2 && required_minor < 4))
{
this->Makefile->IssueMessage(
cmake::AUTHOR_WARNING,
"Compatibility with CMake < 2.4 is not supported by CMake >= 3.0.");
this->Makefile->SetPolicyVersion("2.4");
}
else
{
this->Makefile->SetPolicyVersion(version_string.c_str());
}
return true;
}
//----------------------------------------------------------------------------
bool cmCMakeMinimumRequired::EnforceUnknownArguments()
{
if(!this->UnknownArguments.empty())
{
cmOStringStream e;
e << "called with unknown argument \""
<< this->UnknownArguments[0] << "\".";
this->SetError(e.str());
return false;
}
return true;
}
|
