1*6c146439SlispsGNU GENERAL PUBLIC LICENSE 2*6c146439Slisps Version 2, June 1991 3*6c146439Slisps 4*6c146439Slisps Copyright (C) 1989, 1991 Free Software Foundation, Inc., <http://fsf.org/> 5*6c146439Slisps 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 6*6c146439Slisps Everyone is permitted to copy and distribute verbatim copies 7*6c146439Slisps of this license document, but changing it is not allowed. 8*6c146439Slisps 9*6c146439Slisps Preamble 10*6c146439Slisps 11*6c146439Slisps The licenses for most software are designed to take away your 12*6c146439Slispsfreedom to share and change it. By contrast, the GNU General Public 13*6c146439SlispsLicense is intended to guarantee your freedom to share and change free 14*6c146439Slispssoftware--to make sure the software is free for all its users. This 15*6c146439SlispsGeneral Public License applies to most of the Free Software 16*6c146439SlispsFoundation's software and to any other program whose authors commit to 17*6c146439Slispsusing it. (Some other Free Software Foundation software is covered by 18*6c146439Slispsthe GNU Lesser General Public License instead.) You can apply it to 19*6c146439Slispsyour programs, too. 20*6c146439Slisps 21*6c146439Slisps When we speak of free software, we are referring to freedom, not 22*6c146439Slispsprice. Our General Public Licenses are designed to make sure that you 23*6c146439Slispshave the freedom to distribute copies of free software (and charge for 24*6c146439Slispsthis service if you wish), that you receive source code or can get it 25*6c146439Slispsif you want it, that you can change the software or use pieces of it 26*6c146439Slispsin new free programs; and that you know you can do these things. 27*6c146439Slisps 28*6c146439Slisps To protect your rights, we need to make restrictions that forbid 29*6c146439Slispsanyone to deny you these rights or to ask you to surrender the rights. 30*6c146439SlispsThese restrictions translate to certain responsibilities for you if you 31*6c146439Slispsdistribute copies of the software, or if you modify it. 32*6c146439Slisps 33*6c146439Slisps For example, if you distribute copies of such a program, whether 34*6c146439Slispsgratis or for a fee, you must give the recipients all the rights that 35*6c146439Slispsyou have. You must make sure that they, too, receive or can get the 36*6c146439Slispssource code. And you must show them these terms so they know their 37*6c146439Slispsrights. 38*6c146439Slisps 39*6c146439Slisps We protect your rights with two steps: (1) copyright the software, and 40*6c146439Slisps(2) offer you this license which gives you legal permission to copy, 41*6c146439Slispsdistribute and/or modify the software. 42*6c146439Slisps 43*6c146439Slisps Also, for each author's protection and ours, we want to make certain 44*6c146439Slispsthat everyone understands that there is no warranty for this free 45*6c146439Slispssoftware. If the software is modified by someone else and passed on, we 46*6c146439Slispswant its recipients to know that what they have is not the original, so 47*6c146439Slispsthat any problems introduced by others will not reflect on the original 48*6c146439Slispsauthors' reputations. 49*6c146439Slisps 50*6c146439Slisps Finally, any free program is threatened constantly by software 51*6c146439Slispspatents. We wish to avoid the danger that redistributors of a free 52*6c146439Slispsprogram will individually obtain patent licenses, in effect making the 53*6c146439Slispsprogram proprietary. To prevent this, we have made it clear that any 54*6c146439Slispspatent must be licensed for everyone's free use or not licensed at all. 55*6c146439Slisps 56*6c146439Slisps The precise terms and conditions for copying, distribution and 57*6c146439Slispsmodification follow. 58*6c146439Slisps 59*6c146439Slisps GNU GENERAL PUBLIC LICENSE 60*6c146439Slisps TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 61*6c146439Slisps 62*6c146439Slisps 0. This License applies to any program or other work which contains 63*6c146439Slispsa notice placed by the copyright holder saying it may be distributed 64*6c146439Slispsunder the terms of this General Public License. The "Program", below, 65*6c146439Slispsrefers to any such program or work, and a "work based on the Program" 66*6c146439Slispsmeans either the Program or any derivative work under copyright law: 67*6c146439Slispsthat is to say, a work containing the Program or a portion of it, 68*6c146439Slispseither verbatim or with modifications and/or translated into another 69*6c146439Slispslanguage. (Hereinafter, translation is included without limitation in 70*6c146439Slispsthe term "modification".) Each licensee is addressed as "you". 71*6c146439Slisps 72*6c146439SlispsActivities other than copying, distribution and modification are not 73*6c146439Slispscovered by this License; they are outside its scope. The act of 74*6c146439Slispsrunning the Program is not restricted, and the output from the Program 75*6c146439Slispsis covered only if its contents constitute a work based on the 76*6c146439SlispsProgram (independent of having been made by running the Program). 77*6c146439SlispsWhether that is true depends on what the Program does. 78*6c146439Slisps 79*6c146439Slisps 1. You may copy and distribute verbatim copies of the Program's 80*6c146439Slispssource code as you receive it, in any medium, provided that you 81*6c146439Slispsconspicuously and appropriately publish on each copy an appropriate 82*6c146439Slispscopyright notice and disclaimer of warranty; keep intact all the 83*6c146439Slispsnotices that refer to this License and to the absence of any warranty; 84*6c146439Slispsand give any other recipients of the Program a copy of this License 85*6c146439Slispsalong with the Program. 86*6c146439Slisps 87*6c146439SlispsYou may charge a fee for the physical act of transferring a copy, and 88*6c146439Slispsyou may at your option offer warranty protection in exchange for a fee. 89*6c146439Slisps 90*6c146439Slisps 2. You may modify your copy or copies of the Program or any portion 91*6c146439Slispsof it, thus forming a work based on the Program, and copy and 92*6c146439Slispsdistribute such modifications or work under the terms of Section 1 93*6c146439Slispsabove, provided that you also meet all of these conditions: 94*6c146439Slisps 95*6c146439Slisps a) You must cause the modified files to carry prominent notices 96*6c146439Slisps stating that you changed the files and the date of any change. 97*6c146439Slisps 98*6c146439Slisps b) You must cause any work that you distribute or publish, that in 99*6c146439Slisps whole or in part contains or is derived from the Program or any 100*6c146439Slisps part thereof, to be licensed as a whole at no charge to all third 101*6c146439Slisps parties under the terms of this License. 102*6c146439Slisps 103*6c146439Slisps c) If the modified program normally reads commands interactively 104*6c146439Slisps when run, you must cause it, when started running for such 105*6c146439Slisps interactive use in the most ordinary way, to print or display an 106*6c146439Slisps announcement including an appropriate copyright notice and a 107*6c146439Slisps notice that there is no warranty (or else, saying that you provide 108*6c146439Slisps a warranty) and that users may redistribute the program under 109*6c146439Slisps these conditions, and telling the user how to view a copy of this 110*6c146439Slisps License. (Exception: if the Program itself is interactive but 111*6c146439Slisps does not normally print such an announcement, your work based on 112*6c146439Slisps the Program is not required to print an announcement.) 113*6c146439Slisps 114*6c146439SlispsThese requirements apply to the modified work as a whole. If 115*6c146439Slispsidentifiable sections of that work are not derived from the Program, 116*6c146439Slispsand can be reasonably considered independent and separate works in 117*6c146439Slispsthemselves, then this License, and its terms, do not apply to those 118*6c146439Slispssections when you distribute them as separate works. But when you 119*6c146439Slispsdistribute the same sections as part of a whole which is a work based 120*6c146439Slispson the Program, the distribution of the whole must be on the terms of 121*6c146439Slispsthis License, whose permissions for other licensees extend to the 122*6c146439Slispsentire whole, and thus to each and every part regardless of who wrote it. 123*6c146439Slisps 124*6c146439SlispsThus, it is not the intent of this section to claim rights or contest 125*6c146439Slispsyour rights to work written entirely by you; rather, the intent is to 126*6c146439Slispsexercise the right to control the distribution of derivative or 127*6c146439Slispscollective works based on the Program. 128*6c146439Slisps 129*6c146439SlispsIn addition, mere aggregation of another work not based on the Program 130*6c146439Slispswith the Program (or with a work based on the Program) on a volume of 131*6c146439Slispsa storage or distribution medium does not bring the other work under 132*6c146439Slispsthe scope of this License. 133*6c146439Slisps 134*6c146439Slisps 3. You may copy and distribute the Program (or a work based on it, 135*6c146439Slispsunder Section 2) in object code or executable form under the terms of 136*6c146439SlispsSections 1 and 2 above provided that you also do one of the following: 137*6c146439Slisps 138*6c146439Slisps a) Accompany it with the complete corresponding machine-readable 139*6c146439Slisps source code, which must be distributed under the terms of Sections 140*6c146439Slisps 1 and 2 above on a medium customarily used for software interchange; or, 141*6c146439Slisps 142*6c146439Slisps b) Accompany it with a written offer, valid for at least three 143*6c146439Slisps years, to give any third party, for a charge no more than your 144*6c146439Slisps cost of physically performing source distribution, a complete 145*6c146439Slisps machine-readable copy of the corresponding source code, to be 146*6c146439Slisps distributed under the terms of Sections 1 and 2 above on a medium 147*6c146439Slisps customarily used for software interchange; or, 148*6c146439Slisps 149*6c146439Slisps c) Accompany it with the information you received as to the offer 150*6c146439Slisps to distribute corresponding source code. (This alternative is 151*6c146439Slisps allowed only for noncommercial distribution and only if you 152*6c146439Slisps received the program in object code or executable form with such 153*6c146439Slisps an offer, in accord with Subsection b above.) 154*6c146439Slisps 155*6c146439SlispsThe source code for a work means the preferred form of the work for 156*6c146439Slispsmaking modifications to it. For an executable work, complete source 157*6c146439Slispscode means all the source code for all modules it contains, plus any 158*6c146439Slispsassociated interface definition files, plus the scripts used to 159*6c146439Slispscontrol compilation and installation of the executable. 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You may not copy, modify, sublicense, or distribute the Program 173*6c146439Slispsexcept as expressly provided under this License. Any attempt 174*6c146439Slispsotherwise to copy, modify, sublicense or distribute the Program is 175*6c146439Slispsvoid, and will automatically terminate your rights under this License. 176*6c146439SlispsHowever, parties who have received copies, or rights, from you under 177*6c146439Slispsthis License will not have their licenses terminated so long as such 178*6c146439Slispsparties remain in full compliance. 179*6c146439Slisps 180*6c146439Slisps 5. You are not required to accept this License, since you have not 181*6c146439Slispssigned it. However, nothing else grants you permission to modify or 182*6c146439Slispsdistribute the Program or its derivative works. These actions are 183*6c146439Slispsprohibited by law if you do not accept this License. Therefore, by 184*6c146439Slispsmodifying or distributing the Program (or any work based on the 185*6c146439SlispsProgram), you indicate your acceptance of this License to do so, and 186*6c146439Slispsall its terms and conditions for copying, distributing or modifying 187*6c146439Slispsthe Program or works based on it. 188*6c146439Slisps 189*6c146439Slisps 6. Each time you redistribute the Program (or any work based on the 190*6c146439SlispsProgram), the recipient automatically receives a license from the 191*6c146439Slispsoriginal licensor to copy, distribute or modify the Program subject to 192*6c146439Slispsthese terms and conditions. You may not impose any further 193*6c146439Slispsrestrictions on the recipients' exercise of the rights granted herein. 194*6c146439SlispsYou are not responsible for enforcing compliance by third parties to 195*6c146439Slispsthis License. 196*6c146439Slisps 197*6c146439Slisps 7. If, as a consequence of a court judgment or allegation of patent 198*6c146439Slispsinfringement or for any other reason (not limited to patent issues), 199*6c146439Slispsconditions are imposed on you (whether by court order, agreement or 200*6c146439Slispsotherwise) that contradict the conditions of this License, they do not 201*6c146439Slispsexcuse you from the conditions of this License. If you cannot 202*6c146439Slispsdistribute so as to satisfy simultaneously your obligations under this 203*6c146439SlispsLicense and any other pertinent obligations, then as a consequence you 204*6c146439Slispsmay not distribute the Program at all. For example, if a patent 205*6c146439Slispslicense would not permit royalty-free redistribution of the Program by 206*6c146439Slispsall those who receive copies directly or indirectly through you, then 207*6c146439Slispsthe only way you could satisfy both it and this License would be to 208*6c146439Slispsrefrain entirely from distribution of the Program. 209*6c146439Slisps 210*6c146439SlispsIf any portion of this section is held invalid or unenforceable under 211*6c146439Slispsany particular circumstance, the balance of the section is intended to 212*6c146439Slispsapply and the section as a whole is intended to apply in other 213*6c146439Slispscircumstances. 214*6c146439Slisps 215*6c146439SlispsIt is not the purpose of this section to induce you to infringe any 216*6c146439Slispspatents or other property right claims or to contest validity of any 217*6c146439Slispssuch claims; this section has the sole purpose of protecting the 218*6c146439Slispsintegrity of the free software distribution system, which is 219*6c146439Slispsimplemented by public license practices. Many people have made 220*6c146439Slispsgenerous contributions to the wide range of software distributed 221*6c146439Slispsthrough that system in reliance on consistent application of that 222*6c146439Slispssystem; it is up to the author/donor to decide if he or she is willing 223*6c146439Slispsto distribute software through any other system and a licensee cannot 224*6c146439Slispsimpose that choice. 225*6c146439Slisps 226*6c146439SlispsThis section is intended to make thoroughly clear what is believed to 227*6c146439Slispsbe a consequence of the rest of this License. 228*6c146439Slisps 229*6c146439Slisps 8. If the distribution and/or use of the Program is restricted in 230*6c146439Slispscertain countries either by patents or by copyrighted interfaces, the 231*6c146439Slispsoriginal copyright holder who places the Program under this License 232*6c146439Slispsmay add an explicit geographical distribution limitation excluding 233*6c146439Slispsthose countries, so that distribution is permitted only in or among 234*6c146439Slispscountries not thus excluded. In such case, this License incorporates 235*6c146439Slispsthe limitation as if written in the body of this License. 236*6c146439Slisps 237*6c146439Slisps 9. The Free Software Foundation may publish revised and/or new versions 238*6c146439Slispsof the General Public License from time to time. Such new versions will 239*6c146439Slispsbe similar in spirit to the present version, but may differ in detail to 240*6c146439Slispsaddress new problems or concerns. 241*6c146439Slisps 242*6c146439SlispsEach version is given a distinguishing version number. If the Program 243*6c146439Slispsspecifies a version number of this License which applies to it and "any 244*6c146439Slispslater version", you have the option of following the terms and conditions 245*6c146439Slispseither of that version or of any later version published by the Free 246*6c146439SlispsSoftware Foundation. If the Program does not specify a version number of 247*6c146439Slispsthis License, you may choose any version ever published by the Free Software 248*6c146439SlispsFoundation. 249*6c146439Slisps 250*6c146439Slisps 10. If you wish to incorporate parts of the Program into other free 251*6c146439Slispsprograms whose distribution conditions are different, write to the author 252*6c146439Slispsto ask for permission. For software which is copyrighted by the Free 253*6c146439SlispsSoftware Foundation, write to the Free Software Foundation; we sometimes 254*6c146439Slispsmake exceptions for this. Our decision will be guided by the two goals 255*6c146439Slispsof preserving the free status of all derivatives of our free software and 256*6c146439Slispsof promoting the sharing and reuse of software generally. 257*6c146439Slisps 258*6c146439Slisps NO WARRANTY 259*6c146439Slisps 260*6c146439Slisps 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY 261*6c146439SlispsFOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN 262*6c146439SlispsOTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES 263*6c146439SlispsPROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED 264*6c146439SlispsOR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 265*6c146439SlispsMERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS 266*6c146439SlispsTO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE 267*6c146439SlispsPROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, 268*6c146439SlispsREPAIR OR CORRECTION. 269*6c146439Slisps 270*6c146439Slisps 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 271*6c146439SlispsWILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR 272*6c146439SlispsREDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, 273*6c146439SlispsINCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING 274*6c146439SlispsOUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED 275*6c146439SlispsTO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY 276*6c146439SlispsYOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER 277*6c146439SlispsPROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE 278*6c146439SlispsPOSSIBILITY OF SUCH DAMAGES. 279*6c146439Slisps 280*6c146439Slisps END OF TERMS AND CONDITIONS 281*6c146439Slisps 282*6c146439Slisps How to Apply These Terms to Your New Programs 283*6c146439Slisps 284*6c146439Slisps If you develop a new program, and you want it to be of the greatest 285*6c146439Slispspossible use to the public, the best way to achieve this is to make it 286*6c146439Slispsfree software which everyone can redistribute and change under these terms. 287*6c146439Slisps 288*6c146439Slisps To do so, attach the following notices to the program. It is safest 289*6c146439Slispsto attach them to the start of each source file to most effectively 290*6c146439Slispsconvey the exclusion of warranty; and each file should have at least 291*6c146439Slispsthe "copyright" line and a pointer to where the full notice is found. 292*6c146439Slisps 293*6c146439Slisps {description} 294*6c146439Slisps Copyright (C) {year} {fullname} 295*6c146439Slisps 296*6c146439Slisps This program is free software; you can redistribute it and/or modify 297*6c146439Slisps it under the terms of the GNU General Public License as published by 298*6c146439Slisps the Free Software Foundation; either version 2 of the License, or 299*6c146439Slisps (at your option) any later version. 300*6c146439Slisps 301*6c146439Slisps This program is distributed in the hope that it will be useful, 302*6c146439Slisps but WITHOUT ANY WARRANTY; without even the implied warranty of 303*6c146439Slisps MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 304*6c146439Slisps GNU General Public License for more details. 305*6c146439Slisps 306*6c146439Slisps You should have received a copy of the GNU General Public License along 307*6c146439Slisps with this program; if not, write to the Free Software Foundation, Inc., 308*6c146439Slisps 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. 309*6c146439Slisps 310*6c146439SlispsAlso add information on how to contact you by electronic and paper mail. 311*6c146439Slisps 312*6c146439SlispsIf the program is interactive, make it output a short notice like this 313*6c146439Slispswhen it starts in an interactive mode: 314*6c146439Slisps 315*6c146439Slisps Gnomovision version 69, Copyright (C) year name of author 316*6c146439Slisps Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 317*6c146439Slisps This is free software, and you are welcome to redistribute it 318*6c146439Slisps under certain conditions; type `show c' for details. 319*6c146439Slisps 320*6c146439SlispsThe hypothetical commands `show w' and `show c' should show the appropriate 321*6c146439Slispsparts of the General Public License. Of course, the commands you use may 322*6c146439Slispsbe called something other than `show w' and `show c'; they could even be 323*6c146439Slispsmouse-clicks or menu items--whatever suits your program. 324*6c146439Slisps 325*6c146439SlispsYou should also get your employer (if you work as a programmer) or your 326*6c146439Slispsschool, if any, to sign a "copyright disclaimer" for the program, if 327*6c146439Slispsnecessary. Here is a sample; alter the names: 328*6c146439Slisps 329*6c146439Slisps Yoyodyne, Inc., hereby disclaims all copyright interest in the program 330*6c146439Slisps `Gnomovision' (which makes passes at compilers) written by James Hacker. 331*6c146439Slisps 332*6c146439Slisps {signature of Ty Coon}, 1 April 1989 333*6c146439Slisps Ty Coon, President of Vice 334*6c146439Slisps 335*6c146439SlispsThis General Public License does not permit incorporating your program into 336*6c146439Slispsproprietary programs. If your program is a subroutine library, you may 337*6c146439Slispsconsider it more useful to permit linking proprietary applications with the 338*6c146439Slispslibrary. If this is what you want to do, use the GNU Lesser General 339*6c146439SlispsPublic License instead of this License. 340