GCC (GNAT) - Revision history

Jelleke: Add section about Ada 83 compatibility in GNAT and remove some unnecessary stuff

2025-05-18T09:33:48Z

Add section about Ada 83 compatibility in GNAT and remove some unnecessary stuff

← Older revision		Revision as of 11:33, 18 May 2025
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	GNAT was initially released separately from the main GCC sources. On October 2, 2001, the GNAT sources were contributed to the GCC Concurrent Versions System repository.<ref>[https://gcc.gnu.org/ml/gcc-cvs/2001-10/msg00028.html GCC CVS mailing list archive] "New language: Ada"</ref> The last version to be released separately was GNAT 3.15p, based on GCC 2.8.1, on October 2, 2002. Starting with GCC 3.4, on major platforms the official GCC release is able to pass 100% of the [[Ada Conformity Assessment Test Suite\|ACATS]] Ada tests included in the GCC testsuite. By GCC 4.0, more exotic platforms were also able to pass 100% of the ACATS tests.		GNAT was initially released separately from the main GCC sources. On October 2, 2001, the GNAT sources were contributed to the GCC Concurrent Versions System repository.<ref>[https://gcc.gnu.org/ml/gcc-cvs/2001-10/msg00028.html GCC CVS mailing list archive] "New language: Ada"</ref> The last version to be released separately was GNAT 3.15p, based on GCC 2.8.1, on October 2, 2002. Starting with GCC 3.4, on major platforms the official GCC release is able to pass 100% of the [[Ada Conformity Assessment Test Suite\|ACATS]] Ada tests included in the GCC testsuite. By GCC 4.0, more exotic platforms were also able to pass 100% of the ACATS tests.

			== Compatibility with Ada 83 ==
			GNAT was developed with Ada 9x in mind. However Ada has pretty good backwards compatibility so often times you'll find that Ada 83 code can compile fine on newer compilers. If you want to disallow any newer language features from Ada 95 and upwards however, you can tease GNAT into an Ada 83 compatibility mode. To do this you can pass the '''-gnat83''' switch to GCC<ref>[https://gcc.gnu.org/onlinedocs/gcc-4.8.5/gnat_ugn_unw/Compiling-Different-Versions-of-Ada.html] Ada 83 compatibility mode with the '''-gnat83''' switch in GNAT</ref>.

	== License ==		== License ==
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	== Versions ==		== Versions ==

	FSF GNAT is part of most major Linux or BSD distributions and is included in the main GCC Sources.		[https://getadanow.com/ FSF GNAT] is part of most major Linux or BSD distributions and is included in the main GCC Sources.

	GNAT Pro is a supported version of GNAT from AdaCore.		GNAT Pro is a supported version of GNAT from AdaCore.

	In addition to FSF GNAT and AdaCore's GNAT Pro, AdaCore releases additional versions (GNAT-GPL, a public older version of GNAT Pro, and GNAT GAP, a version for AdaCore's educational programs). These AdaCore versions have the runtime exceptions removed, this requires software that is linked with the standard libraries to have GPL-compatible licenses to avoid being in breach of the license agreement.

	~~'''JGNAT''' was a GNAT version that compiled from the Ada programming language to Java bytecode.~~
	'''GNAT for dotNET''' is a GNAT version that compiles from the Ada programming language to Common Language Infrastructure for the .NET Framework and the free and open source implementations Mono and Portable.NET.

	==Notes==		==Notes==

Jelleke: Add attribution to Wikipedia

2025-05-17T12:33:35Z

Add attribution to Wikipedia

← Older revision		Revision as of 14:33, 17 May 2025
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	==Notes==		==Notes==
	<references />		<references />

			{{Attribution\|Wikipedia contributors\|https://en.wikipedia.org/wiki/GNAT}}

Jelleke: Remove broken/missing references

2025-05-17T12:04:50Z

Remove broken/missing references

← Older revision		Revision as of 14:04, 17 May 2025
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	'''GNAT''' is a free software compiler for Ada which forms part of the GNU Compiler Collection (GCC). It supports all versions of the language, i.e. Ada 2012, Ada 2005, Ada 95 and Ada 83. Originally its name was an [[acronym]] that stood for '''''G'''NU '''N'''YU '''A'''da '''T'''ranslator'', but that name no longer applies. The front-end and run-time are written in Ada.		'''GNAT''' is a free software compiler for Ada which forms part of the GNU Compiler Collection (GCC). It supports all versions of the language, i.e. Ada 2012, Ada 2005, Ada 95 and Ada 83. Originally its name was an acronym that stood for '''''G'''NU '''N'''YU '''A'''da '''T'''ranslator'', but that name no longer applies. The front-end and run-time are written in Ada.

	== History ==		== History ==
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	== License ==		== License ==

	The compiler is licensed under the terms of the [[GNU General Public License#Version 3~~\|GNU GPL 3+]]~~ with GCC Runtime Library Exception.~~<ref name="GCC Runtime Library Exception"/>~~		The compiler is licensed under the terms of the GNU General Public License Version 3 with GCC Runtime Library Exception.

	All versions leading up to and including 3.15p are licensed under the GMGPL offering similar runtime exceptions. The GMGPL license is GNU GPL 2 with a linking exception that permits software with licenses that are incompatible with the GPL to be linked with the output of Ada standard generic libraries that are supplied with GNAT without breaching the license agreement.		All versions leading up to and including 3.15p are licensed under the GMGPL offering similar runtime exceptions. The GMGPL license is GNU GPL 2 with a linking exception that permits software with licenses that are incompatible with the GPL to be linked with the output of Ada standard generic libraries that are supplied with GNAT without breaching the license agreement.
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	FSF GNAT is part of most major Linux or BSD distributions and is included in the main GCC Sources.		FSF GNAT is part of most major Linux or BSD distributions and is included in the main GCC Sources.

	GNAT Pro is a supported version of GNAT from [[AdaCore]].		GNAT Pro is a supported version of GNAT from AdaCore.

	In addition to FSF GNAT and AdaCore's GNAT Pro, AdaCore releases additional versions (GNAT-GPL, a public older version of GNAT Pro, and GNAT GAP, a version for AdaCore's educational programs).~~<ref>{{Cite web\|title=GNAT Pro Comparison\|url=https://www.adacore.com/gnatpro/comparison\|access-date=2021-08-17\|website=AdaCore\|language=en}}</ref>~~ These AdaCore versions have the runtime exceptions removed, this requires software that is linked with the standard libraries to have GPL-compatible licenses to avoid being in breach of the license agreement.		In addition to FSF GNAT and AdaCore's GNAT Pro, AdaCore releases additional versions (GNAT-GPL, a public older version of GNAT Pro, and GNAT GAP, a version for AdaCore's educational programs). These AdaCore versions have the runtime exceptions removed, this requires software that is linked with the standard libraries to have GPL-compatible licenses to avoid being in breach of the license agreement.

	'''JGNAT''' was a GNAT version that compiled from the Ada programming language to Java bytecode.		'''JGNAT''' was a GNAT version that compiled from the Ada programming language to Java bytecode.

Jelleke: Add notes section

2025-05-17T08:20:05Z

Add notes section

← Older revision		Revision as of 10:20, 17 May 2025
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	'''JGNAT''' was a GNAT version that compiled from the Ada programming language to Java bytecode.		'''JGNAT''' was a GNAT version that compiled from the Ada programming language to Java bytecode.
	'''GNAT for dotNET''' is a GNAT version that compiles from the Ada programming language to Common Language Infrastructure for the .NET Framework and the free and open source implementations Mono and Portable.NET.		'''GNAT for dotNET''' is a GNAT version that compiles from the Ada programming language to Common Language Infrastructure for the .NET Framework and the free and open source implementations Mono and Portable.NET.

			==Notes==
			<references />

Jelleke: Copy and slightly edit wikipedia page on Gnat

2025-05-17T08:02:23Z

Copy and slightly edit wikipedia page on Gnat

New page

'''GNAT''' is a free software compiler for Ada which forms part of the GNU Compiler Collection (GCC). It supports all versions of the language, i.e. Ada 2012, Ada 2005, Ada 95 and Ada 83. Originally its name was an [[acronym]] that stood for '''''G'''NU '''N'''YU '''A'''da '''T'''ranslator'', but that name no longer applies. The front-end and run-time are written in Ada.

== History ==

The GNAT project started in 1992 when the United States Air Force awarded New York University (NYU) a contract to build a free software compiler for Ada to help with the Ada 9X standardization process. The 3-million-dollar contract required the use of the GNU General Public License for all development, and assigned the copyright to the Free Software Foundation. The first official validation of GNAT occurred in 1995.

GNAT was initially released separately from the main GCC sources. On October 2, 2001, the GNAT sources were contributed to the GCC Concurrent Versions System repository.<ref>[https://gcc.gnu.org/ml/gcc-cvs/2001-10/msg00028.html GCC CVS mailing list archive] "New language: Ada"</ref> The last version to be released separately was GNAT 3.15p, based on GCC 2.8.1, on October 2, 2002. Starting with GCC 3.4, on major platforms the official GCC release is able to pass 100% of the [[Ada Conformity Assessment Test Suite|ACATS]] Ada tests included in the GCC testsuite. By GCC 4.0, more exotic platforms were also able to pass 100% of the ACATS tests.

== License ==

The compiler is licensed under the terms of the [[GNU General Public License#Version 3|GNU GPL 3+]] with GCC Runtime Library Exception.<ref name="GCC Runtime Library Exception"/>

All versions leading up to and including 3.15p are licensed under the GMGPL offering similar runtime exceptions. The GMGPL license is GNU GPL 2 with a linking exception that permits software with licenses that are incompatible with the GPL to be linked with the output of Ada standard generic libraries that are supplied with GNAT without breaching the license agreement.

== Versions ==

FSF GNAT is part of most major Linux or BSD distributions and is included in the main GCC Sources.

GNAT Pro is a supported version of GNAT from [[AdaCore]].

In addition to FSF GNAT and AdaCore's GNAT Pro, AdaCore releases additional versions (GNAT-GPL, a public older version of GNAT Pro, and GNAT GAP, a version for AdaCore's educational programs).<ref>{{Cite web|title=GNAT Pro Comparison|url=https://www.adacore.com/gnatpro/comparison|access-date=2021-08-17|website=AdaCore|language=en}}</ref> These AdaCore versions have the runtime exceptions removed, this requires software that is linked with the standard libraries to have GPL-compatible licenses to avoid being in breach of the license agreement.

'''JGNAT''' was a GNAT version that compiled from the Ada programming language to Java bytecode.
'''GNAT for dotNET''' is a GNAT version that compiles from the Ada programming language to Common Language Infrastructure for the .NET Framework and the free and open source implementations Mono and Portable.NET.