This is where I’ll be uploading builds of AVR-GCC for Windows 32 and 64 bit, which will also include Binutils, AVR-LibC, AVRDUDE, Make and GDB. I’ll be trying to keep the builds up to date with the latest tool releases when I can.

The binaries are built from source on a Debian 10 virtual machine with MinGW (GCC 9.1.0 and older were built on an Arch Linux VM), apart from AVRDUDE where the pre-built binaries are obtained from the official download area. Both 32 bit and 64 bit Windows binaries are provided. There’s probably no benefit from using the 64 bit stuff, but all the cool kids are doing it so why not.
A bash script for building AVR-GCC, AVR-Binutils, AVR-LibC and AVR-GDB from source is also provided below, making it super easy to build these tools for yourself.

Included tools

Downloads

LATEST

avr-gcc-10.1.0-x64-windows.zip (97.6 MB) AVG-GCC 10.1.0 Windows x64 (64 bit) Downloaded 4872 times MD5: E30BCC2DF73A822D6E8711810FC39CC4

LATEST

avr-gcc-10.1.0-x86-windows.zip (95.9 MB) AVG-GCC 10.1.0 Windows x86 (32 bit) Downloaded 1121 times MD5: 988122A127086CD234C71E1E27067DAE

LATEST

avr-gcc-10.1.0-x64-linux.tar.bz2 (74.4 MB) AVG-GCC 10.1.0 Linux x64 Downloaded 627 times MD5: 91D86BD07EC432E311BC49112FCFC1EC

Upgrading the Arduino IDE

Upgrading the Arduino IDE is pretty easy, though there could be some incompatibilities with certain libraries. I’ve only tested this with Arduino 1.8.2.

1. Download and extract one of the downloads above
2. Navigate to your Arduino IDE folder
3. Go to hardware/tools
4. Move the avr folder somewhere else, like to your desktop (renaming the folder won’t work, Arduino has some auto-detect thing which sometimes gets confused)
5. Move the extracted folder from earlier to the tools folder and rename it to avr
6. Copy the builtin_tools_versions.txt file and etc folder from the old avr folder to the new one
7. Done! Open up the Arduino IDE, load up the Blink example, upload it to your Arduino and make sure the LED is blinking!

Known Issues

None

Build Script

This build script will install the required packages, create directories and build the tools from source. This should work on Debian 8+, Ubuntu 16.04+, CentOS 7 and maybe Arch.

Building takes about 1 hour 45 minutes on an Debian Linux virtual machine with 4 cores i5 2500K @ 4GHz and 2GB RAM.

View History

History

2020-06-15
CURRENT RELEASE
AVR-GCC updated to 10.1.0
Binutils updated to 2.34
Added GDB 9.2

2019-09-07
AVR-GCC updated to 9.2.0
AVR-LibC updated to SVN with extras

OLD	avr-gcc-9.2.0-x64-mingw.zip (56.01 MB) AVG-GCC 9.2.0 Windows x64 (64 bit) Downloaded 5710 times MD5: D0B21E18A3A7476870C319E4CDC843AC

OLD	avr-gcc-9.2.0-x86-mingw.zip (53.9 MB) AVG-GCC 9.2.0 Windows x86 (32 bit) Downloaded 1952 times MD5: DD73302A0E83379638130B1C21AC8D8E

OLD	avr-gcc-9.2.0-x64-linux.tar.bz2 (49.05 MB) AVG-GCC 9.2.0 Linux x64 Downloaded 1054 times MD5: D2FF4230AFC0E031BB026DF2735F8F47

2019-05-19
AVR-GCC updated to 9.1.0

OLD	avr-gcc-9.1.0-x64-mingw.zip (56.48 MB) AVG-GCC 9.1.0 Windows x64 (64 bit) Downloaded 2360 times MD5: 52D2BAC9AB40A7E334932F9517F84B44

OLD	avr-gcc-9.1.0-x86-mingw.zip (54.28 MB) AVG-GCC 9.1.0 Windows x86 (32 bit) Downloaded 862 times MD5: 724974F7C55068A9E45ED00D4C6ACAC7

OLD	avr-gcc-9.1.0-x64-linux.tar.bz2 (43.47 MB) AVG-GCC 9.1.0 Linux x64 Downloaded 445 times MD5: C14A06AFCFE12E22DE03C5F65CA7FF20

2019-02-28
AVR-GCC updated to 8.3.0
Binutils updated to 2.32

OLD	avr-gcc-8.3.0-x64-mingw.zip (56.13 MB) AVG-GCC 8.3.0 Windows x64 (64 bit) Downloaded 2417 times MD5: 43B7AAC7E7BAA0054E72EE81DFFC8C3D

OLD	avr-gcc-8.3.0-x86-mingw.zip (53.96 MB) AVG-GCC 8.3.0 Windows x86 (32 bit) Downloaded 19033 times MD5: 5C171253B2DA80277B36E9A1461B7840

OLD	avr-gcc-8.3.0-x64-linux.tar.bz2 (43.44 MB) AVG-GCC 8.3.0 Linux x64 Downloaded 471 times MD5: 588D0BEA4C5D21A1A06AA17625684417

2018-09-06
AVR-GCC updated to 8.2.0
Binutils updated to 2.31.1

Issues:
GCC 8 and binutils seem to be having some problems when dealing with library archives, you’ll get error messages like “unable to rename ‘core.a’; reason: File exists” when adding to library archives and “file not recognized: file truncated” linker errors.

OLD	avr-gcc-8.2.0-x64-mingw.zip (56.3 MB) AVG-GCC 8.2.0 Windows x64 (64 bit) Downloaded 5973 times MD5: E1D24CA03FA437A3A2D3B879200696E6

OLD	avr-gcc-8.2.0-x86-mingw.zip (54.14 MB) AVG-GCC 8.2.0 Windows x86 (32 bit) Downloaded 1280 times MD5: 44978C6EFD6344687AA0EFE5190B9509

OLD	avr-gcc-8.2.0-x64-linux.tar.bz2 (43.48 MB) AVG-GCC 8.2.0 Linux x64 Downloaded 545 times MD5: 9A7D31F9474626B5F033C536FA8D8244

2018-05-07
AVR-GCC updated to 8.1.0

Issues:
GCC 8 and binutils seem to be having some problems when dealing with library archives, you’ll get error messages like “unable to rename ‘core.a’; reason: File exists” when adding to library archives and “file not recognized: file truncated” linker errors.

OLD	avr-gcc-8.1.0-x64-mingw.zip (56.39 MB) AVG-GCC 8.1.0 Windows x64 (64 bit) Downloaded 2483 times MD5: B3E32E6D25EFAF2C5DB936607E21EAC8

OLD	avr-gcc-8.1.0-x86-mingw.zip (54.22 MB) AVG-GCC 8.1.0 Windows x86 (32 bit) Downloaded 1787 times MD5: 09A67C71438029AB7CB48E077E63E867

OLD	avr-gcc-8.1.0-x64-linux.tar.bz2 (48.7 MB) AVG-GCC 8.1.0 Linux x64 Downloaded 534 times MD5: FFEE037FD73135A70A34BB1985E6E3A1

2018-03-02
AVR-GCC updated to 7.3.0
Binutils updated to 2.30
Added Linux release

OLD	avr-gcc-7.3.0-x64-mingw.zip (51.22 MB) AVG-GCC 7.3.0 Windows x64 (64 bit) Downloaded 1925 times MD5: B3FFD1CA583B2E4761253AC07E6D1080

OLD	avr-gcc-7.3.0-x86-mingw.zip (48.98 MB) AVG-GCC 7.3.0 Windows x86 (32 bit) Downloaded 910 times MD5: B08A80DE43742430E888B394C6D74D53

OLD	avr-gcc-7.3.0-x64-linux.tar.bz2 (44.8 MB) AVG-GCC 7.3.0 Linux x64 Downloaded 510 times MD5: B1A57D046B9129F62CC221F9B63549A2

2017-08-22
AVR-GCC updated to 7.2.0
Binutils updated to 2.29

OLD	avr-gcc-7.2.0-x64-mingw.zip (51.03 MB) AVG-GCC 7.2.0 Windows x64 (64 bit) Downloaded 3587 times MD5: F655191707F66B7C471103C419EA1B4B

OLD	avr-gcc-7.2.0-x86-mingw.zip (48.79 MB) AVG-GCC 7.2.0 Windows x86 (32 bit) Downloaded 1872 times MD5: A21B43A0C9EE548384713C1514B4ABF7

2017-07-09
AVR-GCC 7.1.0 (R3)

OLD	avr-gcc-7.1.0-x64-mingw-r3.zip (50.8 MB) AVG-GCC 7.1.0 Windows x64 (64 bit) Downloaded 758 times MD5: 9D72AA66D9E38A6FE5904DE44B8E348F

OLD	avr-gcc-7.1.0-x86-mingw-r3.zip (48.56 MB) AVG-GCC 7.1.0 Windows x86 (32 bit) Downloaded 570 times MD5: 68E54333D4D97D57F8DDCB9FD3355924

2017-07-09
AVR-GCC 7.1.0 (R2)
Issues:
This release was missing libwinpthread-1.dll in a second location

OLD	avr-gcc-7.1.0-x64-mingw-r2.zip (50.76 MB) AVG-GCC 7.1.0 Windows x64 (64 bit) Downloaded 417 times MD5: 8AC980ED85524CA1597BB88D66E9C878

OLD	avr-gcc-7.1.0-x86-mingw-r2.zip (48.52 MB) AVG-GCC 7.1.0 Windows x86 (32 bit) Downloaded 326 times MD5: 011BDD93B70E0585DF571F1089BB7A44

2017-05-23
AVR-GCC 7.1.0 Built
Issues:
This release was missing libwinpthread-1.dll

OLD	avr-gcc-7.1.0-x64-mingw.zip (50.73 MB) AVG-GCC 7.1.0 Windows x64 (64 bit) Downloaded 848 times MD5: 7E971127E4A2DA934F1D6FB20D634894

OLD	avr-gcc-7.1.0-x86-mingw.zip (48.49 MB) AVG-GCC 7.1.0 Windows x86 (32 bit) Downloaded 607 times MD5: A2BF964134876C072B70600AF5841393

2016-04-30
AVR-GCC 6.1.0 Built
Issues:
When compiling with -ffunction-sections and any optimization level other than -O0, strings passed to a function will be stored in flash instead of RAM even though PSTR() hasn’t been used.

	puts("test"); // "test" is incorrectly stored in flash, puts() will attempt to read from RAM!

A work around is to the store the string in a variable then pass that to the function:

	static const char myString[] = "test";
	puts(myString);

[More info here]
Another work around would be to add -fno-merge-constants to the compiler options.

OLD	avr-gcc-6.1.0-x64-mingw.zip (48.41 MB) AVG-GCC 6.1.0 Windows x64 (64 bit) Downloaded 1666 times MD5: 5452908FD53FA20FBF42948445969534

OLD	avr-gcc-6.1.0-x86-mingw.zip (46.25 MB) AVG-GCC 6.1.0 Windows x86 (32 bit) Downloaded 1854 times MD5: CDD2323960812E24CC347B3C646EF4D9