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Author Topic: [ANN] CivicNet - CivicLight PoW+PoS | Mainnet is LIVE! | CPU Mining  (Read 581 times)
CivicLight (OP)
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July 16, 2026, 04:41:29 PM
 #41

Is there a build for the newer system? I am getting the following error on my 26.04 Ubuntu: ./civicnet-qt: error while loading shared libraries: libfmt.so.8: cannot open shared object file: No such file or directory. How do I correct this error?


Thanks for reporting this!

This error happens because our binary was compiled against libfmt version 8, but newer Ubuntu releases (like 24.04+) ship with a newer version of libfmt by default, which isn't backward-compatible at the shared library level.

You have a few options to fix this on your end:

Option 1 - Install libfmt8 directly (if available in your repos):
```
sudo apt install libfmt8
```

Option 2 - If libfmt8 isn't available in your package manager, you can create a symlink to your existing newer libfmt:
```
# First, find which version you have:
find / -name "libfmt.so*" 2>/dev/null

# Then symlink it (adjust the version number to match what you found):
sudo ln -s /usr/lib/x86_64-linux-gnu/libfmt.so.9 /usr/lib/x86_64-linux-gnu/libfmt.so.8
sudo ldconfig
```
Note: this works in most cases since libfmt maintains good backward compatibility, but isn't 100% guaranteed depending on the exact API used.

Option 3 - Build from source instead, which will link against whatever libfmt version is available on your system:
```
git clone https://github.com/CivicLight/CivicNet.git
cd CivicNet
./autogen.sh && ./configure && make
```

We'll look into providing a statically-linked build in a future release to avoid this kind of dependency mismatch on newer distros. Thanks again for flagging it!
sdnz
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July 16, 2026, 11:05:20 PM
 #42

It seems still cannot find peer with new binary. Is the seed node running with new release yet?  Grin
Firsttime13
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July 16, 2026, 11:19:06 PM
 #43

Is there a build for the newer system? I am getting the following error on my 26.04 Ubuntu: ./civicnet-qt: error while loading shared libraries: libfmt.so.8: cannot open shared object file: No such file or directory. How do I correct this error?


Thanks for reporting this!

This error happens because our binary was compiled against libfmt version 8, but newer Ubuntu releases (like 24.04+) ship with a newer version of libfmt by default, which isn't backward-compatible at the shared library level.

You have a few options to fix this on your end:

Option 1 - Install libfmt8 directly (if available in your repos):
```
sudo apt install libfmt8
```

Option 2 - If libfmt8 isn't available in your package manager, you can create a symlink to your existing newer libfmt:
```
# First, find which version you have:
find / -name "libfmt.so*" 2>/dev/null

# Then symlink it (adjust the version number to match what you found):
sudo ln -s /usr/lib/x86_64-linux-gnu/libfmt.so.9 /usr/lib/x86_64-linux-gnu/libfmt.so.8
sudo ldconfig
```
Note: this works in most cases since libfmt maintains good backward compatibility, but isn't 100% guaranteed depending on the exact API used.

Option 3 - Build from source instead, which will link against whatever libfmt version is available on your system:
```
git clone https://github.com/CivicLight/CivicNet.git
cd CivicNet
./autogen.sh && ./configure && make
```

We'll look into providing a statically-linked build in a future release to avoid this kind of dependency mismatch on newer distros. Thanks again for flagging it!


Under option 3, here is the error I get when trying the make cmd: make: *** No targets specified and no makefile found.  Stop.
CivicLight (OP)
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Today at 02:27:12 PM
 #44

It seems still cannot find peer with new binary. Is the seed node running with new release yet?  Grin

Update: Our node is now running the correct pchMessageStart values (matching commit 4c527e8 / V1.0.1).

Thanks for flagging this - you were right, our production node was temporarily running on the older parameters while we handled some infrastructure work. This has now been corrected without any chain reset, so the network should be consistent going forward.

Please try connecting again:
addnode=103.180.165.99:9333

Regarding the build issue from your second question ("No targets specified and no makefile found") - this happens when ./autogen.sh or ./configure didn't complete successfully before running make. Could you scroll up in your terminal and check if either of those steps printed any errors? Common causes are missing build dependencies (autoconf, libtool, pkg-config, or the boost/berkeley-db dev packages). If you can share the output from ./autogen.sh && ./configure, we can help pinpoint what's missing.
CivicLight (OP)
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Today at 06:04:03 PM
 #45

Update: Windows Wallet (v1.0.1) is now available!

Following up on the pchMessageStart fix and the Windows build questions from earlier - we've published an updated release with a proper Windows GUI wallet build.

Download: https://github.com/CivicLight/CivicNet/releases/tag/V1.0.1

What's included:
- civicnet-qt.exe - standalone Windows GUI wallet, no external dependencies needed (statically linked)
- Includes the pchMessageStart fix (magic bytes now correctly match the network)
- New installs will automatically connect to our official node - no manual addnode setup required
- Fixed wallet ticker (now correctly shows CIVIC) and application icon

Linux binaries are also available in the same release. For the earlier libfmt.so.8 error on Linux, please see the fix options in our previous reply above (installing libfmt8, symlinking, or building from source).

Let us know if you run into any issues!
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