Support Windows 7 #1000
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Support Windows 7 #1000
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This was referenced Jan 13, 2026
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #1000 +/- ##
==========================================
- Coverage 95.80% 92.45% -3.35%
==========================================
Files 61 71 +10
Lines 8143 9812 +1669
Branches 0 9812 +9812
==========================================
+ Hits 7801 9072 +1271
- Misses 342 451 +109
- Partials 0 289 +289 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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0blu
reviewed
Jan 13, 2026
0blu
reviewed
Jan 13, 2026
0blu
reviewed
Jan 13, 2026
0blu
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lgtm! 👍
I've tested the changes by compiling on my Windows 11 PC and executing a simple program in my Windows 7 VM.
fn main() {
let rng = SystemRandom::new();
let mut buffer = [0u8; 32];
if rng.fill(&mut buffer).is_err() {
println!("Error filling random bytes");
} else {
println!("Everything is okay");
println!("{:02X?}", buffer);
}
}cargo +nightly build --release --target x86_64-win7-windows-msvc -Zbuild-std
Used commits:
justsmth@929b3d6
justsmth/aws-lc@c7599cd
justsmth
added a commit
to aws/aws-lc
that referenced
this pull request
Jan 16, 2026
### Issues: Addresses #1997 ### Description of changes: `ProcessPrng` (from `bcryptprimitives.dll`) is only available on Windows 8+. So the current code fails at runtime on Windows 7 because `GetProcAddress` returns `NULL` and causes an `abort()`. This change defines `AWSLC_WINDOWS_7_COMPAT` when `_WIN32_WINNT <= _WIN32_WINNT_WIN7`. Then uses the existing `BCryptGenRandom` logic when it's is defined. * Related: aws/aws-lc-rs#1000 By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.
WillChilds-Klein
approved these changes
Jan 21, 2026
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| if target().ends_with("-win7-windows-msvc") { | ||
| // 0x0601 is the value of `_WIN32_WINNT_WIN7` | ||
| build_options.push(BuildOption::define("_WIN32_WINNT", "0x0601")); |
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confirmed: https://learn.microsoft.com/en-us/cpp/porting/modifying-winver-and-win32-winnt?view=msvc-170
#define _WIN32_WINNT_WIN7 0x0601 // Windows 7
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Issues:
Addresses aws/aws-lc#1997
Description of changes:
When targeting Windows 7, ensure that there's a definition for
_WIN32_WINNT).By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license and the ISC license.