PR #27178 Update to C++20

Update to C++20.

58846377

Fix ostream::operator<< usage with wchar_t*.

98c31aef

try to fix time_point output operator availability check

9171d14e

add back Apple stuff and handle IOS

92b3334f

make Timestamp a separate type and implement stream insertion operato…

831ae91a

move date.h dependency into logging.cc

1e2ad83b

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20_fix

2213158b

add exception for MSVC CUDA EP build for now...

dad1617c

add wostream overloads for Timestamp operator<<

7f34d3bf

use std::filesystem::path:string instead of u8string in onnxruntime/c…

ad1aab81

don't build android from Docker in minimal build workflow

848c8b17

disable C++20 when onnxruntime_USE_CUDA is enabled for all builds, up…

2c78745f

update comment again

a035d7f0

edgchen1 commented on 2026-02-02

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20

d3393906

edgchen1 changed the title ~~[WIP] Update onnxruntime to C++20~~ Enable C++20 for more builds 67 days ago

tweak comment

06fec4fa

edgchen1 marked this pull request as ready for review 67 days ago

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20

9b1cdb19

DEBUG: CMake generate tracing

7ec3538f

try disabling module scan for Android QNN

79de47aa

Revert "DEBUG: CMake generate tracing"

2ef0bdbf

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20_fix

270f4119

edgchen1 commented on 2026-02-14

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20

ec5d52ed

add cutlass issue link

4d22c087

fs-eire commented on 2026-02-25

skottmckay commented on 2026-02-25

move cmake code around so that options and setting of CMAKE_CXX_STAND…

282545bd

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20

ee253215

edgchen1 requested a review from

skottmckay 43 days ago

edgchen1 requested a review from

fs-eire 43 days ago

fs-eire requested a review from

copilot-pull-request-reviewer 43 days ago

copilot-pull-request-reviewer commented on 2026-02-28

fs-eire dismissed these changes on 2026-02-28

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20

7cc02cf7

vitisai global_api.cc - use onnxruntime::ToUTF8String on model path

9c21b3fb

edgchen1 dismissed their stale review via 9c21b3fb 40 days ago

fs-eire dismissed these changes on 2026-03-02

edgchen1 commented on 2026-03-02

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20

f13bee29

edgchen1 dismissed their stale review via f13bee29 38 days ago

try C++20 for everything, pass /permissive to CUDA MSVC build

55436365

edgchen1 marked this pull request as draft 38 days ago

try adding /permissive another way, update CUDA_STANDARD to 20 too

1a8f8973

add CUDA language /permissive too

f2fcee0a

change GridDim::maxThreadsPerBlock and GridDim::maxElementsPerThread …

5873aee8

cutlass patch to work around error

99f245fb

move #177 warning suppression to CUDA 12.8+ section

042b504c

edgchen1 changed the title ~~Enable C++20 for more builds~~ Update to C++20 38 days ago

undo CMake code moving around

bacffa2f

break long line

b4aca518

update patch file for line length

e6297ffe

fix patch file

6d7ff32d

don't use deprecated move_iterator operator->

8dbb80f9

edgchen1 requested a review from

copilot-pull-request-reviewer 38 days ago

edgchen1 commented on 2026-03-05

copilot-pull-request-reviewer commented on 2026-03-05

try to suppress spurious stringop-overflow warning

6f801b2f

add comment

f5c4222d

try to make suppression very local

294dbd3b

indent comment and formatting

bddc3aca

set CMAKE_CXX_SCAN_FOR_MODULES in CMakeLists.txt

73019d4b

clarify comment about cxx_std_17 feature

d3b2ff95

update some lingering old CXX_STANDARD values. let's see what happens...

90b2c73a

move --diag-suppress=177 out of CUDA 12.8+ block

0d613a31

update vcpkg_helpers.py to pass module scanning option too

291f0a00

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20_fix

cfa3ea88

add 'this' to '=' lambda capture. implicit capture of 'this' with '='…

edcc9a4d

debugging - split out cuda python builds into single cuda arch builds

c99ed4eb

fix stage name

754418b6

move StatusCodeToHRESULT to its own file so we don't need to include …

d4e3a88f

add MSVC /Zc:preprocessor option

a5b6582c

move cub/cub.cuh include to cu_inc/cub.cuh wrapper, put it in cu_inc/…

2394989a

Revert "move StatusCodeToHRESULT to its own file so we don't need to …

3ced7aa2

fix ORT_DEF2STR_HELPER macro

8787a009

h2exp workaround for sm_52 or lower

92691338

Revert "fix stage name"

8eb610a2

Revert "debugging - split out cuda python builds into single cuda arc…

5569e40a

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20_fix

6eb519fa

Merge branch 'edgchen1/cpp20_fix' into edgchen1/cpp20

144652c3

edgchen1 requested a review from

copilot-pull-request-reviewer 32 days ago

copilot-pull-request-reviewer commented on 2026-03-10

Revert "add MSVC /Zc:preprocessor option"

c0177637

Merge branch 'edgchen1/cpp20_fix' into edgchen1/cpp20

1a2e7b41

revert linux_minimal_build.yml changes

d84ea849

limit nvcc_threads to 1 for CUDA Win Python packaging build

0f98614e

try nvcc_threads 2

ddc5bbc7

Revert "try nvcc_threads 2"

b7db7e7e

Merge branch 'edgchen1/cpp20_fix' into edgchen1/cpp20

38f94dc2

edgchen1 requested a review from

copilot-pull-request-reviewer 31 days ago

copilot-pull-request-reviewer commented on 2026-03-11

edgchen1 marked this pull request as ready for review 31 days ago

edgchen1 requested a review from

fs-eire 31 days ago

edgchen1 requested a review from

tianleiwu 31 days ago

edgchen1 commented on 2026-03-12

tianleiwu commented on 2026-03-12

Merge remote-tracking branch 'origin/main' into edgchen1/cpp20

da8cdd0a

tianleiwu dismissed these changes on 2026-03-12

update comments about Timestamp class, add rationale for not making c…

30d8e934

edgchen1 dismissed their stale review via 30d8e934 30 days ago

edgchen1 requested a review from

tianleiwu 30 days ago

tianleiwu approved these changes on 2026-03-12

edgchen1 merged b5f869b7 into main 30 days ago

edgchen1 deleted the edgchen1/cpp20 branch 30 days ago

onnxruntime
Update to C++20
#27178

Merged

Update to C++20 #27178

onnxruntime Update to C++20 #27178 Merged

Update to C++20 #27178

onnxruntime
Update to C++20
#27178

Merged