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add arm64ec support #1904

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add arm64ec support #1904

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@shijunz shijunz commented Jun 24, 2025

Fix: Add ARM64EC-WINDOWS Build Support

This patch adds support for compiling Abseil on Windows using the ARM64EC architecture.

Changes:

  • Updated platform-specific macros to detect ARM64EC.
  • Adjusted build configuration to support mixed x64/ARM64EC binaries.

Motivation:

ARM64EC is a key technology for enabling gradual migration of Windows applications to ARM64. This patch ensures Abseil can be used in such environments.

Testing:

  • Verified build success on Windows 11 with ARM64EC toolchain.

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google-cla bot commented Jun 24, 2025

Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

View this failed invocation of the CLA check for more information.

For the most up to date status, view the checks section at the bottom of the pull request.

@@ -84,7 +84,7 @@ ZoneInfoSourceFactory default_factory = DefaultFactory;
"@@U?$default_delete@VZoneInfoSource@cctz@time_internal@" ABSL_INTERNAL_MANGLED_NS \
"@@@std@@@std@@ABV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@2@@Z@" ABSL_INTERNAL_MANGLED_BACKREFERENCE \
"@@ZA")
#elif defined(_M_IA_64) || defined(_M_AMD64) || defined(_M_ARM64)
#elif defined(_M_IA_64) || defined(_M_AMD64) || defined(_M_ARM64)|| defined(_M_ARM64EC)
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In addition to the (unfortunate) CLA policy (see the presubmit), changes to this file need to be sent to https://github.com/google/cctz.

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