diff options
Diffstat (limited to 'absl/base/config.h')
| -rw-r--r-- | absl/base/config.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/absl/base/config.h b/absl/base/config.h index 0524196d..c7b2e64d 100644 --- a/absl/base/config.h +++ b/absl/base/config.h @@ -66,6 +66,35 @@ #include "absl/base/options.h" #include "absl/base/policy_checks.h" +// Abseil long-term support (LTS) releases will define +// `ABSL_LTS_RELEASE_VERSION` to the integer representing the date string of the +// LTS release version, and will define `ABSL_LTS_RELEASE_PATCH_LEVEL` to the +// integer representing the patch-level for that release. +// +// For example, for LTS release version "20300401.2", this would give us +// ABSL_LTS_RELEASE_VERSION == 20300401 && ABSL_LTS_RELEASE_PATCH_LEVEL == 2 +// +// These symbols will not be defined in non-LTS code. +// +// Abseil recommends that clients live-at-head. Therefore, if you are using +// these symbols to assert a minimum version requirement, we recommend you do it +// as +// +// #if defined(ABSL_LTS_RELEASE_VERSION) && ABSL_LTS_RELEASE_VERSION < 20300401 +// #error Project foo requires Abseil LTS version >= 20300401 +// #endif +// +// The `defined(ABSL_LTS_RELEASE_VERSION)` part of the check excludes +// live-at-head clients from the minimum version assertion. +// +// See https://abseil.io/about/releases for more information on Abseil release +// management. +// +// LTS releases can be obtained from +// https://github.com/abseil/abseil-cpp/releases. +#undef ABSL_LTS_RELEASE_VERSION +#undef ABSL_LTS_RELEASE_PATCH_LEVEL + // Helper macro to convert a CPP variable to a string literal. #define ABSL_INTERNAL_DO_TOKEN_STR(x) #x #define ABSL_INTERNAL_TOKEN_STR(x) ABSL_INTERNAL_DO_TOKEN_STR(x) |