68 lines
2.4 KiB
C
68 lines
2.4 KiB
C
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//
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// Copyright 2019 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#ifndef ABSL_FLAGS_CONFIG_H_
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#define ABSL_FLAGS_CONFIG_H_
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// Determine if we should strip string literals from the Flag objects.
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// By default we strip string literals on mobile platforms.
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#if !defined(ABSL_FLAGS_STRIP_NAMES)
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#if defined(__ANDROID__)
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#define ABSL_FLAGS_STRIP_NAMES 1
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#elif defined(__APPLE__)
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#include <TargetConditionals.h>
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#if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
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#define ABSL_FLAGS_STRIP_NAMES 1
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#elif defined(TARGET_OS_EMBEDDED) && TARGET_OS_EMBEDDED
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#define ABSL_FLAGS_STRIP_NAMES 1
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#endif // TARGET_OS_*
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#endif
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#endif // !defined(ABSL_FLAGS_STRIP_NAMES)
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#if !defined(ABSL_FLAGS_STRIP_NAMES)
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// If ABSL_FLAGS_STRIP_NAMES wasn't set on the command line or above,
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// the default is not to strip.
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#define ABSL_FLAGS_STRIP_NAMES 0
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#endif
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#if !defined(ABSL_FLAGS_STRIP_HELP)
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// By default, if we strip names, we also strip help.
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#define ABSL_FLAGS_STRIP_HELP ABSL_FLAGS_STRIP_NAMES
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#endif
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// ABSL_FLAGS_INTERNAL_ATOMIC_DOUBLE_WORD macro is used for using atomics with
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// double words, e.g. absl::Duration.
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// For reasons in bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80878, modern
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// versions of GCC do not support cmpxchg16b instruction in standard atomics.
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#ifdef ABSL_FLAGS_INTERNAL_ATOMIC_DOUBLE_WORD
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#error "ABSL_FLAGS_INTERNAL_ATOMIC_DOUBLE_WORD should not be defined."
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#elif defined(__clang__) && defined(__x86_64__) && \
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defined(__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16)
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#define ABSL_FLAGS_INTERNAL_ATOMIC_DOUBLE_WORD 1
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#endif
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// ABSL_FLAGS_INTERNAL_HAS_RTTI macro is used for selecting if we can use RTTI
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// for flag type identification.
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#ifdef ABSL_FLAGS_INTERNAL_HAS_RTTI
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#error ABSL_FLAGS_INTERNAL_HAS_RTTI cannot be directly set
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#elif !defined(__GNUC__) || defined(__GXX_RTTI)
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#define ABSL_FLAGS_INTERNAL_HAS_RTTI 1
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#endif // !defined(__GNUC__) || defined(__GXX_RTTI)
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#endif // ABSL_FLAGS_CONFIG_H_
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