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a4c53284c1
This adds a preprocessor callback for the `__has_include` and `__has_include_next` directives. Successful checking for the presence of a header should add it to the list of header dependencies so this overrides the callback in the dependency scanner. Patch by Pete Cooper with some additions by me. rdar://problem/39545636 Differential Revision: https://reviews.llvm.org/D30882 llvm-svn: 342517
41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
// REQUIRES: shell
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// Basic test
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// RUN: rm -rf %t.dir
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// RUN: mkdir %t.dir
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// RUN: mkdir %t.dir/a
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// RUN: echo "#ifndef HEADER_A" > %t.dir/a/header.h
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// RUN: echo "#define HEADER_A" >> %t.dir/a/header.h
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// RUN: echo "#endif" >> %t.dir/a/header.h
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// RUN: mkdir %t.dir/system
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// RUN: echo "#define SYSTEM_HEADER" > %t.dir/system/system-header.h
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// RUN: mkdir %t.dir/next-a
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// RUN: echo "#if __has_include_next(<next-header.h>)" > %t.dir/next-a/next-header.h
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// RUN: echo "#endif" >> %t.dir/next-a/next-header.h
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// RUN: mkdir %t.dir/next-b
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// RUN: echo "#define NEXT_HEADER" > %t.dir/next-b/next-header.h
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// RUN: %clang -MD -MF %t.dir/file.deps %s -fsyntax-only -I %t.dir -isystem %t.dir/system -I %t.dir/next-a -I %t.dir/next-b
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// RUN: FileCheck -input-file=%t.dir/file.deps %s
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// CHECK: dependency-gen-has-include.o
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// CHECK: dependency-gen-has-include.c
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// CHECK: a/header.h
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// CHECK-NOT: missing/file.h
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// CHECK: system/system-header.h
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// CHECK: next-a/next-header.h
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// CHECK: next-b/next-header.h
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// Verify that we ignore system headers in user-only headers mode.
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// RUN: %clang -MMD -MF %t.dir/user-headers.deps %s -fsyntax-only -I %t.dir -isystem %t.dir/system -I %t.dir/next-a -I %t.dir/next-b
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// RUN: FileCheck -input-file=%t.dir/user-headers.deps --check-prefix CHECK-USER-HEADER %s
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// CHECK-USER-HEADER-NOT: system/system-header.h
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#if __has_include("a/header.h")
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#endif
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#if __has_include("missing/file.h")
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#endif
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#if __has_include(<system-header.h>)
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#endif
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#include <next-header.h>
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