http://llvm.org/bugs/show_bug.cgi?id=20865
Bug ID: 20865
Summary: autoconf unconditionally defines _GNU_SOURCE
Product: Build scripts
Version: trunk
Hardware: PC
OS: OpenBSD
Status: NEW
Severity: normal
Priority: P
Component: autoconf
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
When built via autoconf LLVM unconditionally defines _GNU_SOURCE, this is not
the case when built via cmake. When built via cmake LLVM first checks if the
host is using glibc before adding the define.
This becomes a problem when llvm-config --cflags includes _GNU_SOURCE and
projects like Mesa assume _GNU_SOURCE means the system is using glibc.
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