diff options
| author | Brad King <brad.king@kitware.com> | 2021-02-05 07:11:58 -0500 |
|---|---|---|
| committer | Brad King <brad.king@kitware.com> | 2021-02-05 07:43:59 -0500 |
| commit | a8b41e2c68ca38b2b47f20c591042fb69a731494 (patch) | |
| tree | 68c047db3d9e28d4ec1b8cb305c2a93c4f81203d | |
| parent | 82cfeeb484f584163793c13ee12288b630549eb3 (diff) | |
| download | cmake-a8b41e2c68ca38b2b47f20c591042fb69a731494.tar.gz | |
LexerParser: Do not override existing _POSIX_C_SOURCE definition
In commit f034b0f663 (CMake compilation: do not use compiler extensions,
2020-03-14, v3.18.0-rc1~494^2) we explicitly defined `_POSIX_C_SOURCE`
to ensure availability of POSIX APIs even when compiler extensions are
not enabled. Update the code to avoid redefining `_POSIX_C_SOURCE` if
it is already defined. This occurs when building our release binaries
as configured in `Utilities/Release/linux`, where we define
`_POSIX_C_SOURCE` explicitly on the compiler command line.
| -rw-r--r-- | Source/cmStandardLexer.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Source/cmStandardLexer.h b/Source/cmStandardLexer.h index e0b21165ef..b248b919ad 100644 --- a/Source/cmStandardLexer.h +++ b/Source/cmStandardLexer.h @@ -7,7 +7,7 @@ /* Needed for glibc < 2.12 */ # define _XOPEN_SOURCE 600 #endif -#if !defined(_WIN32) && !defined(__sun) +#if !defined(_POSIX_C_SOURCE) && !defined(_WIN32) && !defined(__sun) /* POSIX APIs are needed */ # define _POSIX_C_SOURCE 200809L #endif |