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| author | Simon McVittie <simon.mcvittie@collabora.co.uk> | 2011-07-27 15:59:53 +0100 |
|---|---|---|
| committer | Simon McVittie <simon.mcvittie@collabora.co.uk> | 2011-08-05 14:17:51 +0100 |
| commit | c1bcd2269c590305cad42e000cd39fad49158e3e (patch) | |
| tree | c5ba59ac7adcf414f6ea75e762459dc71028103a /cmake/CMakeLists.txt | |
| parent | 2dfee7317cad8b189dea42e44f1082fb6d91bfe3 (diff) | |
| download | dbus-c1bcd2269c590305cad42e000cd39fad49158e3e.tar.gz | |
cmake: always enable GNU and recent-POSIX extensions, like autoconf does
If the C library is (e)glibc, this allows use of POSIX, BSD, SVID, GNU,
etc., extensions to ISO C, regardless of using -ansi or not.
Not doing this broke the cmake build on Linux since commit 18b08180,
which added AC_USE_SYSTEM_EXTENSIONS to configure.ac (and removed
_GNU_SOURCE from files that use it) without also updating the cmake
build system. SO_PEERCRED is defined unconditionally, but struct ucred
is considered to be a GNU extension, so can't be used under _GNU_SOURCE.
Bug: https://bugs.freedesktop.org/show_bug.cgi?id=29228
Reviewed-by: Will Thompson <will.thompson@collabora.co.uk>
Diffstat (limited to 'cmake/CMakeLists.txt')
| -rw-r--r-- | cmake/CMakeLists.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt index 04f318a3..750e3f1a 100644 --- a/cmake/CMakeLists.txt +++ b/cmake/CMakeLists.txt @@ -100,6 +100,9 @@ OPTION(DBUS_DISABLE_ASSERTS "Disable assertion checking" OFF) option (DBUS_ENABLE_STATS "enable bus daemon usage statistics" OFF) +# analogous to AC_USE_SYSTEM_EXTENSIONS in configure.ac +add_definitions(-D_POSIX_C_SOURCE=199309L -D_GNU_SOURCE) + # do config checks INCLUDE(ConfigureChecks.cmake) |