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-rw-r--r--kde-modules/KDECompilerSettings.cmake3
1 files changed, 3 insertions, 0 deletions
diff --git a/kde-modules/KDECompilerSettings.cmake b/kde-modules/KDECompilerSettings.cmake
index 44358fb4..404d5415 100644
--- a/kde-modules/KDECompilerSettings.cmake
+++ b/kde-modules/KDECompilerSettings.cmake
@@ -140,6 +140,9 @@ if (UNIX)
# implementation recognize it?
_kde_add_platform_definitions(-D_LARGEFILE64_SOURCE)
+ # Non-glibc platforms need this since we specify -std=iso9899:1990
+ _kde_add_platform_definitions(-D_XOPEN_SOURCE=600)
+
include(CheckCXXSourceCompiles)
# By default (in glibc, at least), on 32bit platforms off_t is 32 bits,