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-rw-r--r--Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 562d9d4..2393065 100644
--- a/Makefile
+++ b/Makefile
@@ -22,7 +22,7 @@ CCFLAGS_UNHOSTED = -nostdinc -ffreestanding
# Preprocessor flags defined by slibc that are required to build the slibc.
CCFLAGS_SLIBC_DEFS = -D_SLIBC_SOURCE=1 -D_GNU_SOURCE=1 -D_BSD_SOURCE=1 -D_SLIBC_SUPPRESS_WARNINGS=1 \
- -D_POSIX_C_SOURCE=999999L -D_XOPEN_SOURCE=9999 -D__BUILDING_SLIBC=1
+ -D_POSIX_C_SOURCE=999999L -D_XOPEN_SOURCE=9999 -D_PLAN9_SOURCE=1 -D__BUILDING_SLIBC=1
# __BUILDING_SLIBC is used to that make all prototypes visible, that are otherwise
# hidden because the library is compiled with a too old revision of C.