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-rw-r--r--erts/configure.in6
1 files changed, 6 insertions, 0 deletions
diff --git a/erts/configure.in b/erts/configure.in
index f7d883bcca..e8923d0dcf 100644
--- a/erts/configure.in
+++ b/erts/configure.in
@@ -447,6 +447,12 @@ dnl ---------------------------------------------------------------------
dnl NOTE: CPPFLAGS will be included in CFLAGS at the end
case $host_os in
linux*) CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE";;
+ aix*|os400*)
+ # * _ALL_SOURCE: Required to get the winsize structure for TIOCSWINSZ.
+ # * _LINUX_SOURCE_COMPAT: Not required, but makes some libc functions
+ # behave closer to glibc assumptions.
+ CPPFLAGS="$CPPFLAGS -D_ALL_SOURCE -D_LINUX_SOURCE_COMPAT"
+ ;;
win32)
# The ethread library requires _WIN32_WINNT of at least 0x0403.
# -D_WIN32_WINNT=* from CPPFLAGS is saved in ETHR_DEFS.