about summary refs log tree commit diff
path: root/stdlib
diff options
context:
space:
mode:
Diffstat (limited to 'stdlib')
-rw-r--r--stdlib/isomac.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/stdlib/isomac.c b/stdlib/isomac.c
index cfb5672af6..ab63d1b154 100644
--- a/stdlib/isomac.c
+++ b/stdlib/isomac.c
@@ -176,7 +176,7 @@ static char *macros[] =
 /* Format string to build command to invoke compiler.  */
 static const char fmt[] = "\
 echo \"#include <%s>\" |\
-%s -E -dM -ansi -pedantic %s -I. \
+%s -E -dM -ansi -pedantic %s -D_LIBC -D_ISOMAC -I. \
 -isystem `%s --print-prog-name=include` - 2> /dev/null > %s";