Only add -Wno-unused-result if supported.

b9226c1f · Tollef Fog Heen · 7cf7224e · b9226c1f
Commit b9226c1f authored Nov 28, 2013 by Tollef Fog Heen
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Showing with 3 additions and 2 deletions

configure.ac configure.ac +3 -2

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--- a/configure.ac
+++ b/configure.ac
@@ -461,8 +461,9 @@ OCFLAGS="${OCFLAGS} -Wall -Werror"
 AX_CHECK_COMPILE_FLAG([-Wno-error=unused-result],
    [CFLAGS="${CFLAGS} -Wno-error=unused-result"
     OCFLAGS="${OCFLAGS} -Wno-error=unused-result"],
-    [CFLAGS="${CFLAGS} -Wno-unused-result"
-     OCFLAGS="${OCFLAGS} -Wno-unused-result"])
+    [AX_CHECK_COMPILE_FLAG([-Wno-unused-result],
+     [CFLAGS="${CFLAGS} -Wno-unused-result"
+      OCFLAGS="${OCFLAGS} -Wno-unused-result"])])

 # This corresponds to FreeBSD's WARNS level 6
 DEVELOPER_CFLAGS="-fstack-protector -Werror -Wall -Wno-format-y2k -W -Wno-unused-parameter -Wstrict-prototypes -Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual -Wwrite-strings -Wswitch -Wshadow -Wunused-parameter -Wcast-align -Wchar-subscripts -Winline -Wnested-externs -Wno-pointer-sign -Wextra -Wno-missing-field-initializers -Wno-sign-compare"