Preprocessor directives like "#if SYMBOL" silently replace undefined or
misspelt symbols with 0, which makes configuration bugs hard to spot.
Compiler flag "-Wundef" prevents such errors.
Change-Id: I91b7ba2db02ef0c3c452d334601c53aebda4660e
Signed-off-by: R. Diez <rdiezmail-openocd@yahoo.de>
Reviewed-on: http://openocd.zylin.com/6238
Tested-by: jenkins
Reviewed-by: Antonio Borneo <borneo.antonio@gmail.com>
AC_MSG_ERROR([$3 is required for the ADAPTER_DESC([adapter])])
])
ADAPTER_VAR([adapter])=no
+ AC_DEFINE([BUILD_]ADAPTER_SYM([adapter]), [0], [0 if you do not want the ]ADAPTER_DESC([adapter]).)
])
AM_CONDITIONAL(ADAPTER_SYM([adapter]), [test "x$ADAPTER_VAR([adapter])" != "xno"])
])
GCC_WARNINGS="${GCC_WARNINGS} -Wcast-align"
GCC_WARNINGS="${GCC_WARNINGS} -Wredundant-decls"
GCC_WARNINGS="${GCC_WARNINGS} -Wpointer-arith"
+ GCC_WARNINGS="${GCC_WARNINGS} -Wundef"
])
AS_IF([test "x${gcc_werror}" = "xyes"], [
GCC_WARNINGS="${GCC_WARNINGS} -Werror"