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Enable -Wundef, when supported.

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This can catch bugs in which one header defines a numeric constant, and another
uses it without including the defining header. Undefined preprocessor symbols
expand to '0', so that this will compile fine, silently doing the math wrong.
This commit is contained in:
David Goldblatt
2017-04-21 13:47:49 -07:00
committed by David Goldblatt
parent 3823effe12
commit 425253e2cd
5 changed files with 12 additions and 13 deletions
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5
configure.ac
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@@ -241,6 +241,7 @@ if test "x$GCC" = "xyes" ; then
JE_CFLAGS_ADD([-Wall])
JE_CFLAGS_ADD([-Wshorten-64-to-32])
JE_CFLAGS_ADD([-Wsign-compare])
JE_CFLAGS_ADD([-Wundef])
JE_CFLAGS_ADD([-pipe])
JE_CFLAGS_ADD([-g3])
elif test "x$je_cv_msvc" = "xyes" ; then
@@ -824,7 +825,9 @@ else
JEMALLOC_PREFIX="je_"
fi]
)
if test "x$JEMALLOC_PREFIX" != "x" ; then
if test "x$JEMALLOC_PREFIX" = "x" ; then
AC_DEFINE([JEMALLOC_IS_MALLOC])
else
JEMALLOC_CPREFIX=`echo ${JEMALLOC_PREFIX} | tr "a-z" "A-Z"`
AC_DEFINE_UNQUOTED([JEMALLOC_PREFIX], ["$JEMALLOC_PREFIX"])
AC_DEFINE_UNQUOTED([JEMALLOC_CPREFIX], ["$JEMALLOC_CPREFIX"])