diff options
Diffstat (limited to 'source3/configure.in')
| -rw-r--r-- | source3/configure.in | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/source3/configure.in b/source3/configure.in index 0808729fa3..61a4e2e524 100644 --- a/source3/configure.in +++ b/source3/configure.in @@ -535,6 +535,38 @@ if test x"$samba_cv_volatile" = x"yes"; then AC_DEFINE(HAVE_VOLATILE, 1, [Whether the C compiler understands volatile]) fi +############################################ +# check if the compiler can handle negative enum values +# and don't truncate the values to INT_MAX +# a runtime test is needed here +AC_SUBST(PIDL_ARGS) +AC_CACHE_CHECK([that the C compiler understands negative enum values],SMB_BUILD_CC_NEGATIVE_ENUM_VALUES, [ + AC_TRY_RUN( +[ + #include <stdio.h> + enum negative_values { NEGATIVE_VALUE = 0xFFFFFFFF }; + int main(void) { + enum negative_values v1 = NEGATIVE_VALUE; + unsigned v2 = NEGATIVE_VALUE; + + if (v1 != 0xFFFFFFFF) { + printf("%u != 0xFFFFFFFF\n", v1); + return 1; + } + if (v2 != 0xFFFFFFFF) { + printf("%u != 0xFFFFFFFF\n", v2); + return 1; + } + + return 0; + } +], + SMB_BUILD_CC_NEGATIVE_ENUM_VALUES=yes,SMB_BUILD_CC_NEGATIVE_ENUM_VALUES=no)]) +if test x"$SMB_BUILD_CC_NEGATIVE_ENUM_VALUES" != x"yes"; then + AC_MSG_WARN([using --unit-enums for pidl]) + PIDL_ARGS="$PIDL_ARGS --uint-enums" +fi + dnl Figure out the flags to support named structure initializers LIBREPLACE_C99_STRUCT_INIT([],[AC_MSG_ERROR([c99 structure initializer are not supported])]) |