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AS_IF([test x"$objc_runtime" = x"Apple"], [
AC_CHECK_HEADER(Foundation/NSObject.h, [
AC_SUBST(FOUNDATION_COMPAT_M, "foundation-compat.m")
])
])
AS_IF([test x"$GOBJC" = x"yes"], [
OBJCFLAGS="$OBJCFLAGS -Wwrite-strings -Wcast-align -Wpointer-arith"
OBJCFLAGS="$OBJCFLAGS -Werror"
AC_MSG_CHECKING(whether gcc has bug objc/27438)
AC_TRY_COMPILE([
@interface OFConstantString
{
struct objc_class *isa;
const char *string;
|
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<
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AS_IF([test x"$objc_runtime" = x"Apple"], [
AC_CHECK_HEADER(Foundation/NSObject.h, [
AC_SUBST(FOUNDATION_COMPAT_M, "foundation-compat.m")
])
])
AS_IF([test x"$GOBJC" = x"yes"], [
OBJCFLAGS="$OBJCFLAGS -Wwrite-strings -Wpointer-arith -Werror"
AC_MSG_CHECKING(whether gcc has bug objc/27438)
AC_TRY_COMPILE([
@interface OFConstantString
{
struct objc_class *isa;
const char *string;
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AC_MSG_RESULT([yes, adding -Wno-unused-variable])
OBJCFLAGS="$OBJCFLAGS -Wno-unused-variable"
AC_SUBST(NO_WARN_UNUSED, "-Wno-unused-variable")
])
AC_MSG_CHECKING(whether we need -Wno-strict-aliasing due to gcc bugs)
AC_TRY_COMPILE([
@interface OFObject
{
Class isa;
}
@end
static struct {
struct objc_class *isa;
} object;
], [
OFObject *test = (OFObject*)&object;
(void)test; /* Get rid of unused variable warning */
], [
AC_MSG_RESULT(no)
], [
AC_MSG_RESULT(yes)
OBJCFLAGS="$OBJCFLAGS -Wno-strict-aliasing"
])
])
AS_IF([test x"$cross_compiling" = x"yes"], [
AC_SUBST(BIN_PREFIX, "$host-")
case "$host" in
*-*-mingw*)
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>
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AC_MSG_RESULT([yes, adding -Wno-unused-variable])
OBJCFLAGS="$OBJCFLAGS -Wno-unused-variable"
AC_SUBST(NO_WARN_UNUSED, "-Wno-unused-variable")
])
AC_MSG_CHECKING(whether we need -Wno-strict-aliasing due to gcc bugs)
AC_TRY_COMPILE([
@interface Foo
{
struct objc_class *isa;
}
@end
static struct {
struct objc_class *isa;
} object;
], [
Foo *test = (Foo*)&object;
(void)test; /* Get rid of unused variable warning */
], [
AC_MSG_RESULT(no)
], [
AC_MSG_RESULT(yes)
OBJCFLAGS="$OBJCFLAGS -Wno-strict-aliasing"
])
old_OBJCFLAGS="$OBJCFLAGS"
OBJCFLAGS="$OBJCFLAGS -Wcast-align"
AC_MSG_CHECKING(whether -Wcast-align is buggy)
AC_TRY_COMPILE([
@interface Foo
{
struct objc_class *isa;
}
@end
@implementation Foo
- (void)foo
{
struct objc_class *c = isa;
(void)c;
}
@end
], [
], [
AC_MSG_RESULT(no)
], [
AC_MSG_RESULT(yes)
OBJCFLAGS="$old_OBJCFLAGS"
])
])
AS_IF([test x"$cross_compiling" = x"yes"], [
AC_SUBST(BIN_PREFIX, "$host-")
case "$host" in
*-*-mingw*)
|