When we are failing because of a lack of a _required_ engine, note
that the engine was "required".
When engines are disabled, any required engine should cause a
failure.
We still interpret "AccelName" as turning on the "HardwareAccel"
feature, but we no longer modify the user's options here.
Fixes bug 32382; bugfix on 0.2.2.1-alpha when we added openssl
engine support.
In our old design, we had to declare configuration structures (like
or_options_t) and variable tables (like option_vars_) separately,
and we used some magic to enforce their consistency (see
conftesting.h).
With this design, we write a single definition for the configuration
object and its fields, and use C macros to expand it either into a
structure, or a variable table. Since they are both made from the
same source, they can't become inconsistent.
The two designs can coexist happily, and we can migrate from one to
the other at our convenience.
This file is a workaround for the issue that if you say `a ## b` to
create a token that is the name of a macro, the C preprocessor won't
expand that macro. So you can't say this:
#define FOO__SQUARE(x) ((x)*(x))
#define FOO__CUBE(x) ((x)*(x)*(x))
#define FOO(func, x) FOO__##func(x)
Instead, the standard C trick is to add a layer of indirection:
#define PASTE(a,b) PASTE__(a,b)
#define PASTE__(a,b) a ## b
#define FOO__SQUARE(x) ((x)*(x))
#define FOO__CUBE(x) ((x)*(x)*(x))
#define FOO(func, x) PASTE(FOO__, func)(x)
We should use this kind of trick sparingly, since it gets confusing.
If you add a custom remote, or a new branch, and don't fetch first,
then the script would fail when checking for unchanged branches.
Instead, skip the check: a new branch is definitely a change.
When the relay module is disabled, make "ClientOnly 1" and
"DirCache 0" by default. (But keep "ClientOnly 0" and
"DirCache 1" as the defaults for the unit tests.)
And run "make autostyle".
Part of ticket 32410.
Doing so caused us to crash in some unusual circumstances, such as
using --verify-config to verify a configuration that failed during
the options_act() stage.
Fixes bug 32407; bugfix on 0.3.3.1-alpha.
