The call to model_error() would return and lead to an incorrect dereferencing
of the optional<int> rv.

The call to model_error() should have been replaced by a call to error() in
db1f6c29. Then the move to an optional<int> in
46b2c735 introduced the bug.

See https://forum.dynare.org/t/preprocessing-failed-for-specific-mod-file/26705

(cherry picked from commit 96b6dfa8)

[skip ci]

The driver was calling “clear” before “global”, hence clearing local and not
global variables (unless “global” had already been called at scope).

Rather use “clearvars -global”.

(cherry picked from commit c1381f1d)

std::fill takes a range that is open on the right bound (i.e. [first, last) and
not [first, last]).

(cherry picked from commit 743ccf77)

(cherry picked from commit f8a73341)

They would be ignored.

(cherry picked from commit 531b3332)

See:
- https://github.com/Homebrew/homebrew-core/issues/165388
- https://trac.macports.org/ticket/69639

(cherry picked from commit 31080eed)

(cherry picked from commit 2b4f28c7)

By the way, fix the error message if a compiler cannot be found.

(cherry picked from commit e351c2d2)

(cherry picked from commit 34ec8ece)

(cherry picked from commit 9eb2e73f)

…instead of cerr.

(cherry picked from commit 0611f949)

[skip ci]

Bug introduced in 0eb11d33.

(cherry picked from commit 097f706c)

(cherry picked from commit 585dc636)

Closes: #127
(cherry picked from commit 3a9a7924)

[skip ci]

(cherry picked from commit db1bad65)

By the way, also improve the terminology used in variable and method names: a
“constraint” is something like “ZLB” or “INEG”, a regime is a state in which
constraints are either binding or relaxed.

Really closes: #103

(cherry picked from commit b134dba3)

In particular, emit more explicit error messages in the presence of
inconsistencies.

Closes: #103
(cherry picked from commit 13c29eaa)

Ref. dynare#1918

(cherry picked from commit 7dd6b876)

Closes: #124

Remove globals from extended path

See merge request Dynare/preprocessor!99

Add steady_state_model_present field to modfile.json

See merge request Dynare/preprocessor!100

The old name is still accepted, but will trigger a deprecation warning.

Ref. !96

Ref. !97

Ref. !98

dr_block has been removed