Shell for evaluating .SHELLFLAGS

[Afif Elghraoui]

Hello,
I am trying to use sqlite3 as my Makefile shell. In order to have the
query outputs go to a file, I need to pass a file in to sqlite using its
-i flag. I rely on the process substitution feature in bash for the
.SHELLFLAGS to provide the file:

SHELL=/usr/bin/env sqlite3
.SHELLFLAGS=-init <(echo ".output $@") $(DB)

I get this error:
/bin/sh: 1: Syntax error: "(" unexpected
Makefile:13: recipe for target 'fq' failed

It looks like .SHELLFLAGS is evaluated with /bin/sh regardless of what
SHELL is set to. Is there any way I could evaluate them with bash?

Many thanks and regards
Afif