configure: error: header file <perl.h> is required for Perl

[manishrai554]

brew install petere/postgresql/postgresql@12

==> Installing postgresql@12 from petere/postgresql
==> Downloading https://ftp.postgresql.org/pub/source/v12.0/postgresql-12.0.tar.bz2
Already downloaded: /Users/manishr/Library/Caches/Homebrew/downloads/9a050b57e5493faa799013fecb7c1c1d78dd6a8310669083b9c830c52cf83eb3--postgresql-12.0.tar.bz2
==> ./configure --prefix=/usr/local/Cellar/postgresql@12/12.0 --enable-dtrace --enable-nls --with-bonjour --with-gssapi --with-icu --with-ldap --with-libxm
Last 15 lines from /Users/manishr/Library/Logs/Homebrew/postgresql@12/01.configure:
checking for library containing bind_textdomain_codeset... -lintl
checking libintl.h usability... yes
checking libintl.h presence... yes
checking for libintl.h... yes
checking for msgfmt... /usr/local/opt/gettext/bin/msgfmt
checking for msgfmt flags... -c
checking for msgmerge... /usr/local/opt/gettext/bin/msgmerge
checking for xgettext... /usr/local/opt/gettext/bin/xgettext
checking for tclsh... /usr/local/opt/tcl-tk/bin/tclsh
checking for tclConfig.sh... /usr/local/Cellar/tcl-tk/8.6.9_1/lib/tclConfig.sh
checking tcl.h usability... yes
checking tcl.h presence... yes
checking for tcl.h... yes
checking for perl.h... no
configure: error: header file <perl.h> is required for Perl

If reporting this issue please do so at (not Homebrew/brew or Homebrew/core):
https://github.com/petere/homebrew-postgresql/issues

These open issues may also help:
While installing postgresql@11: configure: error: header file <perl.h> is required for Perl #44

[townge]

#44 (comment)
Basically, you need to install XCode because Command Line Tools no longer includes perl headers.

[nardonykolyszyn]

#44 (comment)
Basically, you need to install XCode because Command Line Tools no longer includes perl headers.

I have Xcode installed (iOS Catalina) and still got this error.

[chasm]

I also get this error with Xcode "installed" (Catalina) -- but there seem to be plenty of errors around XCode and the command line tools (which are "not in the repository" when I try to install them). Reinstalling XCode accomplished nothing. Apple sucks.