This is necessary since Xapian may not be installed and
we may hide a lot of errors this way.
---
 Makefile.PL | 22 ++++++++++++++++------
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/Makefile.PL b/Makefile.PL
index a9b15ca..ccf4bbb 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -3,14 +3,16 @@
 # License: AGPLv3 or later (https://www.gnu.org/licenses/agpl-3.0.txt)
 use strict;
 use ExtUtils::MakeMaker;
+my @EXE_FILES = split("\n", `git ls-files 'public-inbox*' 2>/dev/null`);
+my $PM_FILES = `git ls-files lib '*.pm' 2>/dev/null`;
+$PM_FILES =~ tr/\n/ /;
+
 WriteMakefile(
        NAME => 'public-inbox',
        VERSION => '0.0.0',
        AUTHOR => 'Eric Wong <normalper...@yhbt.net>',
        ABSTRACT => 'public-inbox server infrastructure',
-       EXE_FILES => [qw/public-inbox-mda public-inbox.cgi
-                       public-inbox-learn public-inbox-init
-                       public-inbox-index/],
+       EXE_FILES => \@EXE_FILES,
        PREREQ_PM => {
                # note: we use ssoma(1) and spamc(1), NOT the Perl modules
                # We also depend on git through ssoma.
@@ -32,11 +34,19 @@ WriteMakefile(
 );
 
 sub MY::postamble {
-  <<'EOF';
+  <<EOF;
 -include Documentation/include.mk
-N = $(shell echo $$(( $$(nproc 2>/dev/null || echo 2) + 1)))
+my_syntax := \$(addsuffix .syntax, $PM_FILES \$(EXE_FILES))
+
+N := \$(shell echo \$\$(( \$\$(nproc 2>/dev/null || echo 2) + 1)))
+
+%.syntax ::
+       @\$(PERL) -I lib -c \$(subst .syntax,,\$@)
+
+syntax:: \$(my_syntax)
+
 check:: pure_all
-       prove -lv -j$(N)
+       prove -lv -j\$(N)
 
 EOF
 }
-- 
EW

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