build: Fix AUTHORS generation

Using s/#authorslist#/$$out/ makes perl eat @domain part of all email
addresses from $out since it tries to interpret them as array variables.
I'm not sure if we can escape those in s/// but I know we can use print:

    s/#authorslist#// and print '$$out'

to tell perl not to even look inside $out.

This patch also fixes gen-AUTHORS so that it works in VPATH.

diff --git a/Makefile.am b/Makefile.am
index 9556b429defb055d83ae9f46838309d367b8926a..5b1e27e319a19b942467595da4ba89912750c2cf 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -95,9 +95,9 @@ gen-ChangeLog:
 
 .PHONY: gen-AUTHORS
 gen-AUTHORS:
-       $(AM_V_GEN)if test -d .git; then \
-           out="`git log --pretty=format:'%aN <%aE>' | sort -u`" && \
-           cat $(srcdir)/AUTHORS.in | perl -p -e "s/#authorslist#/$$out/" > \
-             $(distdir)/AUTHORS-tmp && \
+       $(AM_V_GEN)if test -d $(srcdir)/.git; then \
+           out="`cd $(srcdir) && git log --pretty=format:'%aN <%aE>' | sort -u`" && \
+           perl -p -e "s/#authorslist#// and print '$$out'" \
+             < $(srcdir)/AUTHORS.in > $(distdir)/AUTHORS-tmp && \
            mv -f $(distdir)/AUTHORS-tmp $(distdir)/AUTHORS ; \
        fi