Fix error message from 'make html' with no perl.

[gob-dx.git] / Makefile.am

diff --git a/Makefile.am b/Makefile.am
index e8afbc60007d0c14f730aa7d753853f9c952a875..72e996bdf136b791938ce87c5780de5dba12768b 100644 (file)
--- a/Makefile.am
+++ b/Makefile.am
@@ -48,6 +48,13 @@ FLEX_V_  = $(FLEX_V_@AM_DEFAULT_V@)
 FLEX_V_0 = @printf '  %$(DX_ALIGN_V)s %s\n' 'FLEX    ' $<;
 
 TOOL_ERROR = { \
+  echo "ERROR: *** $$tool is missing on your system."; \
+  echo "       *** Because of this, I cannot compile $$toolsrc."; \
+  echo "       *** If $$tool is installed but was not detected by configure,";\
+  echo "       *** consider setting $$toolvar and re-running configure."; \
+  echo "       *** See config.log for more details."; } >&2; false
+
+DEV_TOOL_ERROR = { \
   echo "ERROR: *** $$tool is missing on your system."; \
   echo "       *** Because of this, I cannot compile $$toolsrc, but"; \
   echo "       *** (perhaps because you modified it) the sources appear out"; \
@@ -57,7 +64,7 @@ TOOL_ERROR = { \
 
 src/treefuncs.stamp: src/generate_treefuncs.pl src/treefuncs.def
 if !HAVE_PERL
-       @tool=perl toolvar=PERL toolsrc=src/treefuncs.def; $(TOOL_ERROR)
+       @tool=perl toolvar=PERL toolsrc=src/treefuncs.def; $(DEV_TOOL_ERROR)
 endif
        $(AM_V_at) $(MKDIR_P) $(@D) && touch $@.tmp
        $(AM_V_GEN) (cd $(@D) && \
@@ -68,7 +75,7 @@ endif
 .l.c: ;
 .l.stamp:
 if !HAVE_FLEX
-       @tool=flex toolvar=FLEX toolsrc=$<; $(TOOL_ERROR)
+       @tool=flex toolvar=FLEX toolsrc=$<; $(DEV_TOOL_ERROR)
 endif
        $(AM_V_at) touch $@.tmp
        $(AM_V_at) rm -f $*.h.tmp; mv -f $*.h $*.h.tmp 2>/dev/null; :
@@ -89,7 +96,7 @@ src/lexer.c src/lexer.h: src/lexer.stamp
 html-local: doc/gob2.html
 doc/gob2.html: doc/gob2.1
 if !HAVE_PERL
-       $(PERL_ERROR)
+       @tool=perl toolvar=PERL toolsrc=$@; $(TOOL_ERROR)
 endif
        $(AM_V_GEN) $(PERL) $(top_srcdir)/doc/makehtml.pl <doc/gob2.1 >$@.tmp
        $(AM_V_at) mv -f $@.tmp $@
@@ -121,7 +128,7 @@ git_changelog_start = 2cd951c678998b2b0230c8eb25717ecf0f1dd2db
 dist-hook: generate-changelog
 generate-changelog: unfuck-distdir
        -: "$${GIT_DIR=$(top_srcdir)/.git}"; \
-         test -d "$$GIT_DIR" || exit 0; { \
+         export GIT_DIR; test -d "$$GIT_DIR" || exit 0; { \
            $(PERL) -x $(top_srcdir)/build-aux/gitlog-to-changelog -- \
              $(git_changelog_start).. && \
            echo && \