make: use the variable MAKE for recursive calls

Closes #1366

Makefile.am

@@ -171,10 +171,10 @@ dist-hook:
 	done)
 
 html:
-	cd docs && make html
+	cd docs && $(MAKE) html
 
 pdf:
-	cd docs && make pdf
+	cd docs && $(MAKE) pdf
 
 check: test examples check-docs
 
@@ -256,7 +256,7 @@ rpm:
 # gak - libtool requires an absolute directory, hence the pwd below...
 pkgadd:
 	umask 022 ; \
-	make install DESTDIR=`/bin/pwd`/packages/Solaris/root ; \
+	$(MAKE) install DESTDIR=`/bin/pwd`/packages/Solaris/root ; \
 	cat COPYING > $(srcdir)/packages/Solaris/copyright ; \
 	cd $(srcdir)/packages/Solaris && $(MAKE) package
 

docs/Makefile.am

@@ -47,13 +47,13 @@ MAN2HTML= roffit $< >$@
 SUFFIXES = .1 .html .pdf
 
 curl.1:
-	cd cmdline-opts && make
+	cd cmdline-opts && $(MAKE)
 
 html: $(HTMLPAGES)
-	cd libcurl && make html
+	cd libcurl && $(MAKE) html
 
 pdf: $(PDFPAGES)
-	cd libcurl && make pdf
+	cd libcurl && $(MAKE) pdf
 
 .1.html:
 	$(MAN2HTML)

docs/libcurl/Makefile.am

@@ -48,13 +48,13 @@ libcurl-symbols.3: $(srcdir)/symbols-in-versions $(srcdir)/mksymbolsmanpage.pl
 	perl $(srcdir)/mksymbolsmanpage.pl < $(srcdir)/symbols-in-versions > $@
 
 html: $(HTMLPAGES)
-	cd opts && make html
+	cd opts && $(MAKE) html
 
 .3.html:
 	$(MAN2HTML)
 
 pdf: $(PDFPAGES)
-	cd opts && make pdf
+	cd opts && $(MAKE) pdf
 
 .3.pdf:
 	@(foo=`echo $@ | sed -e 's/\.[0-9]$$//g'`; \

src/Makefile.am

@@ -101,7 +101,7 @@ if USE_MANUAL
 # Here are the stuff to create a built-in manual
 
 $(MANPAGE):
-	cd $(top_builddir)/docs && make curl.1
+	cd $(top_builddir)/docs && $(MAKE) curl.1
 
 if HAVE_LIBZ
 # This generates the tool_hugehelp.c file in both uncompressed and