Prefer $(info) to @echo

Have GNU Make output some diagnostics directly, instead of forking
and execing a shell to do it.
* GNUmakefile (help):
* doc/lispref/two-volume.make (vol2.pdf, elisp2med-init)
(elisp2-init):
* doc/misc/Makefile.in (echo-info, echo-sources):
* lib-src/Makefile.in (archlibdir, install, check):
* src/verbose.mk.in (AM_V_AR, AM_V_CC, AM_V_CXX, AM_V_CCLD)
(AM_V_CXXLD, AM_V_ELC, AM_V_ELN, AM_V_GEN, AM_V_GLOBALS)
(AM_V_RC):
* test/Makefile.in (subdirs, subdir-targets):
Prefer $(info) to @echo.
* GNUmakefile (MAKECMDGOALS, configure, Makefile):
Prefer $(warning) to @echo >&2.
* src/verbose.mk.in (AM_V_ELN): Output target, like the others.

GNUmakefile

@@ -36,31 +36,31 @@
 
 ifeq (help,$(filter help,$(MAKECMDGOALS)))
 help:
-	@echo "NOTE:  This is a brief summary of some common make targets."
+	$(info $ NOTE:  This is a brief summary of some common make targets.)
-	@echo "For more detailed information, please read the files INSTALL,"
+	$(info $ For more detailed information, please read the files INSTALL,)
-	@echo "INSTALL.REPO, Makefile or visit this URL:"
+	$(info $ INSTALL.REPO, Makefile or visit this URL:)
-	@echo "https://www.gnu.org/prep/standards/html_node/Standard-Targets.html"
+	$(info $ https://www.gnu.org/prep/standards/html_node/Standard-Targets.html)
-	@echo ""
+	$(info $ )
-	@echo "make all              -- compile and build Emacs"
+	$(info $ make all              -- compile and build Emacs)
-	@echo "make install          -- install Emacs"
+	$(info $ make install          -- install Emacs)
-	@echo "make TAGS             -- update tags tables"
+	$(info $ make TAGS             -- update tags tables)
-	@echo "make clean            -- delete built files but preserve configuration"
+	$(info $ make clean            -- delete built files but preserve configuration)
-	@echo "make mostlyclean      -- like 'make clean', but leave those files that"
+	$(info $ make mostlyclean      -- like 'make clean', but leave those files that)
-	@echo "                         usually do not need to be recompiled"
+	$(info $                          usually do not need to be recompiled)
-	@echo "make distclean        -- delete all build and configuration files,"
+	$(info $ make distclean        -- delete all build and configuration files,)
-	@echo "                         leave only files included in source distribution"
+	$(info $                          leave only files included in source distribution)
-	@echo "make maintainer-clean -- delete almost everything that can be regenerated"
+	$(info $ make maintainer-clean -- delete almost everything that can be regenerated)
-	@echo "make extraclean       -- like maintainer-clean, and also delete"
+	$(info $ make extraclean       -- like maintainer-clean, and also delete)
-	@echo "                         backup and autosave files"
+	$(info $                          backup and autosave files)
-	@echo "make bootstrap        -- delete all compiled files to force a new bootstrap"
+	$(info $ make bootstrap        -- delete all compiled files to force a new bootstrap)
-	@echo "                         from a clean slate, then build in the normal way"
+	$(info $                          from a clean slate, then build in the normal way)
-	@echo "make uninstall        -- remove files installed by 'make install'"
+	$(info $ make uninstall        -- remove files installed by 'make install')
-	@echo "make check            -- run the Emacs test suite"
+	$(info $ make check            -- run the Emacs test suite)
-	@echo "make docs             -- generate Emacs documentation in info format"
+	$(info $ make docs             -- generate Emacs documentation in info format)
-	@echo "make html             -- generate documentation in html format"
+	$(info $ make html             -- generate documentation in html format)
-	@echo "make ps               -- generate documentation in ps format"
+	$(info $ make ps               -- generate documentation in ps format)
-	@echo "make pdf              -- generate documentation in pdf format "
+	$(info $ make pdf              -- generate documentation in pdf format )
-	@exit
+	@:
 
 .PHONY: help
 
@@ -79,7 +79,7 @@ else
 ifeq ($(filter-out %clean,$(or $(MAKECMDGOALS),default)),)
 
 $(MAKECMDGOALS):
-	@echo >&2 'No Makefile; skipping $@.'
+	$(warning No Makefile; skipping $@.)
 
 else
 
@@ -97,18 +97,18 @@ default $(ORDINARY_GOALS): Makefile
 .NOTPARALLEL:
 
 configure:
-	@echo >&2 'There seems to be no "configure" file in this directory.'
+	$(warning There seems to be no "configure" file in this directory.)
-	@echo >&2 Running ./autogen.sh ...
+	$(warning Running ./autogen.sh ...)
 	./autogen.sh
 	@echo >&2 '"configure" file built.'
 
 Makefile: configure
-	@echo >&2 'There seems to be no Makefile in this directory.'
+	$(warning There seems to be no Makefile in this directory.)
 ifeq ($(configure),default)
-	@echo >&2 'Running ./configure ...'
+	$(warning Running ./configure ...)
 	./configure
 else
-	@echo >&2 'Running ./configure '$(configure)'...'
+	$(warning Running ./configure $(configure)...)
 	./configure $(configure)
 endif
 	@echo >&2 'Makefile built.'

doc/lispref/two-volume.make

@@ -35,7 +35,7 @@ vol1.pdf: elisp1med-fns-ready elisp1med-aux-ready elisp1med-toc-ready
 	$(tex1)
 #
 vol2.pdf: elisp2med-fns-ready elisp2med-aux-ready elisp2med-toc-ready
-	@echo "Final TeX run for volume 2..."
+	$(info Final TeX run for volume 2...)
 	cp elisp2med-toc-ready elisp2-toc-ready.toc
 	cp elisp2med-fns-ready vol2.fns
 	cp elisp2med-aux-ready vol2.aux
@@ -123,7 +123,7 @@ elisp1med-init: elisp1-fns-ready elisp1-aux-ready elisp1init-toc-ready $(texinfo
 	mv vol1.toc elisp1med-toc
 #
 elisp2med-init: elisp2-fns-ready elisp2-aux-ready elisp2init-toc-ready $(texinfodir)/texinfo.tex
-	@echo "Final TeX run for volume 2..."
+	$(info Final TeX run for volume 2...)
 	cp elisp2init-toc-ready elisp2-toc-ready.toc
 	cp elisp2-fns-ready vol2.fns
 	cp elisp2-aux-ready vol2.aux
@@ -211,7 +211,7 @@ elisp1-init: elisp.texi
 	touch $@
 #
 elisp2-init: elisp.texi
-	@echo "Initial TeX run for volume 2..."
+	$(info Initial TeX run for volume 2...)
 	rm -f vol2.aux vol2.toc
 	$(tex2)
 	texindex vol2.??

doc/misc/Makefile.in

@@ -130,12 +130,12 @@ info: $(INFO_TARGETS)
 
 ## Used by top-level Makefile.
 ## Base file names of output info files.
+INFO_BASES = $(patsubst %.info,%,$(notdir $(INFO_INSTALL)))
 echo-info:
-	@echo "$(INFO_INSTALL) " | \
+	@: $(info $(addsuffix .info,$(INFO_BASES)))
-	  sed -e 's|[^ ]*/||g' -e 's/\.info//g' -e "s/  */.info /g"
 
 echo-sources:
-	@echo ${SOURCES}
+	@: $(info $(SOURCES))
 
 dvi: $(DVI_TARGETS)
 

lib-src/Makefile.in

@@ -297,8 +297,8 @@ maybe-blessmail: $(BLESSMAIL_TARGET)
 ## up if chown or chgrp fails, as the package responsible for
 ## installing Emacs can fix this problem later.
 $(DESTDIR)${archlibdir}: all
-	@echo
+	$(info $ )
-	@echo "Installing utilities run internally by Emacs."
+	$(info Installing utilities run internally by Emacs.)
 	umask 022 && ${MKDIR_P} "$(DESTDIR)${archlibdir}"
 	exp_archlibdir=`cd "$(DESTDIR)${archlibdir}" && /bin/pwd` && \
 	if [ "$$exp_archlibdir" != "`/bin/pwd`" ]; then \
@@ -339,8 +339,8 @@ $(DESTDIR)${archlibdir}: all
 .PHONY: bootstrap-clean check tags
 
 install: $(DESTDIR)${archlibdir}
-	@echo
+	$(info $ )
-	@echo "Installing utilities for users to run."
+	$(info Installing utilities for users to run.)
 	umask 022 && ${MKDIR_P} "$(DESTDIR)${bindir}"
 	for file in ${INSTALLABLES} ; do \
 	  $(INSTALL_PROGRAM) $(INSTALL_STRIP) $${file} \
@@ -375,7 +375,7 @@ bootstrap-clean maintainer-clean: distclean
 
 ## Test the contents of the directory.
 check:
-	@echo "We don't have any tests for the lib-src/ directory yet."
+	$(info We don't have any tests for the lib-src/ directory yet.)
 
 tagsfiles = $(wildcard ${srcdir}/*.[ch])
 

src/verbose.mk.in

@@ -33,26 +33,26 @@ AM_V_GLOBALS =
 AM_V_NO_PD =
 AM_V_RC =
 else
-AM_V_AR = @echo "  AR      " $@;
+AM_V_AR      = @$(info $   AR       $@)
 AM_V_at = @
-AM_V_CC = @echo "  CC      " $@;
+AM_V_CC      = @$(info $   CC       $@)
-AM_V_CXX = @echo "  CXX     " $@;
+AM_V_CXX     = @$(info $   CXX      $@)
-AM_V_CCLD = @echo "  CCLD    " $@;
+AM_V_CCLD    = @$(info $   CCLD     $@)
-AM_V_CXXLD = @echo "  CXXLD   " $@;
+AM_V_CXXLD   = @$(info $   CXXLD    $@)
 ifeq ($(HAVE_NATIVE_COMP),yes)
 ifeq ($(NATIVE_DISABLED),1)
-AM_V_ELC = @echo "  ELC     " $@;
+AM_V_ELC     = @$(info $   ELC      $@)
 AM_V_ELN =
 else
-AM_V_ELC = @echo "  ELC+ELN " $@;
+AM_V_ELC     = @$(info $   ELC+ELN  $@)
-AM_V_ELN = @echo "  ELN " $@;
+AM_V_ELN     = @$(info $   ELN      $@)
 endif
 else
-AM_V_ELC = @echo "  ELC     " $@;
+AM_V_ELC     = @$(info $   ELC      $@)
 AM_V_ELN =
 endif
-AM_V_GEN = @echo "  GEN     " $@;
+AM_V_GEN     = @$(info $   GEN      $@)
-AM_V_GLOBALS = @echo "  GEN     " globals.h;
+AM_V_GLOBALS = @$(info $   GEN      globals.h)
 AM_V_NO_PD = --no-print-directory
-AM_V_RC = @echo "  RC      " $@;
+AM_V_RC      = @$(info $   RC       $@)
 endif

test/Makefile.in

@@ -375,10 +375,10 @@ check-declare:
 .PHONY: subdirs subdir-targets generate-test-jobs
 
 subdirs:
-	@echo $(SUBDIRS)
+	@: $(info $(SUBDIRS))
 
 subdir-targets:
-	@echo $(SUBDIR_TARGETS)
+	@: $(info $(SUBDIR_TARGETS))
 
 generate-test-jobs:
 	@$(MAKE) -C infra generate-test-jobs SUBDIRS="$(SUBDIRS)"