Avoid empty lines in nmake rule bodies

nmake is tolerant of those empty lines, but jom isn't.  That tolerance
isn't standard make behaviour, so we lean towards avoiding them.

We simply use '@rem' instead.

Fixes #16014

Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Paul Dale <pauli@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/16048)

diff --git a/Configurations/windows-makefile.tmpl b/Configurations/windows-makefile.tmpl
index 43b29baab4e0cc0517abf7fa39fa0aa76817ab28..fc40e61144e95b41478c068e2f5e10c78943ab79 100644 (file)
--- a/Configurations/windows-makefile.tmpl
+++ b/Configurations/windows-makefile.tmpl
@@ -429,28 +429,28 @@ build_apps build_tests: build_programs
 # Convenience target to prebuild all generated files, not just the mandatory
 # ones
 build_all_generated: $(GENERATED_MANDATORY) $(GENERATED) build_docs
-       @{- output_off() if $disabled{makedepend}; "" -}
+       @{- output_off() if $disabled{makedepend}; "\@rem" -}
        @$(ECHO) "Warning: consider configuring with no-makedepend, because if"
        @$(ECHO) "         target system doesn't have $(PERL),"
        @$(ECHO) "         then make will fail..."
-       @{- output_on() if $disabled{makedepend}; "" -}
+       @{- output_on() if $disabled{makedepend}; "\@rem" -}
 
 all: build_sw build_docs
 
 test: tests
 {- dependmagic('tests'); -}: build_programs_nodep build_modules_nodep copy-utils
-       @{- output_off() if $disabled{tests}; "" -}
+       @{- output_off() if $disabled{tests}; "\@rem" -}
        cmd /C "set "SRCTOP=$(SRCDIR)" & set "BLDTOP=$(BLDDIR)" & set "PERL=$(PERL)" & set "FIPSKEY=$(FIPSKEY)" & "$(PERL)" "$(SRCDIR)\test\run_tests.pl" $(TESTS)"
        @{- if ($disabled{tests}) { output_on(); } else { output_off(); } "" -}
        @$(ECHO) "Tests are not supported with your chosen Configure options"
-       @{- output_on() if !$disabled{tests}; "" -}
+       @{- output_on() if !$disabled{tests}; "\@rem" -}
 
 list-tests:
-       @{- output_off() if $disabled{tests}; "" -}
+       @{- output_off() if $disabled{tests}; "\@rem" -}
        @cmd /C "set "SRCTOP=$(SRCDIR)" & "$(PERL)" "$(SRCDIR)\test\run_tests.pl" list"
        @{- if ($disabled{tests}) { output_on(); } else { output_off(); } "" -}
        @$(ECHO) "Tests are not supported with your chosen Configure options"
-       @{- output_on() if !$disabled{tests}; "" -}
+       @{- output_on() if !$disabled{tests}; "\@rem" -}
 
 install: install_sw install_ssldirs install_docs
 
@@ -465,11 +465,11 @@ clean: libclean
        -rd /Q /S $(HTMLDOCS3_BLDDIRS)
        -rd /Q /S $(HTMLDOCS5_BLDDIRS)
        -rd /Q /S $(HTMLDOCS7_BLDDIRS)
-       {- join("\n\t", map { "-del /Q /F $_" } @PROGRAMS) -}
-       {- join("\n\t", map { "-del /Q /F $_" } @MODULES) -}
-       {- join("\n\t", map { "-del /Q /F $_" } @SCRIPTS) -}
-       {- join("\n\t", map { "-del /Q /F $_" } @GENERATED_MANDATORY) -}
-       {- join("\n\t", map { "-del /Q /F $_" } @GENERATED) -}
+       {- join("\n\t", map { "-del /Q /F $_" } @PROGRAMS) || "\@rem" -}
+       {- join("\n\t", map { "-del /Q /F $_" } @MODULES) || "\@rem" -}
+       {- join("\n\t", map { "-del /Q /F $_" } @SCRIPTS) || "\@rem" -}
+       {- join("\n\t", map { "-del /Q /F $_" } @GENERATED_MANDATORY) || "\@rem" -}
+       {- join("\n\t", map { "-del /Q /F $_" } @GENERATED) || "\@rem" -}
        -del /Q /S /F *.d *.obj *.pdb *.ilk *.manifest
        -del /Q /S /F engines\*.lib engines\*.exp
        -del /Q /S /F apps\*.lib apps\*.rc apps\*.res apps\*.exp
@@ -481,9 +481,9 @@ distclean: clean
        -del /Q /F makefile
 
 depend:
-       @ {- output_off() if $disabled{makedepend}; "" -}
+       @ {- output_off() if $disabled{makedepend}; "\@rem" -}
        @ "$(PERL)" "$(SRCDIR)\util\add-depends.pl" "{- $target{makedep_scheme} -}"
-       @ {- output_on() if $disabled{makedepend}; "" -}
+       @ {- output_on() if $disabled{makedepend}; "\@rem" -}
 
 # Install helper targets #############################################