runtime(doc): update Makefile and make it portable between GNU and BSD
by removing the non-portable GNU variable and using $? instead
Note: this only works for rules with single dependencies.
closes: #15493
Signed-off-by: RestorerZ <restorer@mail2k.ru>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/Makefile b/runtime/doc/Makefile
index 38f5053..785128e 100644
--- a/runtime/doc/Makefile
+++ b/runtime/doc/Makefile
@@ -35,19 +35,19 @@
$(CC) doctags.c -o doctags
vim.man: vim.1
- nroff -man $< | sed -e s/.//g > $@
+ nroff -man $? | sed -e s/.//g > $@
evim.man: evim.1
- nroff -man $< | sed -e s/.//g > $@
+ nroff -man $? | sed -e s/.//g > $@
vimdiff.man: vimdiff.1
- nroff -man $< | sed -e s/.//g > $@
+ nroff -man $? | sed -e s/.//g > $@
vimtutor.man: vimtutor.1
- nroff -man $< | sed -e s/.//g > $@
+ nroff -man $? | sed -e s/.//g > $@
xxd.man: xxd.1
- nroff -man $< | sed -e s/.//g > $@
+ nroff -man $? | sed -e s/.//g > $@
uganda.nsis.txt : uganda.???
for dpn in $?; do \
@@ -74,10 +74,10 @@
# index.html is the starting point for HTML, but for the help files it is
# help.txt. Therefore use vimindex.html for index.txt.
index.html: help.txt
- $(AWK) -f makehtml.awk $< >$@
+ $(AWK) -f makehtml.awk $? >$@
vimindex.html: index.txt
- $(AWK) -f makehtml.awk $< >$@
+ $(AWK) -f makehtml.awk $? >$@
tags.ref tags.html: tags
$(AWK) -f maketags.awk tags >tags.html
@@ -151,88 +151,91 @@
os_win32.txt:
touch $@
-# Note that $< works with GNU make while $> works for BSD make.
-# Is there a solution that works for both??
+# In *BSD, the variable '$<' is used in suffix-transformation rules (in GNU this
+# is called "implicit rules", and in MS Windows it is called "inference rules").
+# For code portability, it is better to use the '$?' variable for explicit rules.
+# Especially since there is only one dependency and it should presumably always
+# be newer than the target file.
vim-da.UTF-8.1: vim-da.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vimdiff-da.UTF-8.1: vimdiff-da.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vimtutor-da.UTF-8.1: vimtutor-da.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vim-de.UTF-8.1: vim-de.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vim-fr.UTF-8.1: vim-fr.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
evim-fr.UTF-8.1: evim-fr.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vimdiff-fr.UTF-8.1: vimdiff-fr.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vimtutor-fr.UTF-8.1: vimtutor-fr.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
xxd-fr.UTF-8.1: xxd-fr.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vim-it.UTF-8.1: vim-it.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
evim-it.UTF-8.1: evim-it.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vimdiff-it.UTF-8.1: vimdiff-it.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vimtutor-it.UTF-8.1: vimtutor-it.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
xxd-it.UTF-8.1: xxd-it.1
- iconv -f latin1 -t utf-8 $< >$@
+ iconv -f latin1 -t UTF-8 $? >$@
vim-pl.UTF-8.1: vim-pl.1
- iconv -f latin2 -t utf-8 $< >$@
+ iconv -f latin2 -t UTF-8 $? >$@
evim-pl.UTF-8.1: evim-pl.1
- iconv -f latin2 -t utf-8 $< >$@
+ iconv -f latin2 -t UTF-8 $? >$@
vimdiff-pl.UTF-8.1: vimdiff-pl.1
- iconv -f latin2 -t utf-8 $< >$@
+ iconv -f latin2 -t UTF-8 $? >$@
vimtutor-pl.UTF-8.1: vimtutor-pl.1
- iconv -f latin2 -t utf-8 $< >$@
+ iconv -f latin2 -t UTF-8 $? >$@
xxd-pl.UTF-8.1: xxd-pl.1
- iconv -f latin2 -t utf-8 $< >$@
+ iconv -f latin2 -t UTF-8 $? >$@
vim-ru.UTF-8.1: vim-ru.1
- iconv -f KOI8-R -t utf-8 $< >$@
+ iconv -f KOI8-R -t UTF-8 $? >$@
evim-ru.UTF-8.1: evim-ru.1
- iconv -f KOI8-R -t utf-8 $< >$@
+ iconv -f KOI8-R -t UTF-8 $? >$@
vimdiff-ru.UTF-8.1: vimdiff-ru.1
- iconv -f KOI8-R -t utf-8 $< >$@
+ iconv -f KOI8-R -t UTF-8 $? >$@
vimtutor-ru.UTF-8.1: vimtutor-ru.1
- iconv -f KOI8-R -t utf-8 $< >$@
+ iconv -f KOI8-R -t UTF-8 $? >$@
xxd-ru.UTF-8.1: xxd-ru.1
- iconv -f KOI8-R -t utf-8 $< >$@
+ iconv -f KOI8-R -t UTF-8 $? >$@
vim-tr.UTF-8.1: vim-tr.1
- iconv -f latin5 -t utf-8 $< >$@
+ iconv -f latin5 -t UTF-8 $? >$@
evim-tr.UTF-8.1: evim-tr.1
- iconv -f latin5 -t utf-8 $< >$@
+ iconv -f latin5 -t UTF-8 $? >$@
vimdiff-tr.UTF-8.1: vimdiff-tr.1
- iconv -f latin5 -t utf-8 $< >$@
+ iconv -f latin5 -t UTF-8 $? >$@
vimtutor-tr.UTF-8.1: vimtutor-tr.1
- iconv -f latin5 -t utf-8 $< >$@
+ iconv -f latin5 -t UTF-8 $? >$@