git/gitk-git/Makefile
Taylor Blau 728b9ac0c3 Makefile(s): avoid recipe prefix in conditional statements
In GNU Make commit 07fcee35 ([SV 64815] Recipe lines cannot contain
conditional statements, 2023-05-22) and following, conditional
statements may no longer be preceded by a tab character (which Make
refers to as the recipe prefix).

There are a handful of spots in our various Makefile(s) which will break
in a future release of Make containing 07fcee35. For instance, trying to
compile the pre-image of this patch with the tip of make.git results in
the following:

    $ make -v | head -1 && make
    GNU Make 4.4.90
    config.mak.uname:842: *** missing 'endif'.  Stop.

The kernel addressed this issue in 82175d1f9430 (kbuild: Replace tabs
with spaces when followed by conditionals, 2024-01-28). Address the
issues in Git's tree by applying the same strategy.

When a conditional word (ifeq, ifneq, ifdef, etc.) is preceded by one or
more tab characters, replace each tab character with 8 space characters
with the following:

    find . -type f -not -path './.git/*' -name Makefile -or -name '*.mak' |
      xargs perl -i -pe '
        s/(\t+)(ifn?eq|ifn?def|else|endif)/" " x (length($1) * 8) . $2/ge unless /\\$/
      '

The "unless /\\$/" removes any false-positives (like "\telse \"
appearing within a shell script as part of a recipe).

After doing so, Git compiles on newer versions of Make:

    $ make -v | head -1 && make
    GNU Make 4.4.90
    GIT_VERSION = 2.44.0.414.gfac1dc44ca9
    [...]

    $ echo $?
    0

Reported-by: Dario Gjorgjevski <dario.gjorgjevski@gmail.com>
Signed-off-by: Taylor Blau <me@ttaylorr.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2024-04-08 14:42:32 -07:00

81 lines
2.2 KiB
Makefile

# The default target of this Makefile is...
all::
prefix ?= $(HOME)
bindir ?= $(prefix)/bin
sharedir ?= $(prefix)/share
gitk_libdir ?= $(sharedir)/gitk/lib
msgsdir ?= $(gitk_libdir)/msgs
msgsdir_SQ = $(subst ','\'',$(msgsdir))
TCL_PATH ?= tclsh
TCLTK_PATH ?= wish
INSTALL ?= install
RM ?= rm -f
DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
bindir_SQ = $(subst ','\'',$(bindir))
TCLTK_PATH_SQ = $(subst ','\'',$(TCLTK_PATH))
### Detect Tck/Tk interpreter path changes
TRACK_TCLTK = $(subst ','\'',-DTCLTK_PATH='$(TCLTK_PATH_SQ)')
GIT-TCLTK-VARS: FORCE
@VARS='$(TRACK_TCLTK)'; \
if test x"$$VARS" != x"`cat $@ 2>/dev/null`" ; then \
echo 1>&2 " * new Tcl/Tk interpreter location"; \
echo "$$VARS" >$@; \
fi
## po-file creation rules
XGETTEXT ?= xgettext
ifdef NO_MSGFMT
MSGFMT ?= $(TCL_PATH) po/po2msg.sh
else
MSGFMT ?= msgfmt
ifneq ($(shell $(MSGFMT) --tcl -l C -d . /dev/null 2>/dev/null; echo $$?),0)
MSGFMT := $(TCL_PATH) po/po2msg.sh
endif
endif
PO_TEMPLATE = po/gitk.pot
ALL_POFILES = $(wildcard po/*.po)
ALL_MSGFILES = $(subst .po,.msg,$(ALL_POFILES))
ifndef V
QUIET = @
QUIET_GEN = $(QUIET)echo ' ' GEN $@ &&
endif
all:: gitk-wish $(ALL_MSGFILES)
install:: all
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(bindir_SQ)'
$(INSTALL) -m 755 gitk-wish '$(DESTDIR_SQ)$(bindir_SQ)'/gitk
$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(msgsdir_SQ)'
$(foreach p,$(ALL_MSGFILES), $(INSTALL) -m 644 $p '$(DESTDIR_SQ)$(msgsdir_SQ)' &&) true
uninstall::
$(foreach p,$(ALL_MSGFILES), $(RM) '$(DESTDIR_SQ)$(msgsdir_SQ)'/$(notdir $p) &&) true
$(RM) '$(DESTDIR_SQ)$(bindir_SQ)'/gitk
clean::
$(RM) gitk-wish po/*.msg GIT-TCLTK-VARS
gitk-wish: gitk GIT-TCLTK-VARS
$(QUIET_GEN)$(RM) $@ $@+ && \
sed -e '1,3s|^exec .* "$$0"|exec $(subst |,'\|',$(TCLTK_PATH_SQ)) "$$0"|' <gitk >$@+ && \
chmod +x $@+ && \
mv -f $@+ $@
$(PO_TEMPLATE): gitk
$(XGETTEXT) -kmc -LTcl -o $@ gitk
update-po:: $(PO_TEMPLATE)
$(foreach p, $(ALL_POFILES), echo Updating $p ; msgmerge -U $p $(PO_TEMPLATE) ; )
$(ALL_MSGFILES): %.msg : %.po
@echo Generating catalog $@
$(MSGFMT) --statistics --tcl $< -l $(basename $(notdir $<)) -d $(dir $@)
.PHONY: all install uninstall clean update-po
.PHONY: FORCE