grub/gentpl.py
BVK Chaitanya a60f6ee1ac cleanup
2010-06-03 11:52:33 +05:30

469 lines
20 KiB
Python

#! /usr/bin/python
#
# This is the python script used to generate Makefile.tpl
#
GRUB_PLATFORMS = [ "emu", "i386_pc", "i386_efi", "i386_qemu", "i386_coreboot",
"i386_multiboot", "i386_ieee1275", "x86_64_efi",
"mips_yeeloong", "sparc64_ieee1275",
"powerpc_ieee1275" ]
GROUPS = {}
GROUPS["i386"] = [ "i386_pc", "i386_efi", "i386_qemu", "i386_coreboot", "i386_multiboot", "i386_ieee1275" ]
GROUPS["x86_64"] = [ "x86_64_efi" ]
GROUPS["mips"] = [ "mips_yeeloong" ]
GROUPS["sparc64"] = [ "sparc64_ieee1275" ]
GROUPS["powerpc"] = [ "powerpc_ieee1275" ]
GROUPS["x86"] = GROUPS["i386"] + GROUPS["x86_64"]
GROUPS["x86_efi"] = [ "i386_efi", "x86_64_efi" ]
GROUPS["common"] = GRUB_PLATFORMS[:]
GROUPS["nonemu"] = GRUB_PLATFORMS[:]
GROUPS["nonemu"].remove("emu")
#
# Create platform => groups reverse map, where groups covering that
# platform are ordered by their sizes
#
RMAP = {}
for platform in GRUB_PLATFORMS:
# initialize with platform itself as a group
RMAP[platform] = [ platform ]
for k in GROUPS.keys():
v = GROUPS[k]
# skip groups that don't cover this platform
if platform not in v: continue
bigger = []
smaller = []
# partition currently known groups based on their size
for group in RMAP[platform]:
if group in GRUB_PLATFORMS: smaller.append(group)
elif len(GROUPS[group]) < len(v): smaller.append(group)
else: bigger.append(group)
# insert in the middle
RMAP[platform] = smaller + [ k ] + bigger
#
# Global variables
#
GVARS = []
def gvar_add(var, value):
if var not in GVARS:
GVARS.append(var)
return var + " += " + value + "\n"
def global_variable_initializers():
r = ""
for var in GVARS:
r += var + " ?= \n"
return r
#
# Per PROGRAM/SCRIPT variables
#
def var_set(var, value):
return var + " = " + value + "\n"
def var_add(var, value):
return var + " += " + value + "\n"
#
# Autogen constructs
#
def if_tag(tag, closure):
return "[+ IF " + tag + " +]" + closure() + "[+ ENDIF +]"
def if_tag_defined(tag, closure):
return "[+ IF " + tag + " defined +]" + closure() + "[+ ENDIF +]"
def for_tag(tag, closure):
return "[+ FOR ." + tag + " +]" + closure() + "[+ ENDFOR +]"
def collect_values(tag, prefix=""):
return for_tag(tag, lambda: prefix + "[+ ." + tag + " +] ")
def each_group(platform, suffix, closure):
r = None
for group in RMAP[platform]:
if r == None:
r = "[+ IF ." + group + suffix + " +]"
else:
r += "[+ ELIF ." + group + suffix + " +]"
r += closure(group)
if r:
r += "[+ ELSE +]"
r += closure(None)
r += "[+ ENDIF +]"
else:
r = closure(None)
return r
def each_platform(closure):
r = ""
for platform in GRUB_PLATFORMS:
for group in RMAP[platform]:
if group == RMAP[platform][0]:
r += "[+ IF ." + group + " defined +]"
else:
r += "[+ ELIF ." + group + " defined +]"
r += "if COND_" + platform + "\n"
r += closure(platform)
r += "endif\n"
r += "[+ ENDIF +]"
return r
def canonical_name(): return "[+ % name `echo -n %s | sed -e 's/[^0-9A-Za-z@_]/_/g'` +]"
def canonical_module(): return canonical_name() + "_module"
def canonical_kernel(): return canonical_name() + "_img"
def canonical_image(): return canonical_name() + "_image"
def shared_sources(prefix=""): return collect_values("shared", prefix)
def shared_nodist_sources(prefix=""): return collect_values("nodist_shared", prefix)
def default_sources(prefix=""): return collect_values("source", prefix)
def default_nodist_sources(prefix=""): return collect_values("nodist", prefix)
def default_ldadd(): return collect_values("ldadd")
def default_cflags(): return collect_values("cflags")
def default_ldflags(): return collect_values("ldflags")
def default_cppflags(): return collect_values("cppflags")
def default_ccasflags(): return collect_values("ccasflags")
def default_extra_dist(): return collect_values("extra_dist")
def group_sources(group, prefix=""): return collect_values(group, prefix) if group else default_sources(prefix)
def group_nodist_sources(group, prefix=""): return collect_values(group + "_nodist", prefix) if group else default_nodist_sources(prefix)
def platform_sources(platform, prefix=""): return each_group(platform, "", lambda g: collect_values(g, prefix) if g else default_sources(prefix))
def platform_nodist_sources(platform, prefix=""): return each_group(platform, "_nodist", lambda g: collect_values(g + "_nodist", prefix) if g else default_nodist_sources(prefix))
def platform_ldadd(platform): return each_group(platform, "_ldadd", lambda g: collect_values(g + "_ldadd") if g else default_ldadd())
def platform_cflags(platform): return each_group(platform, "_cflags", lambda g: collect_values(g + "_cflags") if g else default_cflags())
def platform_ldflags(platform): return each_group(platform, "_ldflags", lambda g: collect_values(g + "_ldflags") if g else default_ldflags())
def platform_cppflags(platform): return each_group(platform, "_cppflags", lambda g: collect_values(g + "_cppflags") if g else default_cppflags())
def platform_ccasflags(platform): return each_group(platform, "_ccasflags", lambda g: collect_values(g + "_ccasflags") if g else default_ccasflags())
def platform_extra_dist(platform): return each_group(platform, "_extra_dist", lambda g: collect_values(g + "_extra_dist") if g else default_extra_dist())
def platform_format(platform): return each_group(platform, "_format", lambda g: collect_values(g + "_format") if g else "binary")
def module(platform):
r = gvar_add("noinst_PROGRAMS", "[+ name +].module")
r += gvar_add("MODULE_FILES", "[+ name +].module")
r += var_set(canonical_module() + "_SOURCES", platform_sources(platform) + "## platform sources")
r += var_add(canonical_module() + "_SOURCES", shared_sources() + "## shared sources")
r += var_set("nodist_" + canonical_module() + "_SOURCES", platform_nodist_sources(platform) + "## platform nodist sources")
r += var_add("nodist_" + canonical_module() + "_SOURCES", shared_nodist_sources() + "## shared nodist sources")
r += var_set(canonical_module() + "_LDADD", platform_ldadd(platform))
r += var_set(canonical_module() + "_CFLAGS", "$(AM_CFLAGS) $(CFLAGS_MODULE) " + platform_cflags(platform))
r += var_set(canonical_module() + "_LDFLAGS", "$(AM_LDFLAGS) $(LDFLAGS_MODULE) " + platform_ldflags(platform))
r += var_set(canonical_module() + "_CPPFLAGS", "$(AM_CPPFLAGS) $(CPPFLAGS_MODULE) " + platform_cppflags(platform))
r += var_set(canonical_module() + "_CCASFLAGS", "$(AM_CCASFLAGS) $(CCASFLAGS_MODULE) " + platform_ccasflags(platform))
r += gvar_add("EXTRA_DIST", platform_extra_dist(platform))
r += gvar_add("BUILT_SOURCES", "$(nodist_" + canonical_module() + "_SOURCES)")
r += gvar_add("CLEANFILES", "$(nodist_" + canonical_module() + "_SOURCES)")
r += gvar_add("DEF_FILES", "def-[+ name +].lst")
r += gvar_add("UND_FILES", "und-[+ name +].lst")
r += gvar_add("MOD_FILES", "[+ name +].mod")
r += gvar_add("platform_DATA", "[+ name +].mod")
r += gvar_add("CLEANFILES", "def-[+ name +].lst und-[+ name +].lst mod-[+ name +].c mod-[+ name +].o [+ name +].mod")
r += gvar_add("COMMAND_FILES", "command-[+ name +].lst")
r += gvar_add("FS_FILES", "fs-[+ name +].lst")
r += gvar_add("VIDEO_FILES", "video-[+ name +].lst")
r += gvar_add("PARTMAP_FILES", "partmap-[+ name +].lst")
r += gvar_add("HANDLER_FILES", "handler-[+ name +].lst")
r += gvar_add("PARTTOOL_FILES", "parttool-[+ name +].lst")
r += gvar_add("TERMINAL_FILES", "terminal-[+ name +].lst")
r += gvar_add("CLEANFILES", "command-[+ name +].lst fs-[+ name +].lst")
r += gvar_add("CLEANFILES", "handler-[+ name +].lst terminal-[+ name +].lst")
r += gvar_add("CLEANFILES", "video-[+ name +].lst partmap-[+ name +].lst parttool-[+ name +].lst")
r += gvar_add("CLEANFILES", "[+ name +].pp")
r += """
[+ name +].pp: $(""" + canonical_module() + """_SOURCES) $(nodist_""" + canonical_module() + """_SOURCES)
$(TARGET_CPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(""" + canonical_module() + """_CPPFLAGS) $(CPPFLAGS) $^ > $@ || (rm -f $@; exit 1)
def-[+ name +].lst: [+ name +].module
if test x$(USE_APPLE_CC_FIXES) = xyes; then \
$(NM) -g -P -p $< | grep -E '^[a-zA-Z0-9_]* [TDS]' | sed "s/^\\([^ ]*\\).*/\\1 [+ name +]/" >> $@; \
else \
$(NM) -g --defined-only -P -p $< | sed "s/^\\([^ ]*\\).*/\\1 [+ name +]/" >> $@; \
fi
und-[+ name +].lst: [+ name +].module
$(NM) -u -P -p $< | sed "s/^\\([^ ]*\\).*/\\1 [+ name +]/" >> $@
mod-[+ name +].c: [+ name +].module $(top_builddir)/moddep.lst $(top_srcdir)/genmodsrc.sh
sh $(top_srcdir)/genmodsrc.sh [+ name +] $(top_builddir)/moddep.lst > $@ || (rm -f $@; exit 1)
mod-[+ name +].o: mod-[+ name +].c
$(TARGET_CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(CPPFLAGS_MODULE) $(CPPFLAGS) $(CFLAGS_MODULE) $(CFLAGS) -c -o $@ $<
[+ name +].mod: [+ name +].module mod-[+ name +].o
if test x$(USE_APPLE_CC_FIXES) = xyes; then \
$(CCLD) $(LDFLAGS_MODULE) $(LDFLAGS) -o $@.bin $^; \
$(OBJCONV) -f$(TARGET_MODULE_FORMAT) -nr:_grub_mod_init:grub_mod_init -nr:_grub_mod_fini:grub_mod_fini -wd1106 -nu -nd $@.bin $@; \
rm -f $@.bin; \
else \
$(CCLD) -o $@ $(LDFLAGS_MODULE) $(LDFLAGS) $^; \
if test ! -z '$(TARGET_OBJ2ELF)'; then $(TARGET_OBJ2ELF) $@ || (rm -f $@; exit 1); fi; \
$(STRIP) --strip-unneeded -K grub_mod_init -K grub_mod_fini -K _grub_mod_init -K _grub_mod_fini -R .note -R .comment $@; \
fi
command-[+ name +].lst: [+ name +].pp $(top_srcdir)/gencmdlist.sh
cat $< | sh $(top_srcdir)/gencmdlist.sh [+ name +] > $@ || (rm -f $@; exit 1)
fs-[+ name +].lst: [+ name +].pp $(top_srcdir)/genfslist.sh
cat $< | sh $(top_srcdir)/genfslist.sh [+ name +] > $@ || (rm -f $@; exit 1)
video-[+ name +].lst: [+ name +].pp $(top_srcdir)/genvideolist.sh
cat $< | sh $(top_srcdir)/genvideolist.sh [+ name +] > $@ || (rm -f $@; exit 1)
partmap-[+ name +].lst: [+ name +].pp $(top_srcdir)/genpartmaplist.sh
cat $< | sh $(top_srcdir)/genpartmaplist.sh [+ name +] > $@ || (rm -f $@; exit 1)
parttool-[+ name +].lst: [+ name +].pp $(top_srcdir)/genparttoollist.sh
cat $< | sh $(top_srcdir)/genparttoollist.sh [+ name +] > $@ || (rm -f $@; exit 1)
handler-[+ name +].lst: [+ name +].pp $(top_srcdir)/genhandlerlist.sh
cat $< | sh $(top_srcdir)/genhandlerlist.sh [+ name +] > $@ || (rm -f $@; exit 1)
terminal-[+ name +].lst: [+ name +].pp $(top_srcdir)/genterminallist.sh
cat $< | sh $(top_srcdir)/genterminallist.sh [+ name +] > $@ || (rm -f $@; exit 1)
"""
return r
def rule(target, source, cmd):
if cmd[0] == "\n":
return "\n" + target + ": " + source + cmd.replace("\n", "\n\t") + "\n"
else:
return "\n" + target + ": " + source + "\n\t" + cmd.replace("\n", "\n\t") + "\n"
def image_nostrip(platform):
return if_tag_defined("image_nostrip." + platform, lambda: rule("[+ name +].img", "[+ name +].exec", "cp $< $@"))
def image_strip(platform):
return if_tag_defined("image_strip." + platform, lambda: rule("[+ name +].img", "[+ name +].exec", "$(STRIP) -o $@ -R .rel.dyn -R .reginfo -R .note -R .comment $<"))
def image_strip_keep_kernel(platform):
return if_tag_defined("image_strip_keep_kernel." + platform, lambda: rule("[+ name +].img", "[+ name +].exec", "$(STRIP) -o $@ --strip-unneeded -K start -R .note -R .comment $<"))
def image_strip_macho2img(platform):
return if_tag_defined("image_strip_macho2img." + platform, lambda: rule("[+ name +].img", "[+ name +].exec", """
if test "x$(TARGET_APPLE_CC)" = x1; then \
$(MACHO2IMG) --bss $< $@ || exit 1; \
else \
$(STRIP) -o $@ -O binary --strip-unneeded -R .note -R .comment -R .note.gnu.build-id -R .reginfo -R .rel.dyn $< || exit 1; \
fi
"""))
def kernel(platform):
r = gvar_add("noinst_PROGRAMS", "[+ name +].img")
r += var_set(canonical_kernel() + "_SOURCES", platform_sources(platform))
r += var_add(canonical_kernel() + "_SOURCES", shared_sources())
r += var_set("nodist_" + canonical_kernel() + "_SOURCES", platform_nodist_sources(platform) + "## platform nodist sources")
r += var_add("nodist_" + canonical_kernel() + "_SOURCES", shared_nodist_sources() + "## shared nodist sources")
r += var_set(canonical_kernel() + "_LDADD", platform_ldadd(platform))
r += var_set(canonical_kernel() + "_CFLAGS", "$(AM_CFLAGS) $(CFLAGS_KERNEL) " + platform_cflags(platform))
r += var_set(canonical_kernel() + "_LDFLAGS", "$(AM_LDFLAGS) $(LDFLAGS_KERNEL) " + platform_ldflags(platform))
r += var_set(canonical_kernel() + "_CPPFLAGS", "$(AM_CPPFLAGS) $(CPPFLAGS_KERNEL) " + platform_cppflags(platform))
r += var_set(canonical_kernel() + "_CCASFLAGS", "$(AM_CCASFLAGS) $(CCASFLAGS_KERNEL) " + platform_ccasflags(platform))
r += gvar_add("EXTRA_DIST", platform_extra_dist(platform))
r += gvar_add("BUILT_SOURCES", "$(nodist_" + canonical_kernel() + "_SOURCES)")
r += gvar_add("CLEANFILES", "$(nodist_" + canonical_kernel() + "_SOURCES)")
r += gvar_add("platform_DATA", "[+ name +].img")
return r
def image(platform):
r = gvar_add("noinst_PROGRAMS", "[+ name +].image")
r += var_set(canonical_image() + "_SOURCES", platform_sources(platform))
r += var_add(canonical_image() + "_SOURCES", shared_sources())
r += var_set("nodist_" + canonical_image() + "_SOURCES", platform_nodist_sources(platform) + "## platform nodist sources")
r += var_add("nodist_" + canonical_image() + "_SOURCES", shared_nodist_sources() + "## shared nodist sources")
r += var_set(canonical_image() + "_LDADD", platform_ldadd(platform))
r += var_set(canonical_image() + "_CFLAGS", "$(AM_CFLAGS) $(CFLAGS_IMAGE) " + platform_cflags(platform))
r += var_set(canonical_image() + "_LDFLAGS", "$(AM_LDFLAGS) $(LDFLAGS_IMAGE) " + platform_ldflags(platform))
r += var_set(canonical_image() + "_CPPFLAGS", "$(AM_CPPFLAGS) $(CPPFLAGS_IMAGE) " + platform_cppflags(platform))
r += var_set(canonical_image() + "_CCASFLAGS", "$(AM_CCASFLAGS) $(CCASFLAGS_IMAGE) " + platform_ccasflags(platform))
r += gvar_add("EXTRA_DIST", platform_extra_dist(platform))
r += gvar_add("BUILT_SOURCES", "$(nodist_" + canonical_image() + "_SOURCES)")
r += gvar_add("CLEANFILES", "$(nodist_" + canonical_image() + "_SOURCES)")
r += gvar_add("platform_DATA", "[+ name +].img")
r += gvar_add("CLEANFILES", "[+ name +].img")
r += rule("[+ name +].img", "[+ name +].image", """
if test x$(USE_APPLE_CC_FIXES) = xyes; then \
$(MACHO2IMG) $< $@; \
else \
$(OBJCOPY) -O """ + platform_format(platform) + """ --strip-unneeded -R .note -R .comment -R .note.gnu.build-id -R .reginfo -R .rel.dyn $< $@; \
fi
""")
return r
def library(platform):
r = gvar_add("noinst_LIBRARIES", "[+ name +]")
r += var_set(canonical_name() + "_SOURCES", platform_sources(platform))
r += var_add(canonical_name() + "_SOURCES", shared_sources())
r += var_set("nodist_" + canonical_name() + "_SOURCES", platform_nodist_sources(platform))
r += var_add("nodist_" + canonical_name() + "_SOURCES", shared_nodist_sources())
r += var_set(canonical_name() + "_CFLAGS", "$(AM_CFLAGS) $(CFLAGS_LIBRARY) " + platform_cflags(platform))
r += var_set(canonical_name() + "_CPPFLAGS", "$(AM_CPPFLAGS) $(CPPFLAGS_LIBRARY) " + platform_cppflags(platform))
r += var_set(canonical_name() + "_CCASFLAGS", "$(AM_CCASFLAGS) $(CCASFLAGS_LIBRARY) " + platform_ccasflags(platform))
r += gvar_add("EXTRA_DIST", platform_extra_dist(platform))
r += gvar_add("BUILT_SOURCES", "$(nodist_" + canonical_name() + "_SOURCES)")
r += gvar_add("CLEANFILES", "$(nodist_" + canonical_name() + "_SOURCES)")
return r
def installdir(default="bin"):
return "[+ IF installdir +][+ installdir +][+ ELSE +]" + default + "[+ ENDIF +]"
def manpage():
r = "if COND_MAN_PAGES\n"
r += gvar_add("man_MANS", "[+ name +].[+ mansection +]\n")
r += rule("[+ name +].[+ mansection +]", "", """
$(MAKE) $(AM_MAKEFLAGS) [+ name +]
chmod a+x [+ name +]
$(HELP2MAN) --section=[+ mansection +] -o $@ ./[+ name +]
""")
r += gvar_add("CLEANFILES", "[+ name +].[+ mansection +]")
r += "endif\n"
return r
def program(platform, test=False):
if test:
r = gvar_add("check_PROGRAMS", "[+ name +]")
else:
r = gvar_add(installdir() + "_PROGRAMS", "[+ name +]")
r += var_set(canonical_name() + "_SOURCES", platform_sources(platform))
r += var_add(canonical_name() + "_SOURCES", shared_sources())
r += var_set("nodist_" + canonical_name() + "_SOURCES", platform_nodist_sources(platform))
r += var_add("nodist_" + canonical_name() + "_SOURCES", shared_nodist_sources())
r += var_set(canonical_name() + "_LDADD", platform_ldadd(platform))
r += var_set(canonical_name() + "_CFLAGS", "$(AM_CFLAGS) $(CFLAGS_PROGRAM) " + platform_cflags(platform))
r += var_set(canonical_name() + "_LDFLAGS", "$(AM_LDFLAGS) $(LDFLAGS_PROGRAM) " + platform_ldflags(platform))
r += var_set(canonical_name() + "_CPPFLAGS", "$(AM_CPPFLAGS) $(CPPFLAGS_PROGRAM) " + platform_cppflags(platform))
r += var_set(canonical_name() + "_CCASFLAGS", "$(AM_CCASFLAGS) $(CCASFLAGS_PROGRAM) " + platform_ccasflags(platform))
r += gvar_add("EXTRA_DIST", platform_extra_dist(platform))
r += gvar_add("BUILT_SOURCES", "$(nodist_" + canonical_name() + "_SOURCES)")
r += gvar_add("CLEANFILES", "$(nodist_" + canonical_name() + "_SOURCES)")
if test:
r += if_tag_defined("enable", lambda: gvar_add("TESTS", "[+ name +]"))
else:
r += if_tag("mansection", lambda: manpage())
return r
def test_program(platform):
return program(platform, True)
def data(platform):
r = gvar_add("EXTRA_DIST", platform_sources(platform))
r += gvar_add("EXTRA_DIST", platform_extra_dist(platform))
r += gvar_add(installdir() + "_DATA", platform_sources(platform))
return r
def script(platform, test=False):
if test:
r = gvar_add("check_SCRIPTS", "[+ name +]")
else:
r = gvar_add(installdir() + "_SCRIPTS", "[+ name +]")
r += rule("[+ name +]", "$(top_builddir)/config.status " + platform_sources(platform), """
$(top_builddir)/config.status --file=-:""" + platform_sources(platform) + """ \
| sed -e 's,@pkglib_DATA@,$(pkglib_DATA),g' > $@
chmod a+x [+ name +]
""")
r += gvar_add("CLEANFILES", "[+ name +]")
r += gvar_add("EXTRA_DIST", platform_sources(platform))
if test:
r += if_tag_defined("enable", lambda: gvar_add("TESTS", "[+ name +]"))
else:
r += if_tag("mansection", lambda: manpage())
return r
def test_script(platform):
return script(platform, True)
def with_enable_condition(x):
return "[+ IF enable +]if [+ enable +]\n" + x + "endif\n[+ ELSE +]" + x + "[+ ENDIF +]"
def module_rules():
return for_tag("module", lambda: with_enable_condition(each_platform(lambda p: module(p))))
def kernel_rules():
return for_tag("kernel", lambda: with_enable_condition(each_platform(lambda p: kernel(p))))
def image_rules():
return for_tag("image", lambda: with_enable_condition(each_platform(lambda p: image(p))))
def library_rules():
return for_tag("library", lambda: with_enable_condition(each_platform(lambda p: library(p))))
def program_rules():
return for_tag("program", lambda: with_enable_condition(each_platform(lambda p: program(p))))
def script_rules():
return for_tag("script", lambda: with_enable_condition(each_platform(lambda p: script(p))))
def data_rules():
return for_tag("data", lambda: with_enable_condition(each_platform(lambda p: data(p))))
def test_program_rules():
return for_tag("test_program", lambda: with_enable_condition(each_platform(lambda p: test_program(p))))
def test_script_rules():
return for_tag("test_script", lambda: with_enable_condition(each_platform(lambda p: test_script(p))))
print "[+ AutoGen5 template +]\n"
a = module_rules()
b = kernel_rules()
c = image_rules()
d = library_rules()
e = program_rules()
f = script_rules()
g = data_rules()
h = test_program_rules()
i = test_script_rules()
z = global_variable_initializers()
print z # initializer for all vars
print a
print b
print c
print d
print e
print f
print g
print h
print i
print """.PRECIOUS: modules.am
$(srcdir)/modules.am: $(srcdir)/modules.def $(top_srcdir)/Makefile.tpl
autogen -T $(top_srcdir)/Makefile.tpl $(srcdir)/modules.def | sed -e '/^$$/{N;/^\\n$$/D;}' > $@.new || (rm -f $@.new; exit 1)
mv $@.new $@
.PRECIOUS: $(top_srcdir)/Makefile.tpl
$(top_srcdir)/Makefile.tpl: $(top_srcdir)/gentpl.py
python $(top_srcdir)/gentpl.py | sed -e '/^$$/{N;/^\\n$$/D;}' > $@.new || (rm -f $@.new; exit 1)
mv $@.new $@
"""