perf build: Address stray '\' before # that is warned about since grep 3.8
To address this grep 3.8 warning: grep: warning: stray \ before # We needed to remove the '' around the grep expression and keep the \ before # so that it is escaped by the $(shell grep ...) and thus doesn't get to grep. We need that \ before the #, otherwise we get this: Makefile.perf:364: *** unterminated call to function 'shell': missing ')'. Stop. As everything after the # will be considered a comment. Removing the single quotes needs some more escaping so that _some_ of the escaped chars gets to grep, like the '\|' that becomes '\\\|´. Running on debian:10, where there is no libtraceevent-devel available, we get: Makefile.perf:367: *** PYTHON_EXT_SRCS= util/python.c ../lib/ctype.c util/cap.c util/evlist.c util/evsel.c util/evsel_fprintf.c util/perf_event_attr_fprintf.c util/cpumap.c util/memswap.c util/mmap.c util/namespaces.c ../lib/bitmap.c ../lib/find_bit.c ../lib/list_sort.c ../lib/hweight.c ../lib/string.c ../lib/vsprintf.c util/thread_map.c util/util.c util/cgroup.c util/parse-branch-options.c util/rblist.c util/counts.c util/print_binary.c util/strlist.c ../lib/rbtree.c util/string.c util/symbol_fprintf.c util/units.c util/affinity.c util/rwsem.c util/hashmap.c util/perf_regs.c util/fncache.c util/perf-regs-arch/perf_regs_aarch64.c util/perf-regs-arch/perf_regs_arm.c util/perf-regs-arch/perf_regs_csky.c util/perf-regs-arch/perf_regs_loongarch.c util/perf-regs-arch/perf_regs_mips.c util/perf-regs-arch/perf_regs_powerpc.c util/perf-regs-arch/perf_regs_riscv.c util/perf-regs-arch/perf_regs_s390.c util/perf-regs-arch/perf_regs_x86.c. Stop. make[1]: *** [Makefile.perf:242: sub-make] Error 2 I.e. both the comments and the util/trace-event.c were removed. When using: msg := $(error PYTHON_EXT_SRCS=$(PYTHON_EXT_SRCS)) While on the more recent fedora:38, with the new grep and make packages and libtraceevent-devel installed: Makefile.perf:367: *** PYTHON_EXT_SRCS= util/python.c ../lib/ctype.c util/cap.c util/evlist.c util/evsel.c util/evsel_fprintf.c util/perf_event_attr_fprintf.c util/cpumap.c util/memswap.c util/mmap.c util/namespaces.c ../lib/bitmap.c ../lib/find_bit.c ../lib/list_sort.c ../lib/hweight.c ../lib/string.c ../lib/vsprintf.c util/thread_map.c util/util.c util/cgroup.c util/parse-branch-options.c util/rblist.c util/counts.c util/print_binary.c util/strlist.c util/trace-event.c ../lib/rbtree.c util/string.c util/symbol_fprintf.c util/units.c util/affinity.c util/rwsem.c util/hashmap.c util/perf_regs.c util/fncache.c util/perf-regs-arch/perf_regs_aarch64.c util/perf-regs-arch/perf_regs_arm.c util/perf-regs-arch/perf_regs_csky.c util/perf-regs-arch/perf_regs_loongarch.c util/perf-regs-arch/perf_regs_mips.c util/perf-regs-arch/perf_regs_powerpc.c util/perf-regs-arch/perf_regs_riscv.c util/perf-regs-arch/perf_regs_s390.c util/perf-regs-arch/perf_regs_x86.c. Stop. make[1]: *** [Makefile.perf:242: sub-make] Error 2 make: *** [Makefile:113: install-bin] Error 2 make: Leaving directory '/home/acme/git/perf-tools-next/tools/perf' $ I.e. only the comments were removed. If we build it on the same fedora:38 system, but using NO_LIBTRACEEVENT=1 $ make NO_LIBTRACEEVENT=1 CORESIGHT=1 O=/tmp/build/$(basename $PWD) -C tools/perf install-bin Makefile.perf:367: *** PYTHON_EXT_SRCS= util/python.c ../lib/ctype.c util/cap.c util/evlist.c util/evsel.c util/evsel_fprintf.c util/perf_event_attr_fprintf.c util/cpumap.c util/memswap.c util/mmap.c util/namespaces.c ../lib/bitmap.c ../lib/find_bit.c ../lib/list_sort.c ../lib/hweight.c ../lib/string.c ../lib/vsprintf.c util/thread_map.c util/util.c util/cgroup.c util/parse-branch-options.c util/rblist.c util/counts.c util/print_binary.c util/strlist.c ../lib/rbtree.c util/string.c util/symbol_fprintf.c util/units.c util/affinity.c util/rwsem.c util/hashmap.c util/perf_regs.c util/fncache.c util/perf-regs-arch/perf_regs_aarch64.c util/perf-regs-arch/perf_regs_arm.c util/perf-regs-arch/perf_regs_csky.c util/perf-regs-arch/perf_regs_loongarch.c util/perf-regs-arch/perf_regs_mips.c util/perf-regs-arch/perf_regs_powerpc.c util/perf-regs-arch/perf_regs_riscv.c util/perf-regs-arch/perf_regs_s390.c util/perf-regs-arch/perf_regs_x86.c. Stop. make[1]: *** [Makefile.perf:242: sub-make] Error 2 make: *** [Makefile:113: install-bin] Error 2 make: Leaving directory '/home/acme/git/perf-tools-next/tools/perf' $ Both comments and the util/trace-event.c file removed. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Ian Rogers <irogers@google.com> Link: https://lore.kernel.org/r/ZTj6mfM9UqY2DggC@kernel.org Signed-off-by: Namhyung Kim <namhyung@kernel.org>
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@ -361,7 +361,7 @@ python-clean := $(call QUIET_CLEAN, python) $(RM) -r $(PYTHON_EXTBUILD) $(OUTPUT
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ifeq ($(CONFIG_LIBTRACEEVENT),y)
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PYTHON_EXT_SRCS := $(shell grep -v ^\# util/python-ext-sources)
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else
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PYTHON_EXT_SRCS := $(shell grep -v '^\#\|util/trace-event.c' util/python-ext-sources)
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PYTHON_EXT_SRCS := $(shell grep -v ^\#\\\|util/trace-event.c util/python-ext-sources)
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endif
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PYTHON_EXT_DEPS := util/python-ext-sources util/setup.py $(LIBAPI)
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