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mdbx-make: refine GNUmakefile to avoid bug of GNU Make 3.81
This commit is contained in:
Леонид Юрьев (Leonid Yuriev)
parent
c9dfb7d8c2
commit
eb3fc985d6
75
GNUmakefile
75
GNUmakefile
@ -6,6 +6,22 @@
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#
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################################################################################
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#
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# Basic internal definitios. For a customizable variables and options see below.
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#
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$(info // The GNU Make $(MAKE_VERSION))
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SHELL := $(shell env bash -c 'echo $$BASH')
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MAKE_VERx3 := $(shell printf "%3s%3s%3s" $(subst ., ,$(MAKE_VERSION)))
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make_lt_3_81 := $(shell expr "$(MAKE_VERx3)" "<" " 3 81")
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ifeq ($(make_lt_3_81),1)
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$(error Please use GNU Make 3.81 or above)
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endif
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make_lt_4_1 := $(shell expr "$(MAKE_VERx3)" "<" " 4 1")
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SRC_PROBE_C := $(shell [ -f mdbx.c ] && echo mdbx.c || echo src/osal.c)
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SRC_PROBE_CXX := $(shell [ -f mdbx.c++ ] && echo mdbx.c++ || echo src/mdbx.c++)
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UNAME := $(shell uname -s 2>/dev/null || echo Unknown)
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#
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################################################################################
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#
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# Use `make options` to list the available libmdbx build options.
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#
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# Note that the defaults should already be correct for most platforms;
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@ -13,39 +29,48 @@
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# in README and source code (see src/options.h) if you do.
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#
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SHELL := env bash
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# install sandbox
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DESTDIR ?=
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INSTALL ?= install
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# install prefixes (inside sandbox)
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prefix ?= /usr/local
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mandir ?= $(prefix)/man
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# lib/bin suffix for multiarch/biarch, e.g. '.x86_64'
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suffix ?=
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INSTALL ?= install
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# toolchain
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CC ?= gcc
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CXX ?= g++
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CFLAGS_EXTRA ?=
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LD ?= ld
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# build options
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MDBX_BUILD_OPTIONS ?=-DNDEBUG=1
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MDBX_BUILD_TIMESTAMP ?=$(shell date +%Y-%m-%dT%H:%M:%S%z)
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CFLAGS ?= $(strip $(eval CFLAGS := -std=gnu11 -O2 -g -Wall -Werror -Wextra -Wpedantic -ffunction-sections -fPIC -fvisibility=hidden -pthread -Wno-error=attributes $$(shell PROBE=$$$$([ -f mdbx.c ] && echo mdbx.c || echo src/osal.c); for opt in -fno-semantic-interposition -Wno-unused-command-line-argument -Wno-tautological-compare; do [ -z "$$$$($(CC) '-DMDBX_BUILD_FLAGS="probe"' $$$${opt} -c $$$${PROBE} -o /dev/null >/dev/null 2>&1 || echo failed)" ] && echo "$$$${opt} "; done)$(CFLAGS_EXTRA))$(CFLAGS))
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# Choosing C++ standard with deferred simple variable expansion trick
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CXXSTD ?= $(eval CXXSTD := $$(shell PROBE=$$$$([ -f mdbx.c++ ] && echo mdbx.c++ || echo src/mdbx.c++); for std in gnu++23 c++23 gnu++2b c++2b gnu++20 c++20 gnu++2a c++2a gnu++17 c++17 gnu++1z c++1z gnu++14 c++14 gnu++1y c++1y gnu+11 c++11 gnu++0x c++0x; do $(CXX) -std=$$$${std} -c $$$${PROBE} -o /dev/null 2>probe4std-$$$${std}.err >/dev/null && echo "-std=$$$${std}" && exit; done))$(CXXSTD)
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CXXFLAGS = $(strip $(CXXSTD) $(filter-out -std=gnu11,$(CFLAGS)))
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# TIP: Try append '--no-as-needed,-lrt' for ability to built with modern glibc, but then use with the old.
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LIBS ?= $(shell $(uname2libs))
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LDFLAGS ?= $(shell $(uname2ldflags))
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EXE_LDFLAGS ?= -pthread
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LIB_STDCXXFS ?= $(eval LIB_STDCXXFS := $$(shell echo 'int main(void) { MDBX_STD_FILESYSTEM_PATH probe; return probe.is_absolute(); }' | cat mdbx.h++ - | sed $$$$'1s/\xef\xbb\xbf//' | $(CXX) -x c++ $(CXXFLAGS) - -Wl,--allow-multiple-definition -lstdc++fs $(LIBS) $(LDFLAGS) $(EXE_LDFLAGS) -o /dev/null 2>probe4lstdfs.err >/dev/null && echo '-Wl,--allow-multiple-definition -lstdc++fs'))$(LIB_STDCXXFS)
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# probe and compose common compiler flags with variable expansion trick (seems this work two times per session for GNU Make 3.81)
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CFLAGS ?= $(strip $(eval CFLAGS := -std=gnu11 -O2 -g -Wall -Werror -Wextra -Wpedantic -ffunction-sections -fPIC -fvisibility=hidden -pthread -Wno-error=attributes $$(shell for opt in -fno-semantic-interposition -Wno-unused-command-line-argument -Wno-tautological-compare; do [ -z "$$$$($(CC) '-DMDBX_BUILD_FLAGS="probe"' $$$${opt} -c $(SRC_PROBE_C) -o /dev/null >/dev/null 2>&1 || echo failed)" ] && echo "$$$${opt} "; done)$(CFLAGS_EXTRA))$(CFLAGS))
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# choosing C++ standard with variable expansion trick (seems this work two times per session for GNU Make 3.81)
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CXXSTD ?= $(eval CXXSTD := $$(shell for std in gnu++23 c++23 gnu++2b c++2b gnu++20 c++20 gnu++2a c++2a gnu++17 c++17 gnu++1z c++1z gnu++14 c++14 gnu++1y c++1y gnu+11 c++11 gnu++0x c++0x; do $(CXX) -std=$$$${std} -c $(SRC_PROBE_CXX) -o /dev/null 2>probe4std-$$$${std}.err >/dev/null && echo "-std=$$$${std}" && exit; done))$(CXXSTD)
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CXXFLAGS ?= $(strip $(CXXSTD) $(filter-out -std=gnu11,$(CFLAGS)))
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# libraries adn options for linking
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EXE_LDFLAGS ?= -pthread
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ifeq ($(make_lt_4_1),1)
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# don't use variable expansion trick as workaround for bugs of GNU Make before 4.1
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LIBS ?= $(shell $(uname2libs))
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LDFLAGS ?= $(shell $(uname2ldflags))
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LIB_STDCXXFS ?= $(shell echo 'int main(void) { MDBX_STD_FILESYSTEM_PATH probe; return probe.is_absolute(); }' | cat mdbx.h++ - | sed $$'1s/\xef\xbb\xbf//' | $(CXX) -x c++ $(CXXFLAGS) -Wno-error - -Wl,--allow-multiple-definition -lstdc++fs $(LIBS) $(LDFLAGS) $(EXE_LDFLAGS) -o /dev/null 2>probe4lstdfs.err >/dev/null && echo '-Wl,--allow-multiple-definition -lstdc++fs')
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else
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# using variable expansion trick to avoid repeaded probes
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LIBS ?= $(eval LIBS := $$(shell $$(uname2libs)))$(LIBS)
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LDFLAGS ?= $(eval LDFLAGS := $$(shell $$(uname2ldflags)))$(LDFLAGS)
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LIB_STDCXXFS ?= $(eval LIB_STDCXXFS := $$(shell echo 'int main(void) { MDBX_STD_FILESYSTEM_PATH probe; return probe.is_absolute(); }' | cat mdbx.h++ - | sed $$$$'1s/\xef\xbb\xbf//' | $(CXX) -x c++ $(CXXFLAGS) -Wno-error - -Wl,--allow-multiple-definition -lstdc++fs $(LIBS) $(LDFLAGS) $(EXE_LDFLAGS) -o /dev/null 2>probe4lstdfs.err >/dev/null && echo '-Wl,--allow-multiple-definition -lstdc++fs'))$(LIB_STDCXXFS)
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endif
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################################################################################
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UNAME := $(shell uname -s 2>/dev/null || echo Unknown)
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define uname2sosuffix
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case "$(UNAME)" in
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Darwin*|Mach*) echo dylib;;
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@ -53,33 +78,37 @@ define uname2sosuffix
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*) echo so;;
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esac
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endef
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define uname2ldflags
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case "$(UNAME)" in
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CYGWIN*|MINGW*|MSYS*|Windows*)
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echo '-Wl,--gc-sections,-O1'
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echo '-Wl,--gc-sections,-O1';
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;;
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*)
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"$(LD)" --help 2>/dev/null | grep -q -- --gc-sections && echo '-Wl,--gc-sections,-z,relro,-O1'
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"$(LD)" --help 2>/dev/null | grep -q -- -dead_strip && echo '-Wl,-dead_strip'
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$(LD) --help 2>/dev/null | grep -q -- --gc-sections && echo '-Wl,--gc-sections,-z,relro,-O1';
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$(LD) --help 2>/dev/null | grep -q -- -dead_strip && echo '-Wl,-dead_strip';
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;;
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esac
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endef
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# TIP: try add the'-Wl, --no-as-needed,-lrt' for ability to built with modern glibc, but then use with the old.
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define uname2libs
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case "$(UNAME)" in
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CYGWIN*|MINGW*|MSYS*|Windows*)
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echo '-lm -lntdll -lwinmm'
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echo '-lm -lntdll -lwinmm';
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;;
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*SunOS*|*Solaris*)
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echo '-lm -lkstat -lrt'
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echo '-lm -lkstat -lrt';
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;;
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*Darwin*|OpenBSD*)
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echo '-lm'
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echo '-lm';
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;;
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*)
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echo '-lm -lrt'
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echo '-lm -lrt';
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;;
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esac
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endef
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SO_SUFFIX := $(shell $(uname2sosuffix))
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HEADERS := mdbx.h mdbx.h++
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LIBRARIES := libmdbx.a libmdbx.$(SO_SUFFIX)
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@ -161,7 +190,7 @@ show-options:
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@echo " CC =`which $(CC)` | `$(CC) --version | head -1`"
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@echo " CFLAGS =$(CFLAGS)"
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@echo " CXXFLAGS =$(CXXFLAGS)"
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@echo " LDFLAGS =$(LDFLAGS) $(LIBS) $(EXE_LDFLAGS)"
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@echo " LDFLAGS =$(LDFLAGS) $(LIB_STDCXXFS) $(LIBS) $(EXE_LDFLAGS)"
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@echo '$(TIP) Use `make help` to listing available targets.'
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options:
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