mirror of
https://github.com/lm-sensors/lm-sensors.git
synced 2026-10-07 08:34:28 +07:00
Michal Suchanek
d60d6beebf
The dependencies for the parser files are not correct. There is baroque irule adding header prerequisites to the parser but the parser may still fail to build. The real dependency is on conf-parse.h There is no way to tell make that a rule produces two targets, such as parse.c and parse.h. However, the dependency files are generated by a separate rule, and not as a byproduct of building the source so they can themselves have dependencies. And dependencies they do have: when the header is generated it's in lib but when the header is missing while generating dependency file it's searched in top directory, and then the file that depends on it cannot be built because the header neveer appears there. When the generated .c file is addded as prerequisite to the dependency file that should reference the header generated together with the .c file the dependency file is generated correctly with the header present. This is not easily reproducible with the current source but adding conf-lex.h generated with conf-lex.c and including it in conf-parse.c now makes both conf-lex.ad depend on conf-parse.h and conf-lex.ad on conf-lex.h making the build 100% fail.
168 lines
7.2 KiB
Makefile
168 lines
7.2 KiB
Makefile
# Module.mk - Makefile for a Linux module for reading sensor data.
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# Copyright (c) 1998, 1999 Frodo Looijaard <frodol@dds.nl>
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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# MA 02110-1301 USA.
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# Note that MODULE_DIR (the directory in which this file resides) is a
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# 'simply expanded variable'. That means that its value is substituted
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# verbatim in the rules, until it is redefined.
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MODULE_DIR := lib
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LIB_DIR := $(MODULE_DIR)
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# The manual dirs and files
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LIBMAN3DIR := $(MANDIR)/man3
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LIBMAN3FILES := $(MODULE_DIR)/libsensors.3
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LIBMAN5DIR := $(MANDIR)/man5
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LIBMAN5FILES := $(MODULE_DIR)/sensors.conf.5
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# The main and minor version of the library
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# The library soname (major number) must be changed if and only if the interface is
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# changed in a backward incompatible way. The interface is defined by
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# the public header files - in this case they are error.h and sensors.h.
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LIBMAINVER := 5
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LIBMINORVER := 0.0
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LIBVER := $(LIBMAINVER).$(LIBMINORVER)
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# The static lib name, the shared lib name, and the internal ('so') name of
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# the shared lib.
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LIBSHBASENAME := libsensors.so
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LIBSHLIBNAME := libsensors.so.$(LIBVER)
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LIBSTLIBNAME := libsensors.a
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LIBSHSONAME := libsensors.so.$(LIBMAINVER)
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ifeq ($(BUILD_SHARED_LIB),1)
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LIBTARGETS := $(MODULE_DIR)/$(LIBSHLIBNAME) \
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$(MODULE_DIR)/$(LIBSHSONAME) $(MODULE_DIR)/$(LIBSHBASENAME)
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LIBDEP_FOR_PROGS := $(LIBSHBASENAME)
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else
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LIBDEP_FOR_PROGS := $(LIBSTLIBNAME)
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endif
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ifeq ($(BUILD_STATIC_LIB),1)
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LIBTARGETS += $(MODULE_DIR)/$(LIBSTLIBNAME)
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endif
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LIBCSOURCES := $(MODULE_DIR)/data.c $(MODULE_DIR)/general.c \
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$(MODULE_DIR)/error.c $(MODULE_DIR)/access.c \
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$(MODULE_DIR)/init.c $(MODULE_DIR)/sysfs.c
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LIBOTHEROBJECTS := $(MODULE_DIR)/conf-parse.o $(MODULE_DIR)/conf-lex.o
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LIBSHOBJECTS := $(LIBCSOURCES:.c=.lo) $(LIBOTHEROBJECTS:.o=.lo)
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LIBSTOBJECTS := $(LIBCSOURCES:.c=.ao) $(LIBOTHEROBJECTS:.o=.ao)
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LIBEXTRACLEAN := $(MODULE_DIR)/conf-parse.h $(MODULE_DIR)/conf-parse.c \
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$(MODULE_DIR)/conf-lex.c
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LIBHEADERFILES := $(MODULE_DIR)/error.h $(MODULE_DIR)/sensors.h
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# How to create the shared library
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$(MODULE_DIR)/$(LIBSHLIBNAME): $(LIBSHOBJECTS) $(LIB_DIR)/libsensors.map
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$(CC) -shared $(LDFLAGS) -Wl,--version-script=$(LIB_DIR)/libsensors.map -Wl,-soname,$(LIBSHSONAME) -o $@ $(LIBSHOBJECTS) -lc -lm
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$(MODULE_DIR)/$(LIBSHSONAME): $(MODULE_DIR)/$(LIBSHLIBNAME)
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$(RM) $@
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$(LN) $(LIBSHLIBNAME) $@
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$(MODULE_DIR)/$(LIBSHBASENAME): $(MODULE_DIR)/$(LIBSHLIBNAME)
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$(RM) $@
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$(LN) $(LIBSHLIBNAME) $@
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# And the static library
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$(MODULE_DIR)/$(LIBSTLIBNAME): $(LIBSTOBJECTS)
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$(RM) $@
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$(AR) rcvs $@ $^
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# Depencies for non-C sources
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$(MODULE_DIR)/conf-lex.ad: $(MODULE_DIR)/conf-parse.c
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$(MODULE_DIR)/conf-lex.ld: $(MODULE_DIR)/conf-parse.c
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# Include all dependency files
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INCLUDEFILES += $(LIBSHOBJECTS:.lo=.ld) $(LIBSTOBJECTS:.ao=.ad)
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REMOVELIBST := $(patsubst $(MODULE_DIR)/%,$(DESTDIR)$(LIBDIR)/%,$(LIB_DIR)/$(LIBSTLIBNAME))
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REMOVELIBSH := $(patsubst $(MODULE_DIR)/%,$(DESTDIR)$(LIBDIR)/%,$(LIB_DIR)/$(LIBSHLIBNAME))
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REMOVELNSO := $(DESTDIR)$(LIBDIR)/$(LIBSHSONAME)
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REMOVELNBS := $(DESTDIR)$(LIBDIR)/$(LIBSHBASENAME)
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REMOVELIBHF := $(patsubst $(MODULE_DIR)/%,$(DESTDIR)$(LIBINCLUDEDIR)/%,$(LIBHEADERFILES))
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REMOVEMAN3 := $(patsubst $(MODULE_DIR)/%,$(DESTDIR)$(LIBMAN3DIR)/%,$(LIBMAN3FILES))
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REMOVEMAN5 := $(patsubst $(MODULE_DIR)/%,$(DESTDIR)$(LIBMAN5DIR)/%,$(LIBMAN5FILES))
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all-lib: $(LIBTARGETS)
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user :: all-lib
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# Generate warnings if the install directory isn't in /etc/ld.so.conf
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# or if the library wasn't there before (which means ldconfig must be run).
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# Note that some ld.so's put /usr/lib and /lib first, others put them last,
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# so we can't make any assumptions.
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install-lib: all-lib
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$(MKDIR) $(DESTDIR)$(LIBDIR) $(DESTDIR)$(LIBINCLUDEDIR) $(DESTDIR)$(LIBMAN3DIR) $(DESTDIR)$(LIBMAN5DIR)
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@if [ -z "$(DESTDIR)" -a ! -e "$(LIBDIR)/$(LIBSHSONAME)" ] ; then \
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echo '******************************************************************************' ; \
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echo 'Warning: This is the first installation of the $(LIBSHSONAME)*' ; \
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echo ' library files in $(LIBDIR)!' ; \
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echo ' You must update the library cache or the userspace tools may fail' ; \
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echo ' or have unpredictable results!' ; \
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echo ' Run the following command: /sbin/ldconfig' ; \
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echo '******************************************************************************' ; \
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fi
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ifeq ($(BUILD_STATIC_LIB),1)
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$(INSTALL) -m 644 $(LIB_DIR)/$(LIBSTLIBNAME) $(DESTDIR)$(LIBDIR)
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endif
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ifeq ($(BUILD_SHARED_LIB),1)
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$(INSTALL) -m 755 $(LIB_DIR)/$(LIBSHLIBNAME) $(DESTDIR)$(LIBDIR)
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$(LN) $(LIBSHLIBNAME) $(DESTDIR)$(LIBDIR)/$(LIBSHSONAME)
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$(LN) $(LIBSHSONAME) $(DESTDIR)$(LIBDIR)/$(LIBSHBASENAME)
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endif
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@if [ -z "$(DESTDIR)" -a "$(LIBDIR)" != "/usr/lib" -a "$(LIBDIR)" != "/lib" ] ; then \
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if [ -e "/usr/lib/$(LIBSHSONAME)" -o -e "/usr/lib/$(LIBSHBASENAME)" ] ; then \
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echo '******************************************************************************' ; \
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echo 'Warning: You have at least one $(LIBSHBASENAME) library file in /usr/lib' ; \
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echo ' and the new library files are in $(LIBDIR)!' ; \
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echo ' These old files must be removed or the userspace tools may fail' ; \
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echo ' or have unpredictable results!' ; \
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echo ' Run the following command: rm /usr/lib/$(LIBSHBASENAME)*' ; \
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echo '******************************************************************************' ; \
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fi ; \
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cat /etc/ld.so.conf /etc/ld.so.conf.d/*.conf 2>/dev/null | grep -q '\(^\|[[:space:]:,]\)$(LIBDIR)\([[:space:]:,=]\|$$\)' || \
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( echo '******************************************************************************' ; \
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echo 'Warning: Library directory $(LIBDIR) is not in /etc/ld.so.conf!' ; \
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echo ' Add it and run /sbin/ldconfig for the userspace tools to work.' ; \
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echo '******************************************************************************' ) ; \
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fi
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$(INSTALL) -m 644 $(LIBHEADERFILES) $(DESTDIR)$(LIBINCLUDEDIR)
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$(INSTALL) -m 644 $(LIBMAN3FILES) $(DESTDIR)$(LIBMAN3DIR)
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$(INSTALL) -m 644 $(LIBMAN5FILES) $(DESTDIR)$(LIBMAN5DIR)
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$(LN) sensors.conf.5 $(DESTDIR)$(LIBMAN5DIR)/sensors3.conf.5
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user_install :: install-lib
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user_uninstall::
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$(RM) $(REMOVELIBSH) $(REMOVELNSO) $(REMOVELNBS)
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ifeq ($(BUILD_STATIC_LIB),1)
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$(RM) $(REMOVELIBST)
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endif
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$(RM) $(REMOVELIBHF) $(REMOVEMAN3) $(REMOVEMAN5)
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# Remove directory if empty, ignore failure
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$(RMDIR) $(DESTDIR)$(LIBINCLUDEDIR) 2> /dev/null || true
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clean-lib:
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$(RM) $(LIB_DIR)/*.ld $(LIB_DIR)/*.ad
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$(RM) $(LIB_DIR)/*.lo $(LIB_DIR)/*.ao
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$(RM) $(LIBTARGETS) $(LIBEXTRACLEAN)
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# old versions
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$(RM) $(LIB_DIR)/$(LIBSHBASENAME).*
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clean :: clean-lib
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