[sr-dev] git:master: make: on-the-fly dependency generation

Module: sip-router Branch: master Commit: 5a9014ee4977c6afbc4b0cf65a9fad6237c2e2a6 URL: http://git.sip-router.org/cgi-bin/gitweb.cgi/sip-router/?a=commit;h=5a9014e… Author: Andrei Pelinescu-Onciul &lt;andrei(a)iptel.org&gt; Committer: Andrei Pelinescu-Onciul &lt;andrei(a)iptel.org&gt; Date: Wed Mar 10 09:25:13 2010 +0100 make: on-the-fly dependency generation - support on-the-fly dependency file generation with gcc >=3.0 (the dependency files are generated while compiling the object file, eliminating another gcc+sed invocation) - support for using makedepend -f- for generating dependencies E.g.: make cfg MKDEP="makedepend -f-". In general gcc should be preferred if available (use this if you don't have gcc and your compiler doesn't generate good deps). --- Makefile.defs | 12 ++++++++++-- Makefile.rules | 22 +++++++++++++++++++--- 2 files changed, 29 insertions(+), 5 deletions(-) diff --git a/Makefile.defs b/Makefile.defs index d334f24..a775bd9 100644 --- a/Makefile.defs +++ b/Makefile.defs @@ -74,6 +74,9 @@ # from the host (andrei) # 2009-10-01 use -fsigned-char for gcc on ppc, ppc64, arm and arm6 # (on those archs char is unsigned by default) (andrei) +# 2010-03-10 added CC_MKDEP_OPTS, which contains to the list of options +# needed to generate dependencies on-the-fly while compiling +# or is empty if the compiler doesn't support it (andrei) quiet?=$(if $(filter 1 yes on,$(Q)),silent,verbose) @@ -351,7 +354,7 @@ ifneq (,$(findstring gcc, $(CC_LONGVER))) # -e 's/^[^0-9].*\([0-9][0-9]*\.[0-9][0-9]*\).*/\1/') # sed with POSIX.1 regex doesn't support |, + or ? # (darwin, solaris ...) => this complicated expression - MKDEP=$(CC) -MM + MKDEP=$(CC) -MM -MG #transform gcc version into 2.9x or 3.0 CC_SHORTVER:=$(shell echo "$(CC_VER)" | cut -d" " -f 2| \ sed -e 's/[^0-9]*-\(.*\)/\1/'| \ @@ -360,7 +363,11 @@ ifneq (,$(findstring gcc, $(CC_LONGVER))) 's/3\.[4-9]/3.4/' -e 's/4\.[0-1]\..*/4.x/' -e \ 's/4\.[0-1]/4.x/' -e 's/4\.[2-9]\..*/4.2+/' -e \ 's/4\.[2-9]$$/4.2+/') -endif +ifeq (,$(strip $(filter-out 3.0 3.4 4.x 4.2+,$(CC_SHORTVER)))) + # dependencies can be generated on-the-fly while compiling *.c + CC_MKDEP_OPTS=-MMD -MP +endif # 3.0 <= $(CC_SHORTVER) <= 4.x +endif # gcc ifneq (, $(findstring Sun, $(CC_LONGVER))) CC_NAME=suncc @@ -1947,6 +1954,7 @@ export exported_vars saved_fixed_vars:= MAIN_NAME CFG_NAME SCR_NAME FLAVOUR INSTALL_FLAVOUR \ SRC_NAME RELEASE OS ARCH \ C_DEFS DEFS_RM PROFILE CC LD MKDEP MKTAGS LDFLAGS C_INCLUDES \ + CC_MKDEP_OPTS \ MOD_LDFLAGS LIB_LDFLAGS UTILS_LDFLAGS LIB_SONAME LD_RPATH \ LIB_SUFFIX LIB_PREFIX \ LIBS \ diff --git a/Makefile.rules b/Makefile.rules index 9fbf02b..f816f8b 100644 --- a/Makefile.rules +++ b/Makefile.rules @@ -25,6 +25,11 @@ # used only for "temporary" defines/includes inside modules or # libs, C_DEFS and C_INCLUDES are used for the common stuff) # (andrei) +# 2010-03-09 generate dependencies when compiling .o instead of on +# include .d and fix build errors when a .h is moved +# support for using MKDEP="makedepend-f-" (andrei) +# 2010-03-10 support for on the-fly dependency generation (while compiling, +# see CC_MKDEP_OPTS) (andrei) # check if the saved cfg corresponds with the current one @@ -59,6 +64,19 @@ cmd_CC=$(CC) $(CFLAGS) $(C_INCLUDES) $(INCLUDES) $(C_DEFS) $(DEFS) -c $< -o $@ cmd_LD=$(LD) $(LDFLAGS) $(objs) $(extra_objs) $(ALL_LIBS) $(SER_RPATH) \ -o $(NAME) +ifeq (,$(CC_MKDEP_OPTS)) +# if CCC_MKDEP_OPTS is empty => CC cannot generate dependencies on the fly +cmd_MKDEP=$(MKDEP) $(filter -D% -I%,$(CFLAGS)) $(C_INCLUDES) $(INCLUDES) \ + $(C_DEFS) $(DEFS) $< \ + | sed -e 's/\#.*//' -e '/:[ ]*$$/d' -e '/^[ ]*$$/d' \ + -e 's|.*:|$@: $$(wildcard |' -e 's/\([^\\]\)$$/\1)/'> $*.d +else +# deps can be generated on the fly by cmd_CC +cmd_CC+=$(CC_MKDEP_OPTS) +# no MKDEP command any more +cmd_MKDEP= +endif # CC_MKDEP_OPTS + # what will be displayed if quiet==silent silent_cmd_CC=CC ($(CC)) [$(strip $(crt_type) $(NAME))] $@ silent_cmd_LD=LD ($(LD)) [$(strip $(crt_type) $(NAME))] $@ @@ -94,9 +112,7 @@ exec_cmd= $(if $($(quiet)_cmd_$(1)),\ #implicit rules %.o:%.c $(ALLDEP) $(call exec_cmd,CC) - @$(MKDEP) $(CFLAGS) $(C_INCLUDES) $(INCLUDES) $(C_DEFS) $(DEFS) $< \ - | sed -e 's/#.*//' -e '/:[ ]*$$/d' -e '/^[ ]*$$/d' \ - -e 's#.*:#$@: $$(wildcard #g' -e 's/\([^\\]\)$$/\1)/'> $*.d + @$(call cmd_MKDEP) # use RPATH and SER_LIBS if needed (make install and the module depends # on some ser libs)