logging: new makefile target to generate loglevels at compile time

Using shell commands, a bitmask is generated for each file. Additionally,
a C header containing an array of loglevels and their files is created in
include/loglevels.h.

diff --git a/Makefile b/Makefile
index 84f54cba0c1a33ce34254f9a4216179e612a3624..bfaff1ce6c8f09d62cea1f4f2fab1b441daa5b69 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -6,14 +6,14 @@ include $(TOPDIR)/common.mk
 AUTOGENERATED:=src/cfgparse.tab.c src/cfgparse.yy.c
 FILES:=$(filter-out $(AUTOGENERATED),$(wildcard src/*.c))
 FILES:=$(FILES:.c=.o)
-HEADERS=$(wildcard include/*.h)
+HEADERS:=$(filter-out include/loglevels.h,$(wildcard include/*.h))
 
 # Depend on the specific file (.c for each .o) and on all headers
 src/%.o: src/%.c ${HEADERS}
        echo "CC $<"
-       $(CC) $(CFLAGS) -c -o $@ $<
+       $(CC) $(CFLAGS) -DLOGLEVEL="(1 << $(shell awk '/$(shell basename $< .c)/ { print NR }' loglevels.tmp))" -c -o $@ $<
 
-all: src/cfgparse.y.o src/cfgparse.yy.o ${FILES}
+all: loglevels.h src/cfgparse.y.o src/cfgparse.yy.o ${FILES}
        echo "LINK i3"
        $(CC) -o i3 ${FILES} src/cfgparse.y.o src/cfgparse.yy.o $(LDFLAGS)
        echo ""
@@ -22,15 +22,30 @@ all: src/cfgparse.y.o src/cfgparse.yy.o ${FILES}
        echo "SUBDIR i3-input"
        $(MAKE) TOPDIR=$(TOPDIR) -C i3-input
 
+rm_loglevels:
+       rm -f loglevels.h
+
+loglevels.h: rm_loglevels
+       echo "LOGLEVELS"
+       for file in $$(ls src/*.c src/*.y src/*.l | grep -v 'cfgparse.\(tab\|yy\).c'); \
+       do \
+               echo $$(basename $$file .c); \
+       done > loglevels.tmp
+       (echo "char *loglevels[] = {"; for file in $$(cat loglevels.tmp); \
+       do \
+               echo -e "\t\"$$file\", "; \
+       done; \
+       echo "};") > include/loglevels.h
+
 src/cfgparse.yy.o: src/cfgparse.l
        echo "LEX $<"
        flex -i -o$(@:.o=.c) $<
-       $(CC) $(CFLAGS) -c -o $@ $(@:.o=.c)
+       $(CC) $(CFLAGS) -DLOGLEVEL="(1 << $(shell awk '/cfgparse.l/ { print NR }' loglevels.tmp))" -c -o $@ $(@:.o=.c)
 
 src/cfgparse.y.o: src/cfgparse.y
        echo "YACC $<"
        bison --debug --verbose -b $(basename $< .y) -d $<
-       $(CC) $(CFLAGS) -c -o $@ $(<:.y=.tab.c)
+       $(CC) $(CFLAGS) -DLOGLEVEL="(1 << $(shell awk '/cfgparse.y/ { print NR }' loglevels.tmp))" -c -o $@ $(<:.y=.tab.c)
 
 install: all
        echo "INSTALL"

diff --git a/common.mk b/common.mk
index 70305148a4a4b7047941173c4020f64ad9f3cdd0..856f9a7b22fe551fb9f97dffb80f7e793acaad44 100644 (file)
--- a/common.mk
+++ b/common.mk
@@ -74,5 +74,5 @@ endif
 .SILENT:
 
 # Always remake the following targets
-.PHONY: install clean dist distclean
+.PHONY: install clean dist distclean rm_loglevels