Merge branch 'tr/coverage' into maint

The test coverage framework was left broken for some time.

* tr/coverage:
coverage: build coverage-untested-functions by default
coverage: set DEFAULT_TEST_TARGET to avoid using prove
coverage: do not delete .gcno files before building
coverage: split build target into compile and test

diff --combined Makefile
index 6b91612acb1edd825c2409be3f05533eb42139e6,6f9d1c7c0f0d0ce99742cf6a7ecd2b9dc929d430..14a38cc42216c5347287d4338a53092bcd8271c6
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -69,9 -69,6 +69,9 @@@ all:
  # Define NO_MSGFMT_EXTENDED_OPTIONS if your implementation of msgfmt
  # doesn't support GNU extensions like --check and --statistics
  #
 +# Define NEEDS_CLIPPED_WRITE if your write(2) cannot write more than
 +# INT_MAX bytes at once (e.g. MacOS X).
 +#
  # Define HAVE_PATHS_H if you have paths.h and want to use the default PATH
  # it specifies.
  #
@@@ -140,10 -137,6 +140,10 @@@
  # specify your own (or DarwinPort's) include directories and
  # library directories by defining CFLAGS and LDFLAGS appropriately.
  #
 +# Define NO_APPLE_COMMON_CRYPTO if you are building on Darwin/Mac OS X
 +# and do not want to use Apple's CommonCrypto library.  This allows you
 +# to provide your own OpenSSL library, for example from MacPorts.
 +#
  # Define BLK_SHA1 environment variable to make use of the bundled
  # optimized C SHA1 routine.
  #
@@@ -1061,11 -1054,6 +1061,11 @@@ ifeq ($(uname_S),Darwin
                        BASIC_LDFLAGS += -L/opt/local/lib
                endif
        endif
 +      ifndef NO_APPLE_COMMON_CRYPTO
 +              APPLE_COMMON_CRYPTO = YesPlease
 +              COMPAT_CFLAGS += -DAPPLE_COMMON_CRYPTO
 +      endif
 +      NO_REGEX = YesPlease
        PTHREAD_LIBS =
  endif
  
@@@ -1399,17 -1387,11 +1399,17 @@@ ifdef PPC_SHA
        SHA1_HEADER = "ppc/sha1.h"
        LIB_OBJS += ppc/sha1.o ppc/sha1ppc.o
        LIB_H += ppc/sha1.h
 +else
 +ifdef APPLE_COMMON_CRYPTO
 +      COMPAT_CFLAGS += -DCOMMON_DIGEST_FOR_OPENSSL
 +      SHA1_HEADER = <CommonCrypto/CommonDigest.h>
  else
        SHA1_HEADER = <openssl/sha.h>
        EXTLIBS += $(LIB_4_CRYPTO)
  endif
  endif
 +endif
 +
  ifdef NO_PERL_MAKEMAKER
        export NO_PERL_MAKEMAKER
  endif
@@@ -1484,11 -1466,6 +1484,11 @@@ ifndef NO_MSGFMT_EXTENDED_OPTION
        MSGFMT += --check --statistics
  endif
  
 +ifdef NEEDS_CLIPPED_WRITE
 +      BASIC_CFLAGS += -DNEEDS_CLIPPED_WRITE
 +      COMPAT_OBJS += compat/clipped-write.o
 +endif
 +
  ifneq (,$(XDL_FAST_HASH))
        BASIC_CFLAGS += -DXDL_FAST_HASH
  endif
@@@ -2285,6 -2262,9 +2285,6 @@@ check: common-cmds.
                exit 1; \
        fi
  
 -remove-dashes:
 -      ./fixup-builtins $(BUILT_INS) $(PROGRAMS) $(SCRIPTS)
 -
  ### Installation rules
  
  ifneq ($(filter /%,$(firstword $(template_dir))),)
@@@ -2463,7 -2443,7 +2463,7 @@@ profile-clean
        $(RM) $(addsuffix *.gcda,$(addprefix $(PROFILE_DIR)/, $(object_dirs)))
        $(RM) $(addsuffix *.gcno,$(addprefix $(PROFILE_DIR)/, $(object_dirs)))
  
- clean: profile-clean
+ clean: profile-clean coverage-clean
        $(RM) *.o block-sha1/*.o ppc/*.o compat/*.o compat/*/*.o xdiff/*.o vcs-svn/*.o \
                builtin/*.o $(LIB_FILE) $(XDIFF_LIB) $(VCSSVN_LIB)
        $(RM) $(ALL_PROGRAMS) $(SCRIPT_LIB) $(BUILT_INS) git$X
@@@ -2544,29 -2524,34 +2544,34 @@@ check-builtins:
  
  ### Test suite coverage testing
  #
- .PHONY: coverage coverage-clean coverage-build coverage-report
+ .PHONY: coverage coverage-clean coverage-compile coverage-test coverage-report
+ .PHONY: coverage-clean-results
  
  coverage:
-       $(MAKE) coverage-build
-       $(MAKE) coverage-report
+       $(MAKE) coverage-test
+       $(MAKE) coverage-untested-functions
  
  object_dirs := $(sort $(dir $(OBJECTS)))
- coverage-clean:
+ coverage-clean-results:
        $(RM) $(addsuffix *.gcov,$(object_dirs))
        $(RM) $(addsuffix *.gcda,$(object_dirs))
-       $(RM) $(addsuffix *.gcno,$(object_dirs))
        $(RM) coverage-untested-functions
        $(RM) -r cover_db/
        $(RM) -r cover_db_html/
  
+ coverage-clean: coverage-clean-results
+       $(RM) $(addsuffix *.gcno,$(object_dirs))
+ 
  COVERAGE_CFLAGS = $(CFLAGS) -O0 -ftest-coverage -fprofile-arcs
  COVERAGE_LDFLAGS = $(CFLAGS)  -O0 -lgcov
  GCOVFLAGS = --preserve-paths --branch-probabilities --all-blocks
  
- coverage-build: coverage-clean
+ coverage-compile:
        $(MAKE) CFLAGS="$(COVERAGE_CFLAGS)" LDFLAGS="$(COVERAGE_LDFLAGS)" all
+ 
+ coverage-test: coverage-clean-results coverage-compile
        $(MAKE) CFLAGS="$(COVERAGE_CFLAGS)" LDFLAGS="$(COVERAGE_LDFLAGS)" \
-               -j1 test
+               DEFAULT_TEST_TARGET=test -j1 test
  
  coverage-report:
        $(QUIET_GCOV)for dir in $(object_dirs); do \