bisect: introduce support for --no-checkout option.

diff --git a/Makefile b/Makefile
index 46793d1112405570a6453e9a1412206de42a5068..4ed7996f7bcc3a044b0da54e8319fc0339ff009d 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -153,6 +153,9 @@ all::
 # that tells runtime paths to dynamic libraries;
 # "-Wl,-rpath=/path/lib" is used instead.
 #
+# Define NO_NORETURN if using buggy versions of gcc 4.6+ and profile feedback,
+# as the compiler can crash (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49299)
+#
 # Define USE_NSEC below if you want git to care about sub-second file mtimes
 # and ctimes. Note that you need recent glibc (at least 2.2.4) for this, and
 # it will BREAK YOUR LOCAL DIFFS! show-diff and anything using it will likely
@@ -1378,6 +1381,9 @@ endif
 ifdef USE_ST_TIMESPEC
        BASIC_CFLAGS += -DUSE_ST_TIMESPEC
 endif
+ifdef NO_NORETURN
+       BASIC_CFLAGS += -DNO_NORETURN
+endif
 ifdef NO_NSEC
        BASIC_CFLAGS += -DNO_NSEC
 endif
@@ -2499,3 +2505,19 @@ cover_db: coverage-report
 
 cover_db_html: cover_db
        cover -report html -outputdir cover_db_html cover_db
+
+### profile feedback build
+#
+.PHONY: profile-all profile-clean
+
+PROFILE_GEN_CFLAGS := $(CFLAGS) -fprofile-generate -DNO_NORETURN=1
+PROFILE_USE_CFLAGS := $(CFLAGS) -fprofile-use -fprofile-correction -DNO_NORETURN=1
+
+profile-clean:
+       $(RM) $(addsuffix *.gcda,$(object_dirs))
+       $(RM) $(addsuffix *.gcno,$(object_dirs))
+
+profile-all: profile-clean
+       $(MAKE) CFLAGS="$(PROFILE_GEN_CFLAGS)" all
+       $(MAKE) CFLAGS="$(PROFILE_GEN_CFLAGS)" -j1 test
+       $(MAKE) CFLAGS="$(PROFILE_USE_CFLAGS)" all