263 WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function -Wformat=2
264
265 ifeq ($(USE_CLANG),)
266 # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit
267 # conversions which might affect the values. Only enable it in earlier versions.
268 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
269 WARNINGS_FLAGS += -Wconversion
270 endif
271 endif
272
273 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)
274 # Special cases
275 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))
276 # XXXDARWIN: for _dyld_bind_fully_image_containing_address
277 ifeq ($(OS_VENDOR), Darwin)
278 CFLAGS_WARN/os_bsd.o = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations
279 endif
280
281 # optimization control flags (Used by fastdebug and release variants)
282 OPT_CFLAGS/NOOPT=-O0
283 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 8 \) \))" "1"
284 # Allow basic optimizations which don't distrupt debugging. (Principally dead code elimination)
285 OPT_CFLAGS/DEBUG=-Og
286 else
287 # Allow no optimizations.
288 OPT_CFLAGS/DEBUG=-O0
289 endif
290 OPT_CFLAGS/SIZE=-Os
291 OPT_CFLAGS/SPEED=-O3
292
293 ifeq ($(OS_VENDOR), Darwin)
294 # use -Os by default, unless -O3 can be proved to be worth the cost, as per policy
295 # <https://wiki.openjdk.java.net/display/MacOSXPort/Compiler+Errata>
296 OPT_CFLAGS_DEFAULT ?= SIZE
297 else
298 OPT_CFLAGS_DEFAULT ?= SPEED
299 endif
300
301 # Hotspot uses very unstrict aliasing turn this optimization off
302 # This option is added to CFLAGS rather than OPT_CFLAGS
303 # so that OPT_CFLAGS overrides get this option too.
426 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
427 SONAMEFLAG = -Xlinker -soname=SONAME
428
429 # Build shared library
430 SHARED_FLAG = -shared $(VM_PICFLAG)
431
432 # Keep symbols even they are not used
433 AOUT_FLAGS += -Xlinker -export-dynamic
434 endif
435
436 #------------------------------------------------------------------------
437 # Debug flags
438
439 ifeq ($(USE_CLANG), true)
440 # Restrict the debug information created by Clang to avoid
441 # too big object files and speed the build up a little bit
442 # (see http://llvm.org/bugs/show_bug.cgi?id=7554)
443 CFLAGS += -flimit-debug-info
444 endif
445
446 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 8 \) \))" "1"
447 # Allow basic optimizations which don't distrupt debugging. (Principally dead code elimination)
448 DEBUG_CFLAGS=-Og
449 else
450 # Allow no optimizations.
451 DEBUG_CFLAGS=-O0
452 endif
453
454 # DEBUG_BINARIES uses full -g debug information for all configs
455 ifeq ($(DEBUG_BINARIES), true)
456 CFLAGS += -g
457 else
458 # Use the stabs format for debugging information (this is the default
459 # on gcc-2.91). It's good enough, has all the information about line
460 # numbers and local variables, and libjvm.so is only about 16M.
461 # Change this back to "-g" if you want the most expressive format.
462 # (warning: that could easily inflate libjvm.so to 150M!)
463 # Note: The Itanium gcc compiler crashes when using -gstabs.
464 DEBUG_CFLAGS/ia64 = -g
465 DEBUG_CFLAGS/amd64 = -g
466 DEBUG_CFLAGS/arm = -g
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263 WARNING_FLAGS = -Wpointer-arith -Wsign-compare -Wundef -Wunused-function -Wformat=2
264
265 ifeq ($(USE_CLANG),)
266 # Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit
267 # conversions which might affect the values. Only enable it in earlier versions.
268 ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
269 WARNINGS_FLAGS += -Wconversion
270 endif
271 endif
272
273 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(WARNING_FLAGS)
274 # Special cases
275 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))
276 # XXXDARWIN: for _dyld_bind_fully_image_containing_address
277 ifeq ($(OS_VENDOR), Darwin)
278 CFLAGS_WARN/os_bsd.o = $(CFLAGS_WARN/DEFAULT) -Wno-deprecated-declarations
279 endif
280
281 # optimization control flags (Used by fastdebug and release variants)
282 OPT_CFLAGS/NOOPT=-O0
283 ifeq ($(USE_CLANG), true)
284 OPT_CFLAGS/DEBUG=-O0
285 else ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 8 \) \))" "1"
286 # Allow basic optimizations which don't distrupt debugging. (Principally dead code elimination)
287 OPT_CFLAGS/DEBUG=-Og
288 else
289 # Allow no optimizations.
290 OPT_CFLAGS/DEBUG=-O0
291 endif
292 OPT_CFLAGS/SIZE=-Os
293 OPT_CFLAGS/SPEED=-O3
294
295 ifeq ($(OS_VENDOR), Darwin)
296 # use -Os by default, unless -O3 can be proved to be worth the cost, as per policy
297 # <https://wiki.openjdk.java.net/display/MacOSXPort/Compiler+Errata>
298 OPT_CFLAGS_DEFAULT ?= SIZE
299 else
300 OPT_CFLAGS_DEFAULT ?= SPEED
301 endif
302
303 # Hotspot uses very unstrict aliasing turn this optimization off
304 # This option is added to CFLAGS rather than OPT_CFLAGS
305 # so that OPT_CFLAGS overrides get this option too.
428 # Use $(SONAMEFLAG:SONAME=soname) to specify the intrinsic name of a shared obj
429 SONAMEFLAG = -Xlinker -soname=SONAME
430
431 # Build shared library
432 SHARED_FLAG = -shared $(VM_PICFLAG)
433
434 # Keep symbols even they are not used
435 AOUT_FLAGS += -Xlinker -export-dynamic
436 endif
437
438 #------------------------------------------------------------------------
439 # Debug flags
440
441 ifeq ($(USE_CLANG), true)
442 # Restrict the debug information created by Clang to avoid
443 # too big object files and speed the build up a little bit
444 # (see http://llvm.org/bugs/show_bug.cgi?id=7554)
445 CFLAGS += -flimit-debug-info
446 endif
447
448 ifeq ($(USE_CLANG), true)
449 DEBUG_CFLAGS=-O0
450 else ifeq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 8 \) \))" "1"
451 # Allow basic optimizations which don't distrupt debugging. (Principally dead code elimination)
452 DEBUG_CFLAGS=-Og
453 else
454 # Allow no optimizations.
455 DEBUG_CFLAGS=-O0
456 endif
457
458 # DEBUG_BINARIES uses full -g debug information for all configs
459 ifeq ($(DEBUG_BINARIES), true)
460 CFLAGS += -g
461 else
462 # Use the stabs format for debugging information (this is the default
463 # on gcc-2.91). It's good enough, has all the information about line
464 # numbers and local variables, and libjvm.so is only about 16M.
465 # Change this back to "-g" if you want the most expressive format.
466 # (warning: that could easily inflate libjvm.so to 150M!)
467 # Note: The Itanium gcc compiler crashes when using -gstabs.
468 DEBUG_CFLAGS/ia64 = -g
469 DEBUG_CFLAGS/amd64 = -g
470 DEBUG_CFLAGS/arm = -g
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