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c00c085bfb
-Wformat-truncation looks for places where the return code of snprintf() is unchecked and the provided buffer might be too short. This is based on a heuristic that can change between compiler versions. It has been seen to get this wrong in ddt_object_name(), leading to DDT_NAMELEN being increased somewhat arbitrarily. There's no good reason to have this warning enabled, so here we disable it everywhere. Truncation may be undesirable, but snprintf() is guaranteed to emit a trailing null, so at worst we get a short string, not a buffer overrun. Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rob Norris <robn@despairlabs.com> Sponsored-by: https://despairlabs.com/sponsor/ Closes #15908
74 lines
2.3 KiB
Plaintext
74 lines
2.3 KiB
Plaintext
#
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# Default build rules for all user space components, every Makefile.am
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# should include these rules and override or extend them as needed.
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#
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PHONY =
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AM_CPPFLAGS = \
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-include $(top_builddir)/zfs_config.h \
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-I$(top_builddir)/include \
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-I$(top_srcdir)/include \
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-I$(top_srcdir)/module/icp/include \
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-I$(top_srcdir)/lib/libspl/include \
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-I$(top_srcdir)/lib/libspl/include/os/@ac_system_l@
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AM_LIBTOOLFLAGS = --silent
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AM_CFLAGS = -std=gnu99 -Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes -Wwrite-strings -Wno-sign-compare -Wno-missing-field-initializers
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AM_CFLAGS += -fno-strict-aliasing
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AM_CFLAGS += $(NO_OMIT_FRAME_POINTER)
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AM_CFLAGS += $(IMPLICIT_FALLTHROUGH)
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AM_CFLAGS += $(DEBUG_CFLAGS)
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AM_CFLAGS += $(ASAN_CFLAGS)
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AM_CFLAGS += $(UBSAN_CFLAGS)
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AM_CFLAGS += $(CODE_COVERAGE_CFLAGS)
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AM_CFLAGS += $(NO_FORMAT_ZERO_LENGTH)
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AM_CFLAGS += $(NO_FORMAT_TRUNCATION)
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if BUILD_FREEBSD
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AM_CFLAGS += -fPIC -Werror -Wno-unknown-pragmas -Wno-enum-conversion
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AM_CFLAGS += -include $(top_srcdir)/include/os/freebsd/spl/sys/ccompile.h
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AM_CFLAGS += -I/usr/include -I/usr/local/include
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endif
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AM_CPPFLAGS += -D_GNU_SOURCE
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AM_CPPFLAGS += -D_REENTRANT
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AM_CPPFLAGS += -D_FILE_OFFSET_BITS=64
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AM_CPPFLAGS += -D_LARGEFILE64_SOURCE
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AM_CPPFLAGS += -DLIBEXECDIR=\"$(libexecdir)\"
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AM_CPPFLAGS += -DZFSEXECDIR=\"$(zfsexecdir)\"
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AM_CPPFLAGS += -DRUNSTATEDIR=\"$(runstatedir)\"
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AM_CPPFLAGS += -DSBINDIR=\"$(sbindir)\"
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AM_CPPFLAGS += -DSYSCONFDIR=\"$(sysconfdir)\"
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AM_CPPFLAGS += -DPKGDATADIR=\"$(pkgdatadir)\"
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AM_CPPFLAGS += $(DEBUG_CPPFLAGS)
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AM_CPPFLAGS += $(CODE_COVERAGE_CPPFLAGS)
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AM_CPPFLAGS += -DTEXT_DOMAIN=\"zfs-@ac_system_l@-user\"
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if ASAN_ENABLED
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AM_CPPFLAGS += -DZFS_ASAN_ENABLED
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endif
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if UBSAN_ENABLED
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AM_CPPFLAGS += -DZFS_UBSAN_ENABLED
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endif
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AM_LDFLAGS = $(DEBUG_LDFLAGS)
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AM_LDFLAGS += $(ASAN_LDFLAGS)
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AM_LDFLAGS += $(UBSAN_LDFLAGS)
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if BUILD_FREEBSD
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AM_LDFLAGS += -fstack-protector-strong -shared
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AM_LDFLAGS += -Wl,-x -Wl,--fatal-warnings -Wl,--warn-shared-textrel
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AM_LDFLAGS += -lm
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endif
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# If a target includes kernel code, generate warnings for large stack frames
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KERNEL_CFLAGS = $(FRAME_LARGER_THAN)
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# See https://debbugs.gnu.org/cgi/bugreport.cgi?bug=54020
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LIBRARY_CFLAGS = -no-suppress
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# Forcibly enable asserts/debugging for libzpool &al.
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FORCEDEBUG_CPPFLAGS = -DDEBUG -UNDEBUG -DZFS_DEBUG
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