2d290c0898
The 'log2()' and 'log2f()' functions have been added in FreeBSD's libc version 9.0.0, but they are missing in version 8.2.0, which is used in Genode. This patch provides preliminary implementations of these functions until the Genode libc gets updated to version 9.0.0 or above. Fixes #143.
86 lines
2.2 KiB
Makefile
86 lines
2.2 KiB
Makefile
LIBC_DIR = $(REP_DIR)/contrib/libc-8.2.0
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LIBM_DIR = $(LIBC_DIR)/msun
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LIBS = libc
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#
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# finding 'math_private.h'
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#
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INC_DIR += $(LIBM_DIR)/src
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#
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# finding 'invtrig.h', included by 'e_acosl.c'
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#
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INC_DIR += $(LIBM_DIR)/ld80
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#
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# finding 'fpmath.h', included by 'invtrig.h'
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#
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INC_DIR += $(LIBC_DIR)/libc/include
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FILTER_OUT += s_exp2l.c
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#
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# Files that are included by other sources (e.g., 's_sin.c'). Hence, we need
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# to remove them from the build. Otherwise, we would end up with doubly
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# defined symbols (and compiler warnings since those files are apparently
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# not meant to be compiled individually).
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#
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FILTER_OUT += e_rem_pio2.c e_rem_pio2f.c
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#
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# Disable warnings for selected files, i.e., to suppress
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# 'is static but used in inline function which is not static'
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# messages
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#
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CC_OPT_s_tanf = -w
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CC_OPT_s_tan = -w
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CC_OPT_s_sin = -w
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CC_OPT_s_cos = -w
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CC_OPT_s_cosf = -w
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CC_OPT_s_sinf = -w
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CC_OPT_k_cosf = -w
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CC_OPT_k_sinf = -w
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CC_OPT_k_tanf = -w
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#
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# Work-around to get over doubly defined symbols produced by several sources
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# that include 'e_rem_pio2.c' and 'e_rem_pio2f.c'. To avoid symbol clashes,
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# we rename each occurrence by adding the basename of the compilation unit
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# as suffix.
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#
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CC_OPT_s_sin += -D__ieee754_rem_pio2=__ieee754_rem_pio2_s_sin
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CC_OPT_s_cos += -D__ieee754_rem_pio2=__ieee754_rem_pio2_s_cos
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CC_OPT_s_sinf += -D__ieee754_rem_pio2f=__ieee754_rem_pio2f_s_sinf
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CC_OPT_s_sinf += -D__kernel_cosdf=__kernel_cosdf_sinf
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CC_OPT_s_cosf += -D__ieee754_rem_pio2f=__ieee754_rem_pio2f_s_cosf
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CC_OPT_s_cosf += -D__kernel_sindf=__kernel_sindf_cosf
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CC_OPT_s_tanf += -D__ieee754_rem_pio2f=__ieee754_rem_pio2f_s_tanf
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#
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# Use default warning level rather than -Wall because we do not want to touch
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# the imported source code to improve build aesthetics.
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#
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CC_WARN =
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SRC_C = $(wildcard $(LIBM_DIR)/src/*.c) \
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$(wildcard $(LIBM_DIR)/ld80/*.c) \
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$(wildcard $(LIBM_DIR)/bsdsrc/*.c)
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SRC_C := $(filter-out $(FILTER_OUT),$(notdir $(SRC_C)))
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# remove on update to version 9
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SRC_C += log2.c
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#
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# 'e_rem_pio2.c' uses '__inline'
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#
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CC_OPT += -D__inline=inline
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vpath %.c $(LIBM_DIR)/src
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vpath %.c $(LIBM_DIR)/ld80
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vpath %.c $(LIBM_DIR)/bsdsrc
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# remove on update to version 9
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vpath log2.c $(REP_DIR)/src/lib/libc
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SHARED_LIB = yes
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