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Added COMMON_ADD Makefile facility

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Added the makefile variable ${COMMON_ADD} that will add flags
to all compile and link commands. The ${COMMON_ADD} flags are
appended to both ${COMMON_CFLAGS} and ${COMMON_LDFLAGS}.  This
facility is available to nearly all platforms except those with
very old make comamnds that do not understand the += operator.

Example on masOS (Darwin), one may invoke clang's -fsanitize
facility by:

    make clobber all COMMON_ADD='-fsanitize=undefined -fsanitize=address'

Another example.  To force C warnings to be treated as errors:

    make COMMON_ADD='-Werror'
This commit is contained in:
Landon Curt Noll
2017-05-23 02:08:33 -07:00
parent 44ffb0eec9
commit 188fd372ea
3 changed files with 256 additions and 2 deletions
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127
Makefile.ship
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@@ -1157,6 +1157,23 @@ LD_STATIC=
LIBCALC_STATIC=
LIBCUSTCALC_STATIC=
#
# If you want to add flags to all compiler and linker
# run (via ${COMMON_CFLAGS} and ${COMMON_LDFLAGS}),
# set ${COMMON_ADD}.
#
# For example to use gcc's -Werror to force warnings
# to become errors, call make with:
#
# make .. COMMON_ADD='-Werror'
#
# This facility requires a Gnu Makefile, or a make command
# that understands the += make operand.
#
#if 0 /* start of skip for non-Gnu makefiles */
COMMON_CFLAGS+= ${COMMON_ADD}
COMMON_LDFLAGS+= ${COMMON_ADD}
#endif /* end of skip for non-Gnu makefiles */
#
CCWARN= -Wall
WNO_IMPLICT= -Wno-implicit
WNO_ERROR_LONG_LONG= -Wno-error=long-long
@@ -1207,6 +1224,24 @@ LD_STATIC= ${DARWIN_ARCH}
LIBCALC_STATIC=
LIBCUSTCALC_STATIC=
#
# If you want to add flags to all compiler and linker
# run (via ${COMMON_CFLAGS} and ${COMMON_LDFLAGS}),
# set ${COMMON_ADD}.
#
# For example to use clang's -fsanitize for calc testing,
# which requires a common set of flags to be passed to
# every compile and link, then call make with:
#
# make .. COMMON_ADD='-fsanitize=undefined -fsanitize=address'
#
# This facility requires a Gnu Makefile, or a make command
# that understands the += make operand.
#
#if 0 /* start of skip for non-Gnu makefiles */
COMMON_CFLAGS+= ${COMMON_ADD}
COMMON_LDFLAGS+= ${COMMON_ADD}
#endif /* end of skip for non-Gnu makefiles */
#
CCWARN= -Wall
WNO_IMPLICT= -Wno-implicit
WNO_ERROR_LONG_LONG= -Wno-error=long-long
@@ -1270,6 +1305,23 @@ LD_STATIC=
LIBCALC_STATIC=
LIBCUSTCALC_STATIC=
#
# If you want to add flags to all compiler and linker
# run (via ${COMMON_CFLAGS} and ${COMMON_LDFLAGS}),
# set ${COMMON_ADD}.
#
# For example to use gcc's -Werror to force warnings
# to become errors, call make with:
#
# make .. COMMON_ADD='-Werror'
#
# This facility requires a Gnu Makefile, or a make command
# that understands the += make operand.
#
#if 0 /* start of skip for non-Gnu makefiles */
COMMON_CFLAGS+= ${COMMON_ADD}
COMMON_LDFLAGS+= ${COMMON_ADD}
#endif /* end of skip for non-Gnu makefiles */
#
CCWARN= -Wall
WNO_IMPLICT= -Wno-implicit
WNO_ERROR_LONG_LONG= -Wno-error=long-long
@@ -1315,6 +1367,23 @@ LD_STATIC=
LIBCALC_STATIC=
LIBCUSTCALC_STATIC=
#
# If you want to add flags to all compiler and linker
# run (via ${COMMON_CFLAGS} and ${COMMON_LDFLAGS}),
# set ${COMMON_ADD}.
#
# For example to use gcc's -Werror to force warnings
# to become errors, call make with:
#
# make .. COMMON_ADD='-Werror'
#
# This facility requires a Gnu Makefile, or a make command
# that understands the += make operand.
#
#if 0 /* start of skip for non-Gnu makefiles */
COMMON_CFLAGS+= ${COMMON_ADD}
COMMON_LDFLAGS+= ${COMMON_ADD}
#endif /* end of skip for non-Gnu makefiles */
#
CCWARN= -Wall
WNO_IMPLICT= -Wno-implicit
WNO_ERROR_LONG_LONG= -Wno-error=long-long
@@ -1354,6 +1423,23 @@ LIBCALC_STATIC=
LIBCUSTCALC_STATIC=
LD_STATIC=
#
# If you want to add flags to all compiler and linker
# run (via ${COMMON_CFLAGS} and ${COMMON_LDFLAGS}),
# set ${COMMON_ADD}.
#
# For example to use gcc's -Werror to force warnings
# to become errors, call make with:
#
# make .. COMMON_ADD='-Werror'
#
# This facility requires a Gnu Makefile, or a make command
# that understands the += make operand.
#
#if 0 /* start of skip for non-Gnu makefiles */
COMMON_CFLAGS+= ${COMMON_ADD}
COMMON_LDFLAGS+= ${COMMON_ADD}
#endif /* end of skip for non-Gnu makefiles */
#
CCWARN= -Wall
WNO_IMPLICT= -Wno-implicit
WNO_ERROR_LONG_LONG= -Wno-error=long-long
@@ -1391,6 +1477,23 @@ LIBCALC_STATIC=
LIBCUSTCALC_STATIC=
LD_STATIC=
#
# If you want to add flags to all compiler and linker
# run (via ${COMMON_CFLAGS} and ${COMMON_LDFLAGS}),
# set ${COMMON_ADD}.
#
# For example to use gcc's -Werror to force warnings
# to become errors, call make with:
#
# make .. COMMON_ADD='-Werror'
#
# This facility requires a Gnu Makefile, or a make command
# that understands the += make operand.
#
#if 0 /* start of skip for non-Gnu makefiles */
COMMON_CFLAGS+= ${COMMON_ADD}
COMMON_LDFLAGS+= ${COMMON_ADD}
#endif /* end of skip for non-Gnu makefiles */
#
CCWARN= -Wall
WNO_IMPLICT= -Wno-implicit
WNO_ERROR_LONG_LONG= -Wno-error=long-long
@@ -1531,6 +1634,23 @@ LIBCALC_STATIC=
LIBCUSTCALC_STATIC=
LD_STATIC=
#
# If you want to add flags to all compiler and linker
# run (via ${COMMON_CFLAGS} and ${COMMON_LDFLAGS}),
# set ${COMMON_ADD}.
#
# For example to use gcc's -Werror to force warnings
# to become errors, call make with:
#
# make .. COMMON_ADD='-Werror'
#
# This facility requires a Gnu Makefile, or a make command
# that understands the += make operand.
#
#if 0 /* start of skip for non-Gnu makefiles */
COMMON_CFLAGS+= ${COMMON_ADD}
COMMON_LDFLAGS+= ${COMMON_ADD}
#endif /* end of skip for non-Gnu makefiles */
#
CCWARN= -Wall
WNO_IMPLICT= -Wno-implicit
WNO_ERROR_LONG_LONG= -Wno-error=long-long
@@ -1742,6 +1862,7 @@ CUSTOM_PASSDOWN= \
CHMOD=${CHMOD} \
CMP=${CMP} \
CO=${CO} \
COMMON_ADD="${COMMON_ADD}" \
COMMON_CFLAGS="${COMMON_CFLAGS} -I.." \
COMMON_LDFLAGS="${COMMON_LDFLAGS}" \
CP=${CP} \
@@ -1796,6 +1917,7 @@ HELP_PASSDOWN= \
CHMOD=${CHMOD} \
CMP=${CMP} \
CO=${CO} \
COMMON_ADD="${COMMON_ADD}" \
COMMON_CFLAGS="${COMMON_CFLAGS}" \
COMMON_LDFLAGS="${COMMON_LDFLAGS}" \
CP=${CP} \
@@ -2168,11 +2290,11 @@ calc.usage: calc.1 ${MAKE_FILE}
sample: ${SAMPLE_TARGETS}
sample_rand${EXT}: sample_rand.o ${CALC_DYNAMIC_LIBS} ${MAKE_FILE}
${CC} sample_rand.o ${CLDFALGS} ${LD_SHARE} ${CALC_DYNAMIC_LIBS} \
${CC} sample_rand.o ${LDFLAGS} ${LD_SHARE} ${CALC_DYNAMIC_LIBS} \
${READLINE_LIB} ${READLINE_EXTRAS} -o $@
sample_many${EXT}: sample_many.o ${CALC_DYNAMIC_LIBS} ${MAKE_FILE}
${CC} sample_many.o ${CLDFALGS} ${LD_SHARE} ${CALC_DYNAMIC_LIBS} \
${CC} sample_many.o ${LDFLAGS} ${LD_SHARE} ${CALC_DYNAMIC_LIBS} \
${READLINE_LIB} ${READLINE_EXTRAS} -o $@
###
@@ -3937,6 +4059,7 @@ env:
@echo 'CMP=${CMP}'; echo ''
@echo 'CO=${CO}'; echo ''
@echo 'COL=${COL}'; echo ''
@echo 'COMMON_ADD=${COMMON_ADD}'; echo ''
@echo 'COMMON_CFLAGS=${COMMON_CFLAGS}'; echo ''
@echo 'COMMON_LDFLAGS=${COMMON_LDFLAGS}'; echo ''
@echo 'CP=${CP}'; echo ''