The unpac monorepo manager self-hosting as a monorepo using unpac
Use /dev/null instead of /dev/zero testing diff
GNU diffutils identifies /dev/zero as identical to /dev/zero by
special-casing, but Apple's diff, for example, does not. Use
/dev/null instead.
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Changes
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Changes
···
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### Build system:
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-
- #13705: Cache test results of custom Autoconf tests from aclocal.m4.
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+
- #13705, #14444: Cache test results of custom Autoconf tests from aclocal.m4.
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(Antonin Décimo, review by David Allsopp and Miod Vallat)
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- #13810: Support build of cross compilers to native freestanding targets
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configure
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configure
···
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else $as_nop
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flags=""
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for flag in ${flags_to_test}; do
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-
"$DIFF" $flag /dev/zero /dev/zero >/dev/null 2>&1 && \
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+
"$DIFF" $flag /dev/null /dev/null >/dev/null 2>&1 && \
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flags="${flags:+$flags }$flag"
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done
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ocaml_cv_prog_diff_flags="$flags"
···
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then :
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printf %s "(cached) " >&6
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else $as_nop
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-
if $DIFF --color=auto $0 $0 > /dev/null 2>&1
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+
if $DIFF --color=auto /dev/null /dev/null > /dev/null 2>&1
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then :
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ocaml_cv_prog_diff_supports_color=true
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fi
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configure.ac
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configure.ac
···
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[ocaml_cv_prog_diff_flags],
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[flags=""
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for flag in ${flags_to_test}; do
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-
"$DIFF" $flag /dev/zero /dev/zero >/dev/null 2>&1 && \
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+
"$DIFF" $flag /dev/null /dev/null >/dev/null 2>&1 && \
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flags="${flags:+$flags }$flag"
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done
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ocaml_cv_prog_diff_flags="$flags"])
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AC_CACHE_CHECK([whether $DIFF supports --color={auto,always,never}],
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[ocaml_cv_prog_diff_supports_color],
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-
[AS_IF([$DIFF --color=auto $0 $0 > /dev/null 2>&1],
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+
[AS_IF([$DIFF --color=auto /dev/null /dev/null > /dev/null 2>&1],
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[ocaml_cv_prog_diff_supports_color=true])])])
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AC_SUBST([DIFF_FLAGS], [$ocaml_cv_prog_diff_flags])
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# Always assign a valid default OCaml value