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configure: Use /bin/dash as JAMSHELL if available.

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On platforms (such as Haiku) where dash is available or can be installed
but is not the default /bin/sh, this can provide a significant improvement
to compile times vs. /bin/bash or other more complex shells.

At least under Haiku, this is around a ~10% "real" time gain for builds.

This also allows one to specify a JAMSHELL by passing that environ
to ./configure.
This commit is contained in:
Augustin Cavalier 2020-05-29 23:10:28 -04:00
parent d309d94089
commit 7d72ed0184
1 changed files with 16 additions and 1 deletions
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17
configure vendored
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@ -541,7 +541,7 @@ configurePath=$0
configureEnvirons=
for var in `env`; do
case "$var" in
CC\=*|HAIKU*\=*)
CC\=*|HAIKU*\=*|JAMSHELL\=*)
configureEnvirons="$configureEnvirons $var"
;;
esac
@ -824,6 +824,19 @@ if [ $HOST_PLATFORM = "darwin" ]; then
HOST_EXTENDED_REGEX_SED="sed -E"
fi
# pick a JAMSHELL
if [ "$JAMSHELL" = "" ]; then
if check_file_exists /bin/dash; then
JAMSHELL=/bin/dash
else
JAMSHELL=/bin/sh
fi
fi
if ! $JAMSHELL -c true; then
echo "$JAMSHELL does not work! Please specify a working JAMSHELL."
exit 1
fi
# locate python
if python3 --version < /dev/null > /dev/null 2>&1; then
HOST_PYTHON="python3"
@ -1068,6 +1081,8 @@ HAIKU_HOST_USE_XATTR ?= "${HAIKU_HOST_USE_XATTR}" ;
HAIKU_HOST_USE_XATTR_REF ?= "${HAIKU_HOST_USE_XATTR_REF}" ;
HAIKU_HOST_BUILD_ONLY ?= "${HAIKU_HOST_BUILD_ONLY}" ;
JAMSHELL ?= ${JAMSHELL} -c ;
HOST_CC ?= ${CC} ;
HOST_GCC_RAW_VERSION ?= ${HOST_GCC_RAW_VERSION} ;
HOST_GCC_MACHINE ?= ${HOST_GCC_MACHINE} ;