make/bootstrap.conf
Paul Smith 60905a8afb [SV 56834] Support local PATH search with posix_spawnp
When using exec we install the child's environment before invoking
execlp(), so commands are found on the child's PATH.  posix_spawnp
searches on the parent's PATH, which we don't want.

Import gnulib's findprog-in module and use it to search the child's
PATH, then use posix_spawn() to run it.

Also, posix_spawn() does not fall back to trying sh on ENOEXEC, as
execlp() does, so implement that as well.

* bootstrap.conf: Add the findprog-in gnulib module
* src/job.c: Include findprog.h if we're using posix_spawn.
(start_job_command): Remove the handling of child->cmd_name,
(child_execute_job): and add it here.  Look up the command to be
run in the child's path and invoke it if found.  If it fails with
ENOEXEC then retry it as an argument to the default shell.
* tests/scripts/misc/general4: Test makefile PATH assignments.
* tests/scripts/features/targetvars: Ditto, for target variables.
2019-09-08 15:12:40 -04:00

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# Bootstrap configuration. -*-shell-script-*-
# Copyright (C) 2018-2019 Free Software Foundation, Inc.
# GNU Make is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free
# Software Foundation; either version 3 of the License, or (at your option)
# any later version.
# GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <https://www.gnu.org/licenses/>.
# Allow bootstrap to know that this is not a package
checkout_only_file=README.git
# Additional xgettext options to use. Use "\\\newline" to break lines.
# Ensure that all our magical output macros are correctly marked as
# C (printf) format strings.
XGETTEXT_OPTIONS='\\\
--from-code=UTF-8\\\
--flag=_:1:pass-c-format\\\
--flag=N_:1:pass-c-format\\\
--flag=DB:2:c-format --flag=DBF:2:c-format --flag=DBS:2:c-format\\\
--flag=O:3:c-format --flag=OSN:3:c-format --flag=ONS:3:c-format\\\
--flag=OS:3:c-format --flag=OSS:3:c-format --flag=OSSS:3:c-format\\\
--flag=ON:3:c-format --flag=ONN:3:c-format\\\
'
# We manage our own .gitignore files
vc_ignore=
# Build prerequisites
buildreq="\
autoconf 2.69
automake 1.16.1
"
gnulib_name=libgnu
gnulib_files=doc/make-stds.texi
gnulib_modules="\
alloca
fdl
findprog-in
getloadavg
host-cpu-c-abi
strerror
make-glob"