PATH=$(PATH) in tests/Makefile causes problem in typical WSL environment #1195
Description
Describe the bug
make test doesn't work in typical WSL environment.
Expected behavior
make test works.
To Reproduce
As of today (Nov 28, 2022), we can reproduce this issue with the following commands in WSL environment.
$ cd
$ git clone https://github.com/lz4/lz4.git lz4-issue-path
$ cd lz4-issue-path/
$ git log -1
commit 8a31e6402df11c1bf8fbb1db3b29ec2c76fe6f26 (HEAD -> dev, origin/dev, origin/HEAD)
...
Date: Wed Nov 23 16:15:10 2022 -0800
...
$ make test
make[1]: Entering directory '/home/wsluser/lz4-issue-path/tests'
make -C ../programs lz4 CFLAGS="-O3 -Wall -Wextra -Wundef -Wcast-qual -Wcast-align -Wshadow -Wswitch-enum -Wdeclaration-after-statement -Wstrict-prototypes -Wpointer-arith -Wstrict-aliasing=1 -g -DLZ4_DEBUG=1 "
make[2]: Entering directory '/home/wsluser/lz4-issue-path/programs'
make[2]: Leaving directory '/home/wsluser/lz4-issue-path/programs'
cc -O3 -Wall -Wextra -Wundef -Wcast-qual -Wcast-align -Wshadow -Wswitch-enum -Wdeclaration-after-statement -Wstrict-prototypes -Wpointer-arith -Wstrict-aliasing=1 -g -DLZ4_DEBUG=1 -I../lib -I../programs -DXXH_NAMESPACE=LZ4_ -I../programs ../programs/datagen.c datagencli.c -o datagen
ln -sf ../programs/lz4 ../programs/unlz4
ln -sf ../programs/lz4 ../programs/lz4cat
---- test lz4 basic compression/decompression ----
PATH=../programs:...:/mnt/c/Program Files (x86)/NVIDIA Corporation/PhysX/Common:...
/bin/sh: 1: Syntax error: "(" unexpected
make[1]: *** [Makefile:241: test-lz4-basic] Error 2System (please complete the following information):
- OS: Windows 11, WSL2
- Version 21H2 (22000.1219)
- Compiler gcc (gcc (Ubuntu 11.3.0-1ubuntu1~22.04) 11.3.0)
- Build System Makefile with
make(GNU Make 4.3)
I think this error is caused by (space, 0x20) or ( (parentheses, 0x28), in $(PATH).
PATH=$(PATH) ./test-x.sh
is expanded as
PATH=path1:path2:/mnt/c/Program Files (x86)/path3 ./test-x.sh
and it seems first (space) is treated as a command separator.