pxz: execution of xz binary failed: No such file or directory

[USBhost]

PXZ cant seem to find the xz binary since fa3194e
Basically making it useless as no compressing or decompressing works.

Tested on Ubuntu 18.04.2

[ole-tange]

Reproducible on Ubuntu 20.04.

Workaround:

It seems to look for xz in current directory - not in $PATH. So if you copy xz to . it works. Or you can do (cd /usr/bin; pxz -dc).

[ole-tange]

This fixes it:

diff --git a/pxz.c b/pxz.c
index 4240b6e..6da940c 100644
--- a/pxz.c
+++ b/pxz.c
@@ -133,7 +133,7 @@ const struct option long_opts[] = {
 };
 
 void __attribute__((noreturn)) run_xz( char **argv, char **envp ) {
-   execve(XZ_BINARY, argv, envp);
+ execvp(XZ_BINARY, argv);
        error(0, errno, "execution of "XZ_BINARY" binary failed");
        exit(EXIT_FAILURE);
 }

[robert-scheck]

I personally started to prefer export CFLAGS="$CFLAGS -DXZ_BINARY='\"/usr/bin/xz\"'" rather than reverting the commit.

[TobiasFaller]

I personally started to prefer export CFLAGS="$CFLAGS -DXZ_BINARY='\"/usr/bin/xz\"'" rather than reverting the commit.

I would be in favour to even go a step further and replace the default value of XZ_BINARY with something that is know to work.
By changing the default value of XZ_BINARY in pzx.c to /usr/bin/xz pxz should be able to run again on most distributions.
Distributions with non-default executable location can then override the definition with the CFLAGS argument if needed.

Reported bug for Gentoo package app-arch/pxz: https://bugs.gentoo.org/887255