Re: [Bug 1896096] Re: Git version: Build process is broken in block_curl.c.o

[Paolo Bonzini]

Il dom 20 set 2020, 00:40 Toolybird <1896096@bugs.launchpad.net> ha
scritto:

> Looking deeper into this... I believe there are indeed qemu bugs here.
>

You're right.

$ cat test
#! /bin/sh
echo before
env | grep LDFLAGS
LDFLAGS="-pie $LDFLAGS"
echo after
env | grep LDFLAGS

$ ./test
before
after

$ LDFLAGS='-Wl,--as-needed' ./test before
LDFLAGS=-Wl,--as-needed
after
LDFLAGS=-pie -Wl,--as-needed

Because changes to environment variables propagate without having to export
them again.

So we need to unset CFLAGS and LDFLAGS in the configure script.

Paolo

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https://bugs.launchpad.net/bugs/1896096

Title:
  Git version: Build process is broken in block_curl.c.o

Status in QEMU:
  Invalid

Bug description:
  Gcc version: 10.2.0
  Glusterfs: 8.1
  Libguestfs: 1.42

  Configure options used:

  configure \
      --prefix=/usr \
      --sysconfdir=/etc \
      --localstatedir=/var \
      --libexecdir=/usr/lib/qemu \
      --extra-ldflags="$LDFLAGS" \
      --smbd=/usr/bin/smbd \
      --enable-modules \
      --enable-sdl \
      --disable-werror \
      --enable-slirp=system \
      --enable-xfsctl \
      --audio-drv-list="pa alsa sdl"
      
  Error log attached. Here is the beginning:

  /usr/bin/ld: /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../lib/Scrt1.o: 
in function `_start':
  (.text+0x24): undefined reference to `main'
  /usr/bin/ld: libblock-curl.a(block_curl.c.o): in function `curl_block_init':

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