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New: Host QEMU does not build with SDL support because of pkg-config

Buildroot bugzilla at busybox.net 1 participant 3 messages Jun 3, 2017

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#0 lore raw

https://bugs.busybox.net/show_bug.cgi?id=9936

Bug ID: 9936
Summary: Host QEMU does not build with SDL support because of
pkg-config
Product: buildroot
Version: 2017.02
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P5
Component: Other
Assignee: unassigned at buildroot.uclibc.org
Reporter: ciro.santilli at gmail.com
CC: buildroot at uclibc.org
Target Milestone: ---

I enable:

BR2_PACKAGE_HOST_QEMU=y
BR2_PACKAGE_HOST_QEMU_LINUX_USER_MODE=y
BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE=y
BR2_PACKAGE_HOST_QEMU_VDE2=y

on the config.

Host QEMU builds and works with VNC, but "-display sdl" is not available.

The configuration logs say:

SDL support no

However, if I do ./configure directly from host on the QEMU tree, SDL support is available, and builds with it, since I do have the libsdl2-dev package installed in Ubuntu 17.04.

I think the problem is the:

PKG_CONFIG="/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output/host/usr/bin/pkg-config"

and:

/home/ciro/bak/git/linux-kernel-module-cheat/buildroot/output/host/usr/bin/pkg-config sdl2

is wrongly false, while on host:

pkg-config sdl2

is true.

A dirty workaround is:

package/qemu/qemu.mk +1 -0
index 66efcba..1e09ea4 100644
@@ -74,6 +74,7 @@ HOST_QEMU_SYS_ARCH ?= $(HOST_QEMU_ARCH)
 
 ifeq ($(BR2_PACKAGE_HOST_QEMU_SYSTEM_MODE),y)
 HOST_QEMU_TARGETS += $(HOST_QEMU_SYS_ARCH)-softmmu
+HOST_QEMU_OPTS += --enable-sdl --with-sdlabi=2.0
 HOST_QEMU_OPTS += --enable-system --enable-fdt
 HOST_QEMU_DEPENDENCIES += host-dtc
 else
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author
#2 lore raw

[Buildroot] [Bug 9936] Host QEMU does not build with SDL support because of pkg-config

In reply to bugzilla at busybox.net

https://bugs.busybox.net/show_bug.cgi?id=9936

Thomas Petazzoni <[email protected]> changed:

What |Removed |Added
----------------------------------------------------------------------------

             Status|NEW                         |RESOLVED
         Resolution|---                         |WONTFIX

--- Comment #2 from Thomas Petazzoni <[email protected]> --- We don't want to do this, because it would mean host-qemu would rely on your host installed SDL libraries, which is not what we want. In the current state of things, I don't think we are going to provide a host-qemu package that has SDL/graphics support as that would require to package too many host libraries in Buildroot.

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