Add a firmware path config option to configure.  Multiple directories
are accepted, with the usual colon as separator.  Default value is
${prefix}/share/qemu-firmware.  The path is searched in addition to the
current search path (typically ${prefix}/share/qemu).

This prepares qemu for the planned split of the prebuilt firmware blobs
into a separate project.

Distributions can also use this to get rid of the firmware symlink farm
and add -- for example -- /usr/share/seabios to the firmware path
instead.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 configure             |  6 ++++++
 vl.c                  | 12 +++++++++---
 scripts/create_config |  2 +-
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/configure b/configure
index fd7e3a5e81..870bdbd3e4 100755
--- a/configure
+++ b/configure
@@ -332,6 +332,7 @@ modules="no"
 prefix="/usr/local"
 mandir="\${prefix}/share/man"
 datadir="\${prefix}/share"
+firmwarepath="\${prefix}/share/qemu-firmware"
 qemu_docdir="\${prefix}/share/doc/qemu"
 bindir="\${prefix}/bin"
 libdir="\${prefix}/lib"
@@ -915,6 +916,8 @@ for opt do
   ;;
   --localstatedir=*) local_statedir="$optarg"
   ;;
+  --firmwarepath=*) firmwarepath="$optarg"
+  ;;
   --sbindir=*|--sharedstatedir=*|\
   --oldincludedir=*|--datarootdir=*|--infodir=*|--localedir=*|\
   --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
@@ -1418,6 +1421,7 @@ Advanced options (experts only):
   --libdir=PATH            install libraries in PATH
   --sysconfdir=PATH        install config in PATH$confsuffix
   --localstatedir=PATH     install local state in PATH (set at runtime on win32)
+  --firmwarepath=PATH      search PATH for firmware files
   --with-confsuffix=SUFFIX suffix for QEMU data inside datadir/libdir/sysconfdir [$confsuffix]
   --enable-debug           enable common debug build options
   --disable-strip          disable stripping binaries
@@ -5259,6 +5263,7 @@ libs_softmmu="$pixman_libs $libs_softmmu"
 
 echo "Install prefix    $prefix"
 echo "BIOS directory    $(eval echo $qemu_datadir)"
+echo "firmware path     $(eval echo $firmwarepath)"
 echo "binary directory  $(eval echo $bindir)"
 echo "library directory $(eval echo $libdir)"
 echo "module directory  $(eval echo $qemu_moddir)"
@@ -5450,6 +5455,7 @@ echo "mandir=$mandir" >> $config_host_mak
 echo "sysconfdir=$sysconfdir" >> $config_host_mak
 echo "qemu_confdir=$qemu_confdir" >> $config_host_mak
 echo "qemu_datadir=$qemu_datadir" >> $config_host_mak
+echo "qemu_firmwarepath=$firmwarepath" >> $config_host_mak
 echo "qemu_docdir=$qemu_docdir" >> $config_host_mak
 echo "qemu_moddir=$qemu_moddir" >> $config_host_mak
 if test "$mingw32" = "no" ; then
diff --git a/vl.c b/vl.c
index 37a3401920..8f4bbe3825 100644
--- a/vl.c
+++ b/vl.c
@@ -3048,6 +3048,7 @@ int main(int argc, char **argv, char **envp)
     Error *main_loop_err = NULL;
     Error *err = NULL;
     bool list_data_dirs = false;
+    char **dirs;
     typedef struct BlockdevOptions_queue {
         BlockdevOptions *bdo;
         Location loc;
@@ -4232,11 +4233,16 @@ int main(int argc, char **argv, char **envp)
         qemu_set_log(0);
     }
 
-    /* If no data_dir is specified then try to find it relative to the
-       executable path.  */
+    /* add configured firmware directories */
+    dirs = g_strsplit(CONFIG_QEMU_FIRMWAREPATH, ":", 0);
+    for (i = 0; dirs[i] != NULL; i++) {
+        qemu_add_data_dir(dirs[i]);
+    }
+
+    /* try to find datadir relative to the executable path */
     qemu_add_data_dir(os_find_datadir());
 
-    /* If all else fails use the install path specified when building. */
+    /* add the datadir specified when building */
     qemu_add_data_dir(CONFIG_QEMU_DATADIR);
 
     /* -L help lists the data directories and exits. */
diff --git a/scripts/create_config b/scripts/create_config
index e6929dd61e..603b826886 100755
--- a/scripts/create_config
+++ b/scripts/create_config
@@ -15,7 +15,7 @@ case $line in
     echo "#define QEMU_VERSION_MINOR $minor"
     echo "#define QEMU_VERSION_MICRO $micro"
     ;;
- qemu_*dir=*) # qemu-specific directory configuration
+ qemu_*dir=* | qemu_*path=*) # qemu-specific directory configuration
     name=${line%=*}
     value=${line#*=}
     define_name=$(echo $name | LC_ALL=C tr '[a-z]' '[A-Z]')
-- 
2.9.3

On 13/09/2017 14:09, Gerd Hoffmann wrote:
> Add a firmware path config option to configure.  Multiple directories
> are accepted, with the usual colon as separator.  Default value is
> ${prefix}/share/qemu-firmware.  The path is searched in addition to the
> current search path (typically ${prefix}/share/qemu).
> 
> This prepares qemu for the planned split of the prebuilt firmware blobs
> into a separate project.
> 
> Distributions can also use this to get rid of the firmware symlink farm
> and add -- for example -- /usr/share/seabios to the firmware path
> instead.
> 
> Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
> ---
>  configure             |  6 ++++++
>  vl.c                  | 12 +++++++++---
>  scripts/create_config |  2 +-
>  3 files changed, 16 insertions(+), 4 deletions(-)
> 
> diff --git a/configure b/configure
> index fd7e3a5e81..870bdbd3e4 100755
> --- a/configure
> +++ b/configure
> @@ -332,6 +332,7 @@ modules="no"
>  prefix="/usr/local"
>  mandir="\${prefix}/share/man"
>  datadir="\${prefix}/share"
> +firmwarepath="\${prefix}/share/qemu-firmware"
>  qemu_docdir="\${prefix}/share/doc/qemu"
>  bindir="\${prefix}/bin"
>  libdir="\${prefix}/lib"
> @@ -915,6 +916,8 @@ for opt do
>    ;;
>    --localstatedir=*) local_statedir="$optarg"
>    ;;
> +  --firmwarepath=*) firmwarepath="$optarg"
> +  ;;
>    --sbindir=*|--sharedstatedir=*|\
>    --oldincludedir=*|--datarootdir=*|--infodir=*|--localedir=*|\
>    --htmldir=*|--dvidir=*|--pdfdir=*|--psdir=*)
> @@ -1418,6 +1421,7 @@ Advanced options (experts only):
>    --libdir=PATH            install libraries in PATH
>    --sysconfdir=PATH        install config in PATH$confsuffix
>    --localstatedir=PATH     install local state in PATH (set at runtime on win32)
> +  --firmwarepath=PATH      search PATH for firmware files

Maybe --firmwaredir or --with-firmwaredir (because firmwaredir is not
one of the "standard" directories)?

> @@ -4232,11 +4233,16 @@ int main(int argc, char **argv, char **envp)
>          qemu_set_log(0);
>      }
>  
> -    /* If no data_dir is specified then try to find it relative to the
> -       executable path.  */
> +    /* add configured firmware directories */
> +    dirs = g_strsplit(CONFIG_QEMU_FIRMWAREPATH, ":", 0);

Windows probably wants to use ; here, so you can use
G_SEARCHPATH_SEPARATOR_S instead of ":".

Thanks,

Paolo

> +    for (i = 0; dirs[i] != NULL; i++) {
> +        qemu_add_data_dir(dirs[i]);
> +    }
> +
> +    /* try to find datadir relative to the executable path */
>      qemu_add_data_dir(os_find_datadir());
>  
> -    /* If all else fails use the install path specified when building. */
> +    /* add the datadir specified when building */
>      qemu_add_data_dir(CONFIG_QEMU_DATADIR);
>  
>      /* -L help lists the data directories and exits. */
> diff --git a/scripts/create_config b/scripts/create_config
> index e6929dd61e..603b826886 100755
> --- a/scripts/create_config
> +++ b/scripts/create_config
> @@ -15,7 +15,7 @@ case $line in
>      echo "#define QEMU_VERSION_MINOR $minor"
>      echo "#define QEMU_VERSION_MICRO $micro"
>      ;;
> - qemu_*dir=*) # qemu-specific directory configuration
> + qemu_*dir=* | qemu_*path=*) # qemu-specific directory configuration
>      name=${line%=*}
>      value=${line#*=}
>      define_name=$(echo $name | LC_ALL=C tr '[a-z]' '[A-Z]')
> 

  Hi,

> > +  --firmwarepath=PATH      search PATH for firmware files
> 
> Maybe --firmwaredir or --with-firmwaredir (because firmwaredir is not
> one of the "standard" directories)?

I've intentionally named this "path" because it can actually have
multiple directories.

Or do you mean something else?  If so --verbose please.

> > +    /* add configured firmware directories */
> > +    dirs = g_strsplit(CONFIG_QEMU_FIRMWAREPATH, ":", 0);
> 
> Windows probably wants to use ; here, so you can use
> G_SEARCHPATH_SEPARATOR_S instead of ":".

Ah, cool, didn't know this exists.  Fixing ...

cheers,
  Gerd

On 14/09/2017 10:36, Gerd Hoffmann wrote:
>   Hi,
> 
>>> +  --firmwarepath=PATH      search PATH for firmware files
>>
>> Maybe --firmwaredir or --with-firmwaredir (because firmwaredir is not
>> one of the "standard" directories)?
> 
> I've intentionally named this "path" because it can actually have
> multiple directories.
> 
> Or do you mean something else?  If so --verbose please.

No, you're right.

Paolo

>>> +    /* add configured firmware directories */
>>> +    dirs = g_strsplit(CONFIG_QEMU_FIRMWAREPATH, ":", 0);
>>
>> Windows probably wants to use ; here, so you can use
>> G_SEARCHPATH_SEPARATOR_S instead of ":".
> 
> Ah, cool, didn't know this exists.  Fixing ...
> 
> cheers,
>   Gerd
>