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package/libxslt: fix bfin compile

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Fixes:
http://autobuild.buildroot.org/results/df4/df4bf247c92847024dff88ce58a5f47343f06258/
http://autobuild.buildroot.org/results/b33/b33f34dc23f7429928d7d0b1478e71d8e7fffed2/
http://autobuild.buildroot.org/results/cad/cad02570ec039511b9495e82d98439e9f0724b37/

And many more.

A GCC bug is triggered when the compiler is run with an optimization level
'-Os/-O2/-O3' for the Blackfin architecture:

```
error: unable to find a register to spill in class 'CCREGS'
```

Workaround this bug by forcing an optimization level of '-O1' when building
libxslt for the Blackfin architecture.

See GCC bug report:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77311

[Peter: add reference to autobuilders failures]
Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Jörg Krause 2016-09-21 22:21:07 +02:00 committed by Peter Korsgaard
parent 0cd9000103
commit 3d0ade5542
1 changed files with 6 additions and 0 deletions
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6
package/libxslt/libxslt.mk
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@ -19,6 +19,12 @@ LIBXSLT_CONF_OPTS = \
LIBXSLT_CONFIG_SCRIPTS = xslt-config
LIBXSLT_DEPENDENCIES = libxml2
# GCC bug with Os/O2/O3, PR77311
# error: unable to find a register to spill in class 'CCREGS'
ifeq ($(BR2_bfin),y)
LIBXSLT_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -O1"
endif
# If we have enabled libgcrypt then use it, else disable crypto support.
ifeq ($(BR2_PACKAGE_LIBGCRYPT),y)
LIBXSLT_DEPENDENCIES += libgcrypt