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freetype: fix double installation

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Eric_L on IRC reported that the following strange behavior: the first
installation of freetype works, and then each time you do "make
freetype-dirclean freetype", it fails and works alternatively, in a
fully reproducible manner.

After some investigation, it turns out that the problem is caused by
the creation of the symbolic link /usr/include/freetype2/freetype ->
/usr/include/freetype2 for backward compatibility reasons by
freetype.mk, in a post-staging installation hook. As the symbolic link
is created *after* the installation, the first installation works
fine. However, the second installation fails because the freetype
build system does:

 ./builds/unix/mkinstalldirs \
         /home/thomas/projets/buildroot/output/target/usr/include/freetype2/config
  [...]
 rm -f /home/thomas/projets/buildroot/output/target/usr/include/freetype2/freetype/config/*
 rmdir /home/thomas/projets/buildroot/output/target/usr/include/freetype2/freetype/config
  [...]
 /usr/bin/install -c -m 644 ./builds/unix/ftconfig.h               \
       /home/thomas/projets/buildroot/output/target/usr/include/freetype2/config/ftconfig.h

This last line fails, because due to the symbolic link mentioned above, the
command 'rmdir
/home/thomas/projets/buildroot/output/target/usr/include/freetype2/freetype/config'
has in fact the consequence of deleting the 'config' directory created
by the mkinstalldirs command.

The proposed solution to solve this problem is to remove the symbolic link
in a pre-install hook, run the installation, and restore the symbolic link.

[Peter: minor tweaks to commit message / comment]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Thomas Petazzoni
2014-07-03 22:19:24 +02:00
committed by Peter Korsgaard
parent d13402248b
commit cc5b8e7230
1 changed files with 16 additions and 2 deletions
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18
package/freetype/freetype.mk
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@@ -70,12 +70,26 @@ define FREETYPE_FIX_CONFIG_FILE_LIBS
endef
FREETYPE_POST_INSTALL_STAGING_HOOKS += FREETYPE_FIX_CONFIG_FILE_LIBS
# Version 2.5.1 reorganized headers out of freetype2/freetype
# It's unexpected for some packages so symlink it until it spreads upstream
# Version 2.5.1 reorganized headers out of freetype2/freetype.
# It is unexpected for some packages so symlink it until it spreads
# upstream. Note that we also have to remove the symlink prior to the
# installation process, because the installation process of freetype
# removes usr/include/Freetype2/freetype/config, before installing
# something in usr/include/Freetype2/config/ which no longer exists
# due to the symbolic link.
define FREETYPE_REMOVE_FREETYPE_INCLUDE_SYMLINK
$(RM) -f $(STAGING_DIR)/usr/include/freetype2/freetype
endef
FREETYPE_PRE_INSTALL_STAGING_HOOKS += FREETYPE_REMOVE_FREETYPE_INCLUDE_SYMLINK
define FREETYPE_FIX_FREETYPE_INCLUDE
ln -sf . $(STAGING_DIR)/usr/include/freetype2/freetype
endef
FREETYPE_POST_INSTALL_STAGING_HOOKS += FREETYPE_FIX_FREETYPE_INCLUDE
define HOST_FREETYPE_REMOVE_FREETYPE_INCLUDE_SYMLINK
$(RM) -f $(HOST_DIR)/usr/include/freetype2/freetype
endef
HOST_FREETYPE_PRE_INSTALL_HOOKS += FREETYPE_REMOVE_FREETYPE_INCLUDE_SYMLINK
define HOST_FREETYPE_FIX_FREETYPE_INCLUDE
ln -sf . $(HOST_DIR)/usr/include/freetype2/freetype
endef