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mongrel2: allow using uClibc but only on certain architectures

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mongrel2 uses the {get,make,swap}context functions:

 - With glibc, no problem, they are available on all supported
   architectures

 - With uClibc, they are available only on a subset of the
   architectures. Until now, only BR2_UCLIBC_VERSION_SNAPSHOT
   configurations were allowed to select mongrel2, but we are going to
   get rid of the uClibc snapshot version, and uClibc-ng is as capable
   as the uClibc snapshot. However, only certain architectures have
   the *context() functions.

 - With musl, there is no *context() support.

Since this dependency is quite complicated, we introduce a
BR2_PACKAGE_MONGREL2_LIBC_SUPPORTS hidden boolean to encode which C
libraries are supported.

Also, listing the supported uClibc architectures would be too long in
the comment, so we simply indicate that the package needs uClibc or
glibc.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Thomas Petazzoni 2016-01-27 22:25:25 +01:00 committed by Peter Korsgaard
parent 60a062b74f
commit d9c26b1ffc
1 changed files with 12 additions and 10 deletions
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22
package/mongrel2/Config.in
View file

@ -1,10 +1,16 @@
comment "mongrel2 needs a toolchain w/ C++, threads, wchar, dynamic library"
depends on BR2_UCLIBC_VERSION_SNAPSHOT || \
BR2_TOOLCHAIN_USES_GLIBC || \
BR2_arm
# mongrel2 uses {get,make,swap}context() functions, which are
# available in glibc for all architectures and in uClibc only for a
# subset of the architectures
config BR2_PACKAGE_MONGREL2_LIBC_SUPPORTS
bool
default y if BR2_TOOLCHAIN_USES_GLIBC
default y if BR2_TOOLCHAIN_USES_UCLIBC && \
(BR2_arm || BR2_armeb || BR2_i386 || BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el || BR2_x86_64)
comment "mongrel2 needs a uClibc or glibc toolchain w/ C++, threads, wchar, dynamic library"
depends on !BR2_INSTALL_LIBSTDCPP || \
!BR2_TOOLCHAIN_HAS_THREADS || !BR2_USE_WCHAR || \
BR2_STATIC_LIBS
BR2_STATIC_LIBS || !BR2_PACKAGE_MONGREL2_LIBC_SUPPORTS
config BR2_PACKAGE_MONGREL2
bool "mongrel2"
@ -14,11 +20,7 @@ config BR2_PACKAGE_MONGREL2
depends on BR2_TOOLCHAIN_HAS_THREADS # zeromq
depends on BR2_USE_WCHAR # zeromq -> util-linux
depends on !BR2_STATIC_LIBS # uses dlopen()
# {get,make,swap}context functions present in
# {e,}glibc and in uClibc's master branch. Source has arm workaround
depends on BR2_UCLIBC_VERSION_SNAPSHOT || \
BR2_TOOLCHAIN_USES_GLIBC || \
BR2_arm
depends on BR2_PACKAGE_MONGREL2_LIBC_SUPPORTS
help
Mongrel2 is an application, language, and network architecture
agnostic web server that focuses on web applications using