Signed-off-by: Marty E. Plummer <[email protected]>
---
On mingw-w64 (and perhaps cygwin and mingw.org), there are two forms of
non-static libraries. Standard *.dll libraries are for runtime and are
loaded from %PATH% on windows systems, and are typically stored in
either /bin or /usr/bin on mingw-w64 cross-toolchain filesystems. Import
libraries, *.dll.a, are used when linking and live in the ''normal''
libdirs, eg, /lib, /usr/lib and so on.
A number of ebuilds which otherwise work on mingw-w64 crossdev
toolchains exhibit failure due to usage of get_libname not being able to
specify which of the two types are required.
For example, sys-libs/ncurses, uses the following snippet of code:
ln -sf libncurses$(get_libname)
"${ED}"/usr/$(get_libdir)/libcurses$(get_libname) || die
in order to create a 'libcurses.so -> libncurses.so' symlink.
However, on a crossdev-built mingw-w64 toolchain, one will end up with a
broken 'libcurses.dll -> libncurses.dll' symlink, which should properly
be a 'libcurses.dll.a -> libncurses.dll.a' symlink, as the symlink here
is provided to allow linking with -lcurses instead of -lncurses.
eclass/multilib.eclass | 52 ++++++++++++++++++++++++++++++++++++++----
1 file changed, 48 insertions(+), 4 deletions(-)
diff --git a/eclass/multilib.eclass b/eclass/multilib.eclass
index 350b6f949d1..6a99f5977ec 100644
--- a/eclass/multilib.eclass
+++ b/eclass/multilib.eclass
@@ -239,26 +239,70 @@ get_exeext() {
}
# @FUNCTION: get_libname
-# @USAGE: [version]
+# @USAGE: --link|--run [version]
# @DESCRIPTION:
# Returns libname with proper suffix {.so,.dylib,.dll,etc} and optionally
# supplied version for the current platform identified by CHOST.
#
+# If '--link' argument is passed, the linktime library's suffix is returned,
+# as in the file that must exist to let `gcc -lfoo foo.c -o foo` to work.
+# If '--run' argument is passed, the runtime library's suffix is returned.
+#
+# In most unix-like platforms the two are identical, however on mingw-w64 the
+# linktime library has the suffix of '.dll.a' and the runtime library '.dll'.
+#
# Example:
# get_libname ${PV}
# Returns: .so.${PV} (ELF) || .${PV}.dylib (MACH) || ...
+# get_libname --link
+# Returns: .so (ELF) || .dylib (MACH) || .dll.a (PE32) || ...
get_libname() {
- local libname
- local ver=$1
+ local libtype="undefined"
+ local libname opt ver
+ for opt; do
+ case "${opt}" in
+ --link)
+ libtype="link"
+ shift
+ ;;
+ --run)
+ libtype="run"
+ shift
+ ;;
+ *)
+ ;;
+ esac
+ done
+ ver="$1"
+ # general unixy types
case ${CHOST} in
*-cygwin*) libname="dll.a";; # import lib
- mingw*|*-mingw*) libname="dll";;
*-darwin*) libname="dylib";;
*-mint*) libname="irrelevant";;
hppa*-hpux*) libname="sl";;
*) libname="so";;
esac
+ # wierd mingw-w64 stuff, maybe even cygwin
+ case ${CHOST} in
+ mingw*|*-mingw*)
+ case ${libtype} in
+ link)
+ libname="dll.a" # import library
+ ;;
+ run)
+ libname="dll" # runtime library
+ ;;
+ undefined)
+ eerror "please specify either --link or
--run to get_libname"
+ eerror "for mingw builds, as there are
two types of libraries"
+ eerror "on this platform"
+ die
+ ;;
+ esac
+ ;;
+ esac
+
if [[ -z $* ]] ; then
echo ".${libname}"
else
--
2.18.0
