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authorGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2014-07-30 22:36:34 +0200
committerGravatar Thomas Petazzoni <thomas.petazzoni@free-electrons.com>2014-07-30 23:27:19 +0200
commit97703978ac870ce2b14ad144f8e082de82aa2c64 (patch)
tree17c0d2fa9d31fddf27c1e18520ed730c02f6e6cf /package
parent5d66a9b1fb67cf009fe4f15028c02a8386109dc5 (diff)
downloadbuildroot-97703978ac870ce2b14ad144f8e082de82aa2c64.tar.gz
buildroot-97703978ac870ce2b14ad144f8e082de82aa2c64.tar.bz2
support/libtool: make -static behave like -all-static
After switching TARGET_LDFLAGS from --static to -static, one issue appears: from the point of view of libtool, -static only means to link statically against the 'uninstalled libtool libraries' (i.e the libraries that libtool has built in the current package), but otherwise links dynamically with the other libraries. To really get a completely static build, you need to pass -all-static to libtool. Unfortunately, -all-static is only a valid option for libtool, not as a general LDFLAGS, so we cannot to TARGET_LDFLAGS = -all-static without breaking virtually all packages. As pointed out 10 years ago on the libtool mailing list, the current naming of the options is very confusing and the source of issues, and there was a proposal to change -static to have the behavior of -all-static, and instead introduce a separate -lt-static to have the current behavior of -static. But that never got merged, because it was breaking the current behavior. See: http://lists.gnu.org/archive/html/libtool/2004-11/msg00017.html However, in Buildroot, when we pass -static, we really mean it, and we want a completely static build. Therefore, this patch adapts our ltmain.sh patches so that they alter the behavior of -static to make it work like -all-static. The changes are small and quite easy to understand, and have been tested to work fine with a small selection of packages. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
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