Patchwork [2/3] manual: add faq entry explaining why Buildroot does not support Qt{4, 5} coexistence

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Submitter Samuel Martin
Date July 7, 2013, 6:44 p.m.
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Permalink /patch/257377/
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Samuel Martin - July 7, 2013, 6:44 p.m.
Signed-off-by: Samuel Martin <>
 docs/manual/faq-troubleshooting.txt | 15 +++++++++++++++
 1 file changed, 15 insertions(+)


diff --git a/docs/manual/faq-troubleshooting.txt b/docs/manual/faq-troubleshooting.txt
index f91a8ef..d190d26 100644
--- a/docs/manual/faq-troubleshooting.txt
+++ b/docs/manual/faq-troubleshooting.txt
@@ -126,3 +126,18 @@  directory as the new root, will most likely fail.
 If you want to run the target filesystem inside a chroot, or as an NFS
 root, then use the tarball image generated in +images/+ and extract it
 as root.
+Why Qt4 and Qt5 cannot coexist in Buildroot?
+Qt4 and Qt5 provide different set of APIs, so they are not equivalent.
+They usually may coexist on the same system, but not in Buildroot because
+host-tools like +qmake+ are not properly handled between those two versions.
+This host-tools issue cause troubles when building projects or packages
+using qmake (inside and outside Buildroot).
+Thus, there is an explicit choice for what version of Qt should be build by