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https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=a10f0819c3ddff6527b8ff2524a66079a245468e
commit a10f0819c3ddff6527b8ff2524a66079a245468e
Merge: e37e3f1 3ec9226
Author: Brad King <brad.k...@kitware.com>
AuthorDate: Fri Jan 15 14:53:41 2016 -0500
Commit: CMake Topic Stage <kwro...@kitware.com>
CommitDate: Fri Jan 15 14:53:41 2016 -0500
Merge topic 'rpath-preserve-compiler-defined' into next
3ec92267 install: Do not remove compiler-defined RPATH entries
https://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=3ec9226779776811240bde88a3f173c29aa935b5
commit 3ec9226779776811240bde88a3f173c29aa935b5
Author: Lior Goldberg <liorgol....@gmail.com>
AuthorDate: Fri Dec 25 15:08:51 2015 +0200
Commit: Brad King <brad.k...@kitware.com>
CommitDate: Fri Jan 15 14:53:24 2016 -0500
install: Do not remove compiler-defined RPATH entries
Some compilers may add their own RPATH entries when invoking the linker.
For example, a GCC installation may contain the following definition in
the specs file:
*link_libgcc:
%D -rpath <<some specific rpath in which libstdc++.so can be found>>
In this case binaries may contain RPATH entries that CMake did not add.
When we update the RPATH on installation we must preserve these entries
even if CMake thinks the INSTALL_RPATH value should be empty.
Fix this by always using file(RPATH_CHANGE) and teach it to behave as
file(RPATH_REMOVE) if the actual RPATH in the file is empty after
replacing the build-tree RPATH with the install-tree RPATH. This will
preserve any compiler-added RPATH value instead of removing it.
diff --git a/Source/cmInstallTargetGenerator.cxx
b/Source/cmInstallTargetGenerator.cxx
index 1158a27..5e88fa2 100644
--- a/Source/cmInstallTargetGenerator.cxx
+++ b/Source/cmInstallTargetGenerator.cxx
@@ -791,18 +791,10 @@ cmInstallTargetGenerator
}
// Write a rule to run chrpath to set the install-tree RPATH
- if(newRpath.empty())
- {
- os << indent << "file(RPATH_REMOVE\n"
- << indent << " FILE \"" << toDestDirPath << "\")\n";
- }
- else
- {
- os << indent << "file(RPATH_CHANGE\n"
- << indent << " FILE \"" << toDestDirPath << "\"\n"
- << indent << " OLD_RPATH \"" << oldRpath << "\"\n"
- << indent << " NEW_RPATH \"" << newRpath << "\")\n";
- }
+ os << indent << "file(RPATH_CHANGE\n"
+ << indent << " FILE \"" << toDestDirPath << "\"\n"
+ << indent << " OLD_RPATH \"" << oldRpath << "\"\n"
+ << indent << " NEW_RPATH \"" << newRpath << "\")\n";
}
}
diff --git a/Source/cmSystemTools.cxx b/Source/cmSystemTools.cxx
index 008272c..a89a6e0b 100644
--- a/Source/cmSystemTools.cxx
+++ b/Source/cmSystemTools.cxx
@@ -2565,6 +2565,7 @@ bool cmSystemTools::ChangeRPath(std::string const& file,
*changed = false;
}
int rp_count = 0;
+ bool remove_rpath = true;
cmSystemToolsRPathInfo rp[2];
{
// Parse the ELF binary.
@@ -2622,6 +2623,7 @@ bool cmSystemTools::ChangeRPath(std::string const& file,
// If it contains the new rpath instead then it is okay.
if(cmSystemToolsFindRPath(se[i]->Value, newRPath) != std::string::npos)
{
+ remove_rpath = false;
continue;
}
if(emsg)
@@ -2642,13 +2644,30 @@ bool cmSystemTools::ChangeRPath(std::string const& file,
rp[rp_count].Size = se[i]->Size;
rp[rp_count].Name = se_name[i];
+ std::string::size_type prefix_len = pos;
+
+ // If oldRPath was at the end of the file's RPath, and newRPath is empty,
+ // we should remove the unnecessary ':' at the end.
+ if (newRPath.empty() &&
+ pos > 0 &&
+ se[i]->Value[pos - 1] == ':' &&
+ pos + oldRPath.length() == se[i]->Value.length())
+ {
+ prefix_len--;
+ }
+
// Construct the new value which preserves the part of the path
// not being changed.
- rp[rp_count].Value = se[i]->Value.substr(0, pos);
+ rp[rp_count].Value = se[i]->Value.substr(0, prefix_len);
rp[rp_count].Value += newRPath;
rp[rp_count].Value += se[i]->Value.substr(pos+oldRPath.length(),
oldRPath.npos);
+ if (!rp[rp_count].Value.empty())
+ {
+ remove_rpath = false;
+ }
+
// Make sure there is enough room to store the new rpath and at
// least one null terminator.
if(rp[rp_count].Size < rp[rp_count].Value.length()+1)
@@ -2673,6 +2692,12 @@ bool cmSystemTools::ChangeRPath(std::string const& file,
return true;
}
+ // If the resulting rpath is empty, just remove the entire entry instead.
+ if (remove_rpath)
+ {
+ return cmSystemTools::RemoveRPath(file, emsg, changed);
+ }
+
{
// Open the file for update.
cmsys::ofstream f(file.c_str(),
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