From b41ad3b399c591f8f35eaacf056ffd9016b9e0bc Mon Sep 17 00:00:00 2001
From: Brad King <brad.king@kitware.com>
Date: Wed, 8 Jun 2011 08:46:31 -0400
Subject: Teach find_(library|package) about Linux multiarch (#12037)
Implement support for multiarch as specified here:
http://wiki.debian.org/Multiarch
https://wiki.ubuntu.com/MultiarchSpec
Detect the <arch> part of <prefix>/lib/<arch> from the implicit library
search path from each compiler to set CMAKE_<lang>_LIBRARY_ARCHITECTURE.
Define CMAKE_LIBRARY_ARCHITECTURE using one of these values (they should
all be the same). Teach the find_library and find_package commands to
search <prefix>/lib/<arch> whenever they would search <prefix>/lib.
---
Modules/CMakeCCompiler.cmake.in | 5 +++++
Modules/CMakeCXXCompiler.cmake.in | 5 +++++
Modules/CMakeDetermineCompilerABI.cmake | 11 +++++++++++
Modules/CMakeFortranCompiler.cmake.in | 5 +++++
Modules/Platform/Linux.cmake | 3 +++
Source/cmDocumentVariables.cxx | 20 ++++++++++++++++++++
Source/cmFindBase.cxx | 12 ++++++++++++
Source/cmFindLibraryCommand.cxx | 4 ++++
Source/cmFindPackageCommand.cxx | 24 ++++++++++++++++++------
Source/cmFindPackageCommand.h | 1 +
Source/cmFindPathCommand.cxx | 2 ++
Source/cmFindProgramCommand.cxx | 2 ++
12 files changed, 88 insertions(+), 6 deletions(-)
diff --git a/Modules/CMakeCCompiler.cmake.in b/Modules/CMakeCCompiler.cmake.in
index 051df4c..04a5cec 100644
--- a/Modules/CMakeCCompiler.cmake.in
+++ b/Modules/CMakeCCompiler.cmake.in
@@ -28,6 +28,7 @@ SET(CMAKE_C_LINKER_PREFERENCE 10)
# Save compiler ABI information.
SET(CMAKE_C_SIZEOF_DATA_PTR "@CMAKE_C_SIZEOF_DATA_PTR@")
SET(CMAKE_C_COMPILER_ABI "@CMAKE_C_COMPILER_ABI@")
+SET(CMAKE_C_LIBRARY_ARCHITECTURE "@CMAKE_C_LIBRARY_ARCHITECTURE@")
IF(CMAKE_C_SIZEOF_DATA_PTR)
SET(CMAKE_SIZEOF_VOID_P "${CMAKE_C_SIZEOF_DATA_PTR}")
@@ -37,6 +38,10 @@ IF(CMAKE_C_COMPILER_ABI)
SET(CMAKE_INTERNAL_PLATFORM_ABI "${CMAKE_C_COMPILER_ABI}")
ENDIF(CMAKE_C_COMPILER_ABI)
+IF(CMAKE_C_LIBRARY_ARCHITECTURE)
+ SET(CMAKE_LIBRARY_ARCHITECTURE "@CMAKE_C_LIBRARY_ARCHITECTURE@")
+ENDIF()
+
SET(CMAKE_C_HAS_ISYSROOT "@CMAKE_C_HAS_ISYSROOT@")
@CMAKE_C_OSX_DEPLOYMENT_TARGET_FLAG_CODE@
diff --git a/Modules/CMakeCXXCompiler.cmake.in b/Modules/CMakeCXXCompiler.cmake.in
index d7ae8d9..ea06526 100644
--- a/Modules/CMakeCXXCompiler.cmake.in
+++ b/Modules/CMakeCXXCompiler.cmake.in
@@ -29,6 +29,7 @@ SET(CMAKE_CXX_LINKER_PREFERENCE_PROPAGATES 1)
# Save compiler ABI information.
SET(CMAKE_CXX_SIZEOF_DATA_PTR "@CMAKE_CXX_SIZEOF_DATA_PTR@")
SET(CMAKE_CXX_COMPILER_ABI "@CMAKE_CXX_COMPILER_ABI@")
+SET(CMAKE_CXX_LIBRARY_ARCHITECTURE "@CMAKE_CXX_LIBRARY_ARCHITECTURE@")
IF(CMAKE_CXX_SIZEOF_DATA_PTR)
SET(CMAKE_SIZEOF_VOID_P "${CMAKE_CXX_SIZEOF_DATA_PTR}")
@@ -38,6 +39,10 @@ IF(CMAKE_CXX_COMPILER_ABI)
SET(CMAKE_INTERNAL_PLATFORM_ABI "${CMAKE_CXX_COMPILER_ABI}")
ENDIF(CMAKE_CXX_COMPILER_ABI)
+IF(CMAKE_CXX_LIBRARY_ARCHITECTURE)
+ SET(CMAKE_LIBRARY_ARCHITECTURE "@CMAKE_CXX_LIBRARY_ARCHITECTURE@")
+ENDIF()
+
SET(CMAKE_CXX_HAS_ISYSROOT "@CMAKE_CXX_HAS_ISYSROOT@")
@CMAKE_CXX_OSX_DEPLOYMENT_TARGET_FLAG_CODE@
diff --git a/Modules/CMakeDetermineCompilerABI.cmake b/Modules/CMakeDetermineCompilerABI.cmake
index 7f918e6..39d1f17 100644
--- a/Modules/CMakeDetermineCompilerABI.cmake
+++ b/Modules/CMakeDetermineCompilerABI.cmake
@@ -86,6 +86,17 @@ FUNCTION(CMAKE_DETERMINE_COMPILER_ABI lang src)
SET(CMAKE_${lang}_IMPLICIT_LINK_LIBRARIES "${implicit_libs}" PARENT_SCOPE)
SET(CMAKE_${lang}_IMPLICIT_LINK_DIRECTORIES "${implicit_dirs}" PARENT_SCOPE)
+ # Detect library architecture directory name.
+ IF(CMAKE_LIBRARY_ARCHITECTURE_REGEX)
+ FOREACH(dir ${implicit_dirs})
+ IF("${dir}" MATCHES "/lib/${CMAKE_LIBRARY_ARCHITECTURE_REGEX}$")
+ GET_FILENAME_COMPONENT(arch "${dir}" NAME)
+ SET(CMAKE_${lang}_LIBRARY_ARCHITECTURE "${arch}" PARENT_SCOPE)
+ BREAK()
+ ENDIF()
+ ENDFOREACH()
+ ENDIF()
+
ELSE(CMAKE_DETERMINE_${lang}_ABI_COMPILED)
MESSAGE(STATUS "Detecting ${lang} compiler ABI info - failed")
FILE(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
diff --git a/Modules/CMakeFortranCompiler.cmake.in b/Modules/CMakeFortranCompiler.cmake.in
index 146a6f2..53d9552 100644
--- a/Modules/CMakeFortranCompiler.cmake.in
+++ b/Modules/CMakeFortranCompiler.cmake.in
@@ -34,6 +34,7 @@ ENDIF(UNIX)
# Save compiler ABI information.
SET(CMAKE_Fortran_SIZEOF_DATA_PTR "@CMAKE_Fortran_SIZEOF_DATA_PTR@")
SET(CMAKE_Fortran_COMPILER_ABI "@CMAKE_Fortran_COMPILER_ABI@")
+SET(CMAKE_Fortran_LIBRARY_ARCHITECTURE "@CMAKE_Fortran_LIBRARY_ARCHITECTURE@")
IF(CMAKE_Fortran_SIZEOF_DATA_PTR AND NOT CMAKE_SIZEOF_VOID_P)
SET(CMAKE_SIZEOF_VOID_P "${CMAKE_Fortran_SIZEOF_DATA_PTR}")
@@ -43,5 +44,9 @@ IF(CMAKE_Fortran_COMPILER_ABI)
SET(CMAKE_INTERNAL_PLATFORM_ABI "${CMAKE_Fortran_COMPILER_ABI}")
ENDIF(CMAKE_Fortran_COMPILER_ABI)
+IF(CMAKE_Fortran_LIBRARY_ARCHITECTURE)
+ SET(CMAKE_LIBRARY_ARCHITECTURE "@CMAKE_Fortran_LIBRARY_ARCHITECTURE@")
+ENDIF()
+
SET(CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES "@CMAKE_Fortran_IMPLICIT_LINK_LIBRARIES@")
SET(CMAKE_Fortran_IMPLICIT_LINK_DIRECTORIES "@CMAKE_Fortran_IMPLICIT_LINK_DIRECTORIES@")
diff --git a/Modules/Platform/Linux.cmake b/Modules/Platform/Linux.cmake
index 6490dd1..57d1b34 100644
--- a/Modules/Platform/Linux.cmake
+++ b/Modules/Platform/Linux.cmake
@@ -45,6 +45,9 @@ ELSE(DEFINED CMAKE_INSTALL_SO_NO_EXE)
ENDIF(EXISTS "/etc/debian_version")
ENDIF(DEFINED CMAKE_INSTALL_SO_NO_EXE)
+# Match multiarch library directory names.
+SET(CMAKE_LIBRARY_ARCHITECTURE_REGEX "[a-z0-9_]+-linux-gnu")
+
INCLUDE(Platform/UnixPaths)
# Debian has lib64 paths only for compatibility so they should not be
diff --git a/Source/cmDocumentVariables.cxx b/Source/cmDocumentVariables.cxx
index 994445d..ea25e60 100644
--- a/Source/cmDocumentVariables.cxx
+++ b/Source/cmDocumentVariables.cxx
@@ -822,6 +822,18 @@ void cmDocumentVariables::DefineVariables(cmake* cm)
"set to the output of uname -r. On other "
"systems this is set to major-minor version numbers.",false,
"Variables That Describe the System");
+ cm->DefineProperty
+ ("CMAKE_LIBRARY_ARCHITECTURE", cmProperty::VARIABLE,
+ "Target architecture library directory name, if detected.",
+ "This is the value of CMAKE_<lang>_LIBRARY_ARCHITECTURE as "
+ "detected for one of the enabled languages.",false,
+ "Variables That Describe the System");
+ cm->DefineProperty
+ ("CMAKE_LIBRARY_ARCHITECTURE_REGEX", cmProperty::VARIABLE,
+ "Regex matching possible target architecture library directory names.",
+ "This is used to detect CMAKE_<lang>_LIBRARY_ARCHITECTURE from the "
+ "implicit linker search path by matching the <arch> name.",false,
+ "Variables That Describe the System");
cm->DefineProperty
("CMAKE_HOST_SYSTEM", cmProperty::VARIABLE,
@@ -1360,6 +1372,14 @@ void cmDocumentVariables::DefineVariables(cmake* cm)
"Variables for Languages");
cm->DefineProperty
+ ("CMAKE_<LANG>_LIBRARY_ARCHITECTURE", cmProperty::VARIABLE,
+ "Target architecture library directory name detected for <lang>.",
+ "If the <lang> compiler passes to the linker an architecture-specific "
+ "system library search directory such as <prefix>/lib/<arch> this "
+ "variable contains the <arch> name if/as detected by CMake.",false,
+ "Variables for Languages");
+
+ cm->DefineProperty
("CMAKE_<LANG>_LINKER_PREFERENCE_PROPAGATES", cmProperty::VARIABLE,
"True if CMAKE_<LANG>_LINKER_PREFERENCE propagates across targets.",
"This is used when CMake selects a linker language for a target. "
diff --git a/Source/cmFindBase.cxx b/Source/cmFindBase.cxx
index d0fe99f..ce9deb1 100644
--- a/Source/cmFindBase.cxx
+++ b/Source/cmFindBase.cxx
@@ -72,12 +72,14 @@ void cmFindBase::GenerateDocumentation()
"1. Search paths specified in cmake-specific cache variables. "
"These are intended to be used on the command line with a -DVAR=value. "
"This can be skipped if NO_CMAKE_PATH is passed.\n"
+ "XXX_EXTRA_PREFIX_ENTRY"
" <prefix>/XXX_SUBDIR for each <prefix> in CMAKE_PREFIX_PATH\n"
" CMAKE_XXX_PATH\n"
" CMAKE_XXX_MAC_PATH\n"
"2. Search paths specified in cmake-specific environment variables. "
"These are intended to be set in the user's shell configuration. "
"This can be skipped if NO_CMAKE_ENVIRONMENT_PATH is passed.\n"
+ "XXX_EXTRA_PREFIX_ENTRY"
" <prefix>/XXX_SUBDIR for each <prefix> in CMAKE_PREFIX_PATH\n"
" CMAKE_XXX_PATH\n"
" CMAKE_XXX_MAC_PATH\n"
@@ -92,6 +94,7 @@ void cmFindBase::GenerateDocumentation()
"5. Search cmake variables defined in the Platform files "
"for the current system. This can be skipped if NO_CMAKE_SYSTEM_PATH "
"is passed.\n"
+ "XXX_EXTRA_PREFIX_ENTRY"
" <prefix>/XXX_SUBDIR for each <prefix> in CMAKE_SYSTEM_PREFIX_PATH\n"
" CMAKE_SYSTEM_XXX_PATH\n"
" CMAKE_SYSTEM_XXX_MAC_PATH\n"
@@ -346,6 +349,15 @@ void cmFindBase::AddPrefixPaths(std::vector<std::string> const& in_paths,
{
dir += "/";
}
+ if(subdir == "lib")
+ {
+ const char* arch =
+ this->Makefile->GetDefinition("CMAKE_LIBRARY_ARCHITECTURE");
+ if(arch && *arch)
+ {
+ this->AddPathInternal(dir+"lib/"+arch, pathType);
+ }
+ }
std::string add = dir + subdir;
if(add != "/")
{
diff --git a/Source/cmFindLibraryCommand.cxx b/Source/cmFindLibraryCommand.cxx
index b309376..6355a85 100644
--- a/Source/cmFindLibraryCommand.cxx
+++ b/Source/cmFindLibraryCommand.cxx
@@ -44,6 +44,10 @@ void cmFindLibraryCommand::GenerateDocumentation()
"SEARCH_XXX", "library");
cmSystemTools::ReplaceString(this->GenericDocumentation,
"XXX_SUBDIR", "lib");
+ cmSystemTools::ReplaceString(
+ this->GenericDocumentation,
+ "XXX_EXTRA_PREFIX_ENTRY",
+ " <prefix>/lib/<arch> if CMAKE_LIBRARY_ARCHITECTURE is set, and\n");
cmSystemTools::ReplaceString(this->GenericDocumentation,
"CMAKE_FIND_ROOT_PATH_MODE_XXX",
"CMAKE_FIND_ROOT_PATH_MODE_LIBRARY");
diff --git a/Source/cmFindPackageCommand.cxx b/Source/cmFindPackageCommand.cxx
index b77273c..5f106bc 100644
--- a/Source/cmFindPackageCommand.cxx
+++ b/Source/cmFindPackageCommand.cxx
@@ -243,9 +243,9 @@ void cmFindPackageCommand::GenerateDocumentation()
" <prefix>/(cmake|CMake)/ (W)\n"
" <prefix>/<name>*/ (W)\n"
" <prefix>/<name>*/(cmake|CMake)/ (W)\n"
- " <prefix>/(share|lib)/cmake/<name>*/ (U)\n"
- " <prefix>/(share|lib)/<name>*/ (U)\n"
- " <prefix>/(share|lib)/<name>*/(cmake|CMake)/ (U)\n"
+ " <prefix>/(lib/<arch>|lib|share)/cmake/<name>*/ (U)\n"
+ " <prefix>/(lib/<arch>|lib|share)/<name>*/ (U)\n"
+ " <prefix>/(lib/<arch>|lib|share)/<name>*/(cmake|CMake)/ (U)\n"
"On systems supporting OS X Frameworks and Application Bundles "
"the following directories are searched for frameworks or bundles "
"containing a configuration file:\n"
@@ -257,6 +257,7 @@ void cmFindPackageCommand::GenerateDocumentation()
" <prefix>/<name>.app/Contents/Resources/CMake/ (A)\n"
"In all cases the <name> is treated as case-insensitive and corresponds "
"to any of the names specified (<package> or names given by NAMES). "
+ "Paths with lib/<arch> are enabled if CMAKE_LIBRARY_ARCHITECTURE is set. "
"If PATH_SUFFIXES is specified the suffixes are appended to each "
"(W) or (U) directory entry one-by-one.\n"
"This set of directories is intended to work in cooperation with "
@@ -362,6 +363,13 @@ bool cmFindPackageCommand
// Check for debug mode.
this->DebugMode = this->Makefile->IsOn("CMAKE_FIND_DEBUG_MODE");
+ // Lookup target architecture, if any.
+ if(const char* arch =
+ this->Makefile->GetDefinition("CMAKE_LIBRARY_ARCHITECTURE"))
+ {
+ this->LibraryArchitecture = arch;
+ }
+
// Lookup whether lib64 paths should be used.
if(this->Makefile->PlatformIs64Bit() &&
this->Makefile->GetCMakeInstance()
@@ -2189,6 +2197,10 @@ bool cmFindPackageCommand::SearchPrefix(std::string const& prefix_in)
// Construct list of common install locations (lib and share).
std::vector<std::string> common;
+ if(!this->LibraryArchitecture.empty())
+ {
+ common.push_back("lib/"+this->LibraryArchitecture);
+ }
if(this->UseLib64Paths)
{
common.push_back("lib64");
@@ -2196,7 +2208,7 @@ bool cmFindPackageCommand::SearchPrefix(std::string const& prefix_in)
common.push_back("lib");
common.push_back("share");
- // PREFIX/(share|lib)/cmake/(Foo|foo|FOO).*/
+ // PREFIX/(lib/ARCH|lib|share)/cmake/(Foo|foo|FOO).*/
{
cmFindPackageFileList lister(this);
lister
@@ -2210,7 +2222,7 @@ bool cmFindPackageCommand::SearchPrefix(std::string const& prefix_in)
}
}
- // PREFIX/(share|lib)/(Foo|foo|FOO).*/
+ // PREFIX/(lib/ARCH|lib|share)/(Foo|foo|FOO).*/
{
cmFindPackageFileList lister(this);
lister
@@ -2223,7 +2235,7 @@ bool cmFindPackageCommand::SearchPrefix(std::string const& prefix_in)
}
}
- // PREFIX/(share|lib)/(Foo|foo|FOO).*/(cmake|CMake)/
+ // PREFIX/(lib/ARCH|lib|share)/(Foo|foo|FOO).*/(cmake|CMake)/
{
cmFindPackageFileList lister(this);
lister
diff --git a/Source/cmFindPackageCommand.h b/Source/cmFindPackageCommand.h
index 4229d37..2b2e1da 100644
--- a/Source/cmFindPackageCommand.h
+++ b/Source/cmFindPackageCommand.h
@@ -141,6 +141,7 @@ private:
bool DebugMode;
bool UseLib64Paths;
bool PolicyScope;
+ std::string LibraryArchitecture;
std::vector<std::string> Names;
std::vector<std::string> Configs;
std::set<std::string> IgnoredPaths;
diff --git a/Source/cmFindPathCommand.cxx b/Source/cmFindPathCommand.cxx
index 83b651b..846d187 100644
--- a/Source/cmFindPathCommand.cxx
+++ b/Source/cmFindPathCommand.cxx
@@ -46,6 +46,8 @@ void cmFindPathCommand::GenerateDocumentation()
cmSystemTools::ReplaceString(this->GenericDocumentation,
"XXX_SUBDIR", "include");
cmSystemTools::ReplaceString(this->GenericDocumentation,
+ "XXX_EXTRA_PREFIX_ENTRY", "");
+ cmSystemTools::ReplaceString(this->GenericDocumentation,
"CMAKE_FIND_ROOT_PATH_MODE_XXX",
"CMAKE_FIND_ROOT_PATH_MODE_INCLUDE");
if(!this->IncludeFileInPath)
diff --git a/Source/cmFindProgramCommand.cxx b/Source/cmFindProgramCommand.cxx
index 71cfdcb..7c56ad7 100644
--- a/Source/cmFindProgramCommand.cxx
+++ b/Source/cmFindProgramCommand.cxx
@@ -42,6 +42,8 @@ void cmFindProgramCommand::GenerateDocumentation()
cmSystemTools::ReplaceString(this->GenericDocumentation,
"XXX_SUBDIR", "[s]bin");
cmSystemTools::ReplaceString(this->GenericDocumentation,
+ "XXX_EXTRA_PREFIX_ENTRY", "");
+ cmSystemTools::ReplaceString(this->GenericDocumentation,
"CMAKE_FIND_ROOT_PATH_MODE_XXX",
"CMAKE_FIND_ROOT_PATH_MODE_PROGRAM");
}
--
cgit v0.12