rocprofiler-sdk-codeobj: use pkg-config to find libdw / libelf (#749)

* rocprofiler-sdk-codeobj: use pkg-config to find libdw / libelf The current version of source/lib/rocprofiler-sdk-codeobj/CMakeLists.txt adds -ldw and -lelf to target_link_libraries. However, on a system where libdw-dev / libelf-dev is missing, the cmake configuration phase will run properly and a compile time error will eventually be raised. This patch changes the CMakelists.txt to search for libelf libdw and configures the target as needed. Systems missing the required support should report an error when running cmake instead of in the middle of the compilation. * Use INTERFACE targets * Resolve issues with Findlib{dw,elf} --------- Co-authored-by: Jonathan R. Madsen <jonathanrmadsen@gmail.com>
2024-04-12 10:48:35 +02:00
parent 87490d0018
commit 066e659d6e
8 changed files with 188 additions and 16 deletions
@@ -0,0 +1,79 @@
+# Try to find libdw headers and libraries.
+#
+# Usage of this module as follows:
+#
+#     find_package(libdw)
+#
+# Variables used by this module, they can change the default behaviour and need
+# to be set before calling find_package:
+#
+#  libdw_ROOT         Set this variable to the root installation of
+#                     libdw if the module has problems finding the
+#                     proper installation path.
+#
+# Variables defined by this module:
+#
+#  libdw_FOUND              System has libdw libraries and headers
+#  libdw_LIBRARIES          The libdw library
+#  libdw_INCLUDE_DIRS       The location of libdw headers
+#
+# Interface targets defined by this module:
+#
+#   libdw::libdw
+#
+
+find_package(PkgConfig)
+
+if(PkgConfig_FOUND)
+    pkg_check_modules(DW libdw)
+    if(DW_FOUND)
+        set(libdw_INCLUDE_DIR
+            "${DW_INCLUDE_DIRS}"
+            CACHE FILEPATH "libdw include directory")
+        set(libdw_LIBRARY
+            "${DW_LIBRARIES}"
+            CACHE FILEPATH "libdw libraries")
+    endif()
+endif()
+
+if(NOT PkgConfig_FOUND OR NOT DW_FOUND)
+    find_path(
+        libdw_ROOT_DIR
+        NAMES include/elfutils/libdw.h
+        HINTS ${libdw_ROOT}
+        PATHS ${libdw_ROOT})
+
+    mark_as_advanced(libdw_ROOT_DIR)
+
+    find_path(
+        libdw_INCLUDE_DIR
+        NAMES elfutils/libdw.h
+        HINTS ${libdw_ROOT}
+        PATHS ${libdw_ROOT}
+        PATH_SUFFIXES include)
+
+    find_library(
+        libdw_LIBRARY
+        NAMES dw
+        HINTS ${libdw_ROOT}
+        PATHS ${libdw_ROOT}
+        PATH_SUFFIXES lib lib64)
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(libdw DEFAULT_MSG libdw_LIBRARY libdw_INCLUDE_DIR)
+
+if(libdw_FOUND)
+    if(NOT TARGET libdw::libdw)
+        add_library(libdw::libdw INTERFACE IMPORTED)
+    endif()
+
+    if(TARGET PkgConfig::DW AND DW_FOUND)
+        target_link_libraries(libdw::libdw INTERFACE PkgConfig::DW)
+    else()
+        target_link_libraries(libdw::libdw INTERFACE ${libdw_LIBRARY})
+        target_include_directories(libdw::libdw SYSTEM INTERFACE ${libdw_INCLUDE_DIR})
+    endif()
+endif()
+
+mark_as_advanced(libdw_INCLUDE_DIR libdw_LIBRARY)
@@ -0,0 +1,80 @@
+# Try to find libelf headers and libraries.
+#
+# Usage of this module as follows:
+#
+# find_package(libelf)
+#
+# Variables used by this module, they can change the default behaviour and need
+# to be set before calling find_package:
+#
+# libelf_ROOT         Set this variable to the root installation of
+#                     libelf if the module has problems finding the
+#                     proper installation path.
+#
+# Variables defined by this module:
+#
+# libelf_FOUND              System has libelf libraries and headers
+# libelf_LIBRARIES          The libelf library
+# libelf_INCLUDE_DIRS       The location of libelf headers
+#
+# Interface targets defined by this module:
+#
+# libelf::libelf
+#
+
+find_package(PkgConfig)
+
+if(PkgConfig_FOUND)
+    pkg_check_modules(ELF libelf)
+
+    if(ELF_FOUND)
+        set(libelf_INCLUDE_DIR
+            "${ELF_INCLUDE_DIRS}"
+            CACHE FILEPATH "libelf include directory")
+        set(libelf_LIBRARY
+            "${ELF_LIBRARIES}"
+            CACHE FILEPATH "libelf libraries")
+    endif()
+endif()
+
+if(NOT PkgConfig_FOUND OR NOT ELF_FOUND)
+    find_path(
+        libelf_ROOT_DIR
+        NAMES include/gelf.h include/elf.h
+        HINTS ${libelf_ROOT}
+        PATHS ${libelf_ROOT})
+
+    mark_as_advanced(libelf_ROOT_DIR)
+
+    find_path(
+        libelf_INCLUDE_DIR
+        NAMES gelf.h elf.h
+        HINTS ${libelf_ROOT}
+        PATHS ${libelf_ROOT}
+        PATH_SUFFIXES include)
+
+    find_library(
+        libelf_LIBRARY
+        NAMES elf
+        HINTS ${libelf_ROOT}
+        PATHS ${libelf_ROOT}
+        PATH_SUFFIXES lib lib64)
+endif()
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(libelf DEFAULT_MSG libelf_LIBRARY libelf_INCLUDE_DIR)
+
+if(libelf_FOUND)
+    if(NOT TARGET libelf::libelf)
+        add_library(libelf::libelf INTERFACE IMPORTED)
+    endif()
+
+    if(TARGET PkgConfig::ELF AND ELF_FOUND)
+        target_link_libraries(libelf::libelf INTERFACE PkgConfig::ELF)
+    else()
+        target_link_libraries(libelf::libelf INTERFACE ${libelf_LIBRARY})
+        target_include_directories(libelf::libelf SYSTEM INTERFACE ${libelf_INCLUDE_DIR})
+    endif()
+endif()
+
+mark_as_advanced(libelf_INCLUDE_DIR libelf_LIBRARY)