kernel-shark: Define a CMAKE_BUILD_TYPE "Package"

A special build type dedicated for package maintainers is added.
By default this build type adds the "-O3" compiler flag. Users
can chose their own compiler flags by providing the corresponding
CMAKE_XXXX_FLAGS_PACKAGE Command-Line options.

If no types is specified, the build type will be "Debug".

Link: http://lore.kernel.org/linux-trace-devel/20190708091945.439-1-y.karadz@gmail.com

Signed-off-by: Yordan Karadzhov <ykaradzhov@vmware.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

2 files changed, 41 insertions, 15 deletions

diff --git a/kernel-shark/CMakeLists.txt b/kernel-shark/CMakeLists.txt
index 64124b0e..a0535d87 100644
--- a/kernel-shark/CMakeLists.txt
+++ b/kernel-shark/CMakeLists.txt
@@ -36,22 +36,38 @@ set(EXECUTABLE_OUTPUT_PATH "${KS_DIR}/bin")
 set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS} -Wall -pthread -fPIC")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -std=c++11 -pthread -fPIC")
 
-if(NOT _INSTALL_PREFIX)
-	set(_INSTALL_PREFIX "/usr/local")
-endif()
+if (NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Debug)
+endif (NOT CMAKE_BUILD_TYPE)
+
+message("\n Build type: ${CMAKE_BUILD_TYPE}")
+
+if (NOT CMAKE_C_FLAGS_PACKAGE)
+    set(CMAKE_C_FLAGS_PACKAGE "-O3")
+endif (NOT CMAKE_C_FLAGS_PACKAGE)
+
+if (NOT CMAKE_CXX_FLAGS_PACKAGE)
+    set(CMAKE_CXX_FLAGS_PACKAGE "-O3")
+endif (NOT CMAKE_CXX_FLAGS_PACKAGE)
+
+if (NOT _INSTALL_PREFIX)
+    set(_INSTALL_PREFIX "/usr/local")
+endif (NOT _INSTALL_PREFIX)
 
 set(KS_PLUGIN_INSTALL_PREFIX ${_INSTALL_PREFIX}/lib/${KS_APP_NAME}/plugins/)
 set(KS_ICON ksharkicon.png)
 
-if (NOT _DEBUG)
+set(CMAKE_INSTALL_RPATH "${_INSTALL_PREFIX}/lib/${KS_APP_NAME}/")
+
+if (CMAKE_BUILD_TYPE MATCHES Package)
+
+    set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
 
-	set(CMAKE_C_FLAGS   "${CMAKE_C_FLAGS} -O2")
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2")
+else (CMAKE_BUILD_TYPE MATCHES Package)
 
-endif (NOT _DEBUG)
+    set(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
 
-SET(CMAKE_INSTALL_RPATH "${_INSTALL_PREFIX}/lib/${KS_APP_NAME}/")
-SET(CMAKE_BUILD_WITH_INSTALL_RPATH FALSE)
+endif (CMAKE_BUILD_TYPE MATCHES Package)
 
 include_directories(${KS_DIR}/src/
                     ${KS_DIR}/build/src/
diff --git a/kernel-shark/README b/kernel-shark/README
index 379c3901..75a0dd08 100644
--- a/kernel-shark/README
+++ b/kernel-shark/README
@@ -38,14 +38,24 @@ the original trace-cmd end traceevent libraries.
 2.1.1 In order to create a Doxygen documentation add -D_DOXYGEN_DOC=1
 as a CMake Command-Line option.
 
-2.1.2 In order to generates complete debug information to be used by GDB add
--D_DEBUG=1 as a CMake Command-Line option.
-
-2.1.3 By default, installation prefix is "/usr/local". It can be changed using
+2.1.2 By default, installation prefix is "/usr/local". It can be changed using
 -D_INSTALL_PREFIX= as a CMake Command-Line option.
 
-Example:
-    cmake -D_DOXYGEN_DOC=1 -D_DEBUG=1 -D_INSTALL_PREFIX=/usr ../
+2.1.3 In addition to the standard CMake build types (Debug, Release,
+RelWithDebInfo, MinSizeRel) KernelShark supports a "Package" build type.
+By default this build type adds the "-O2" compiler flag. Package maintainers
+can chose their own compiler flags by providing the corresponding
+CMAKE_XXXX_FLAGS_PACKAGE Command-Line options (see the example below).
+
+Note that when built as a "Package" the RPATH-s of the executables are
+set directly to _INSTALL_PREFIX/lib/kernelshark/
+
+If no build types is specified, the type will be "Debug".
+
+Examples:
+    cmake -D_DOXYGEN_DOC=1 -D_INSTALL_PREFIX=/usr ../
+
+    cmake -DCMAKE_BUILD_TYPE=Package -DCMAKE_C_FLAGS_PACKAGE="-O3 -pedantic"  ../
 
 2.2.1 Use "make clean" if you want to delete all already compiled objects.