Working CMakeLists file to build RooFit programs. Simple example in main.cpp

.gitignore

+*.pdf
+*.cbp
+
+cmake-build-debug/*
+CMakeFiles/*
+CMakeCache.txt
+cmake_install.cmake
+Makefile
+
+roofit_test
+
+.idea/*
\ No newline at end of file

CMakeLists.txt

+cmake_minimum_required(VERSION 3.7)
+project(roofit_test)
+
+set(CMAKE_CXX_STANDARD 14)
+
+find_package(ROOT REQUIRED)
+
+include_directories(${ROOT_INCLUDE_DIRS})
+add_executable(roofit_test main.cpp)
+target_link_libraries(roofit_test ${ROOT_LIBRARIES} RooFit)
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main.cpp

+#include <iostream>
+
+#include "TCanvas.h"
+
+#include "RooRealVar.h"
+#include "RooGaussian.h"
+#include "RooDataSet.h"
+#include "RooPlot.h"
+
+using namespace RooFit;
+
+int main() {
+
+    RooRealVar mass("mass", "D^0 mass [MeV]", 1790, 1920);
+    RooRealVar mean("mean", "mean of D^0 mass", 1864.4, 1839.5, 1889.5);
+    RooRealVar sigma("sigma", "D^0 mass width [MeV]", 7.08, 0., 20);
+
+    RooGaussian signal("signal", "mass distribution", mass, mean, sigma);
+    RooDataSet *data = signal.generate(mass, 5000);
+    signal.fitTo(*data);
+    RooPlot *xframe0 = mass.frame();
+    data->plotOn(xframe0);
+    signal.plotOn(xframe0);
+
+    TCanvas c;
+    xframe0->Draw();
+    c.SaveAs("roofittest.pdf", "pdf");
+    delete data;
+    delete xframe0;
+    return 0;
+}
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