From 3b980fd5eeadd638874dfe03801c4c15926882c6 Mon Sep 17 00:00:00 2001
From: Alexey Sheplyakov <asheplyakov@altlinux.org>
Date: Mon, 6 Jan 2020 22:34:09 +0400
Subject: [PATCH] Build example programs to avoid breaking them on API changes

---
 doc/examples/CMakeLists.txt | 22 ++++++++++++++++++++++
 doc/examples/Makefile.am    | 27 +++++++++++++++++++++++++++
 doc/examples/archive1.cpp   |  6 +++++-
 doc/examples/compile1.cpp   |  5 ++++-
 doc/examples/compile2.cpp   |  4 ++++
 doc/examples/compile3.cpp   |  5 ++++-
 doc/examples/derivative.cpp |  4 ++++
 doc/examples/mystring.cpp   |  6 ++++--
 8 files changed, 74 insertions(+), 5 deletions(-)

diff --git a/doc/examples/CMakeLists.txt b/doc/examples/CMakeLists.txt
index 851c61ce..afdc67d2 100644
--- a/doc/examples/CMakeLists.txt
+++ b/doc/examples/CMakeLists.txt
@@ -1 +1,23 @@
 add_info_file(ginac-examples)
+
+add_definitions(-DIN_GINAC)
+include_directories(${CMAKE_SOURCE_DIR}/ginac ${CMAKE_BUILD_DIR}/ginac)
+
+add_executable(archive1 archive1.cpp)
+target_link_libraries(archive1 ginac ${LIBDL_LIBRARIES})
+
+add_executable(compile1 compile1.cpp)
+target_link_libraries(compile1 ginac ${LIBDL_LIBRARIES})
+
+# XXX: compile2 example uses the Cuba library (http://www.feynarts.de/cuba)
+# add_executable(compile2 compile2.cpp)
+# target_link_libraries(compile2 ginac ${LIBDL_LIBRARIES})
+
+add_executable(compile3 compile3.cpp)
+target_link_libraries(compile3 ginac ${LIBDL_LIBRARIES})
+
+add_executable(mystring mystring.cpp)
+target_link_libraries(mystring ginac ${LIBDL_LIBRARIES})
+
+add_executable(derivative derivative.cpp)
+target_link_libraries(derivative ginac ${LIBDL_LIBRARIES})
diff --git a/doc/examples/Makefile.am b/doc/examples/Makefile.am
index 472a2a16..9c66c731 100644
--- a/doc/examples/Makefile.am
+++ b/doc/examples/Makefile.am
@@ -17,3 +17,30 @@ all: $(EXFILES)
 CLEANFILES = $(TXT) $(HTML)
 
 EXTRA_DIST = $(EXFILES) CMakeLists.txt
+
+AM_CPPFLAGS = -I$(srcdir)/../../ginac -I../../ginac -DIN_GINAC
+
+noinst_PROGRAMS = archive1 \
+		  compile1 \
+		  compile3 \
+		  mystring \
+		  derivative
+
+archive1_SOURCES = archive1.cpp
+archive1_LDADD = ../../ginac/libginac.la
+
+compile1_SOURCES = compile1.cpp
+compile1_LDADD = ../../ginac/libginac.la
+
+# compile2 example uses the Cuba library: (http://www.feynarts.de)
+# compile2_SOURCES = compile2.cpp
+# compile2_LDADD = ../../ginac/libginac.la
+
+compile3_SOURCES = compile3.cpp
+compile3_LDADD = ../../ginac/libginac.la
+
+mystring_SOURCES = mystring.cpp
+mystring_LDADD = ../../ginac/libginac.la
+
+derivative_SOURCES = derivative.cpp
+derivative_LDADD = ../../ginac/libginac.la
diff --git a/doc/examples/archive1.cpp b/doc/examples/archive1.cpp
index cf55ee5a..611a15dc 100644
--- a/doc/examples/archive1.cpp
+++ b/doc/examples/archive1.cpp
@@ -3,8 +3,12 @@
  */
 
 #include <fstream>
-#include <ginac/ginac.h>
 
+#ifdef IN_GINAC
+#include "ginac.h"
+#else
+#include <ginac/ginac.h>
+#endif
 using namespace std;
 using namespace GiNaC;
 
diff --git a/doc/examples/compile1.cpp b/doc/examples/compile1.cpp
index b92dc766..69827251 100644
--- a/doc/examples/compile1.cpp
+++ b/doc/examples/compile1.cpp
@@ -1,7 +1,10 @@
 #include <ctime>
 #include <iostream>
+#ifdef IN_GINAC
+#include "ginac.h"
+#else
 #include <ginac/ginac.h>
-
+#endif
 using namespace std;
 using namespace GiNaC;
 
diff --git a/doc/examples/compile2.cpp b/doc/examples/compile2.cpp
index 960bbed9..0854e722 100644
--- a/doc/examples/compile2.cpp
+++ b/doc/examples/compile2.cpp
@@ -1,5 +1,9 @@
 #include <iostream>
+#ifdef IN_GINAC
+#include "ginac.h"
+#else
 #include <ginac/ginac.h>
+#endif
 // Yes, we are using CUBA (should be installed on the system!)
 #include <cuba.h>
 
diff --git a/doc/examples/compile3.cpp b/doc/examples/compile3.cpp
index b92df53f..c0e5209f 100644
--- a/doc/examples/compile3.cpp
+++ b/doc/examples/compile3.cpp
@@ -1,7 +1,10 @@
 #include <ctime>
 #include <iostream>
+#ifdef IN_GINAC
+#include "ginac.h"
+#else
 #include <ginac/ginac.h>
-
+#endif
 using namespace std;
 using namespace GiNaC;
 
diff --git a/doc/examples/derivative.cpp b/doc/examples/derivative.cpp
index c1a09b99..3b845c05 100644
--- a/doc/examples/derivative.cpp
+++ b/doc/examples/derivative.cpp
@@ -5,7 +5,11 @@
 #include <iostream>
 #include <string>
 #include <stdexcept>
+#ifdef IN_GINAC
+#include "ginac.h"
+#else
 #include <ginac/ginac.h>
+#endif
 using namespace std;
 using namespace GiNaC;
 
diff --git a/doc/examples/mystring.cpp b/doc/examples/mystring.cpp
index 640f81eb..655fe825 100644
--- a/doc/examples/mystring.cpp
+++ b/doc/examples/mystring.cpp
@@ -4,9 +4,11 @@
 #include <iostream>
 #include <string>   
 #include <stdexcept>
-
+#ifdef IN_GINAC
+#include "ginac.h"
+#else
 #include <ginac/ginac.h>
-
+#endif
 using namespace std;
 using namespace GiNaC;
 
-- 
2.44.0