remove cmake option enable-tests

Always build unit tests instead and use cmakes OBJECT library to bypass visibility control and the value of BUILD_SHARED_LIBS.

.appveyor-vcpkg.yml

@@ -57,8 +57,7 @@ build_script:
   - cd build
   - cmake -G "%generator%" %CMAKE_FLAGS% -Denable-pkgconfig=0 -DCMAKE_TOOLCHAIN_FILE=c:/Tools/vcpkg/scripts/buildsystems/vcpkg.cmake ..
   - cmake --build . --config Release # build libfluidsynth and fluidsynth exec
-  - cmake -Denable-tests=1 ..
-  - cmake --build . --config Release --target check # build unittests
+  - cmake --build . --config Release --target check # build and exec unittests
 
 after_build:
   - 7z a fluidsynth-vcpkg-%platform%.zip %APPVEYOR_BUILD_FOLDER%\build\src\Release\*

.appveyor.yml

@@ -72,10 +72,8 @@ build_script:
   - mkdir build
   - cd build
   - cmake -G "%generator%" ..
-  - cmake --build . --config Release # build libfluidsynth and fluidsynth exec
-# FIXME the linker doesnt find gthread-2.0.lib in the second run, why???
-#  - cmake -Denable-tests=1 ..
-#  - cmake --build . --config Release --target check # build unittests
+  - cmake --build . --config Release
+  - cmake --build . --config Release --target check # build and exec unittests
 
 after_build:
   - 7z a fluidsynth-%platform%.zip %APPVEYOR_BUILD_FOLDER%\build\src\Release\* c:\deps\bin\libglib*.dll c:\deps\bin\libgthread*.dll c:\deps\bin\*intl*.dll

.travis.yml

@@ -220,6 +220,7 @@ before_script:
     - mkdir build && cd build
     
 script:
-    - cmake -DCMAKE_INSTALL_PREFIX=$HOME/fluidsynth_install ${CMAKE_FLAGS} "-Denable-portaudio=1" "-Denable-ladspa=1" "-DCMAKE_BUILD_TYPE=RelWithDebInfo" ..
+    - cmake -DCMAKE_INSTALL_PREFIX=$HOME/fluidsynth_install ${CMAKE_FLAGS} "-Denable-portaudio=1" "-Denable-ladspa=1" "-DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_VERBOSE_MAKEFILE=1" ..
     - make -j4
-    - if [ $TRAVIS_OS_NAME = linux ]; then make install; cmake -Denable-tests=1 ..; make check; fi # install only on linux, as CMAKE_INSTALL_PREFIX is ignored for frameworks on macosx and I cant tell whether that's correct or a bug. also build unit test only on linux, as libintl is not found on macosx
+    - make check
+    - if [ $TRAVIS_OS_NAME = linux ]; then make install; fi # install only on linux, as CMAKE_INSTALL_PREFIX is ignored for frameworks on macosx and I cant tell whether that's correct or a bug.

CMakeLists.txt

@@ -55,7 +55,6 @@ option ( enable-fpe-check "enable Floating Point Exception checks and debug mess
 option ( enable-portaudio "compile PortAudio support" off )
 option ( enable-profiling "profile the dsp code" off )
 option ( enable-trap-on-fpe "enable SIGFPE trap on Floating Point Exceptions" off )
-option ( enable-tests "build unit tests (implicitly disables BUILD_SHARED_LIBS)" off )
 
 # Options enabled by default
 option ( enable-aufile "compile support for sound file output" on )
@@ -107,6 +106,11 @@ mark_as_advanced ( LIB_SUFFIX )
 # the default C standard to use for all targets
 set(CMAKE_C_STANDARD 90)
 
+# Compile with position independent code if the user requested a shared lib, i.e. no PIC if static requested.
+# This is cmakes default behavior, but here it's explicitly required due to the use of libfluidsynth-OBJ as object library,
+# which would otherwise always be compiled without PIC.
+set ( CMAKE_POSITION_INDEPENDENT_CODE ${BUILD_SHARED_LIBS} )
+
 # the default global visibility level for all target
 # no visibility support on OS2
 if ( NOT OS2 )
@@ -543,19 +547,11 @@ if ( OpenMP_FOUND OR OpenMP_C_FOUND )
     endif()
 endif()
 
-
-if(enable-tests)
 # manipulate some variables to setup a proper test env
 set(TEST_SOUNDFONT "${CMAKE_SOURCE_DIR}/sf2/VintageDreamsWaves-v2.sf2")
 set(TEST_SOUNDFONT_SF3 "${CMAKE_SOURCE_DIR}/sf2/VintageDreamsWaves-v2.sf3")
 
-    # force to build a static lib, in order to bypass the visibility control, allowing us
-    # to test fluidsynths private/internal functions
-    set(BUILD_SHARED_LIBS OFF)
-    
 add_subdirectory ( test )
-endif(enable-tests)
-
 
 # General configuration file
 configure_file ( ${CMAKE_SOURCE_DIR}/src/config.cmake

cmake_admin/FluidUnitTest.cmake

@@ -1,5 +1,5 @@
 macro ( ADD_FLUID_TEST _test )
-    ADD_EXECUTABLE(${_test} ${_test}.c)
+    ADD_EXECUTABLE(${_test} ${_test}.c $<TARGET_OBJECTS:libfluidsynth-OBJ> )
     TARGET_LINK_LIBRARIES(${_test} libfluidsynth)
 
     # use the local include path to look for fluidsynth.h, as we cannot be sure fluidsynth is already installed

src/CMakeLists.txt

@@ -247,10 +247,7 @@ link_directories (
     ${DBUS_LIBRARY_DIRS}
 )
 
-
-# note: by default this target creates a shared object (or dll). To build a
-# static library instead, set the option BUILD_SHARED_LIBS to FALSE.
-add_library ( libfluidsynth
+add_library ( libfluidsynth-OBJ OBJECT
     ${config_SOURCES}
     ${fluid_alsa_SOURCES}
     ${fluid_coreaudio_SOURCES}
@@ -270,6 +267,10 @@ add_library ( libfluidsynth
     ${VersionFilesOutputVariable}
 )
 
+# note: by default this target creates a shared object (or dll). To build a
+# static library instead, set the option BUILD_SHARED_LIBS to FALSE.
+add_library ( libfluidsynth $<TARGET_OBJECTS:libfluidsynth-OBJ> )
+
 if ( MACOSX_FRAMEWORK )
      set_property ( SOURCE ${public_HEADERS}
          PROPERTY MACOSX_PACKAGE_LOCATION Headers/fluidsynth

test/README.md

@@ -16,6 +16,5 @@ To add a unit test just duplicate an existing one, give it a unique name and upd
 * adding a call to `ADD_FLUID_TEST()` and
 * a dependency to the custom `check` target.
 
-Make sure you call cmake with `-Denable-tests=1` to build and execute the tests via `make check`. Unit
-tests should use the `VintageDreamsWaves-v2.sf2` as test soundfont. Use the `TEST_SOUNDFONT` macro to
-access it.
+Execute the tests via `make check`. Unit tests should use the `VintageDreamsWaves-v2.sf2` as test soundfont.
+Use the `TEST_SOUNDFONT` macro to access it.