From fc390b32247e954cedcb6ff1fac580e768016014 Mon Sep 17 00:00:00 2001
From: Steve Markgraf <steve@steve-m.de>
Date: Tue, 17 Jul 2012 20:41:27 +0200
Subject: [PATCH] build rtl_fm

Signed-off-by: Steve Markgraf <steve@steve-m.de>
---
 configure.ac       |  3 +++
 src/CMakeLists.txt | 12 ++++++++++++
 src/Makefile.am    |  5 ++++-
 3 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index c879f4d..7bc8e1d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -36,6 +36,9 @@ dnl checks for required libraries
 dnl pthreads
 AC_CHECK_LIB(pthread, pthread_create, [LIBS="$LIBS -lpthread"])
 
+dnl libmath (for rtl_fm)
+AC_CHECK_LIB(m, atan2, [LIBS="$LIBS -lm"])
+
 # The following test is taken from WebKit's webkit.m4
 saved_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -fvisibility=hidden "
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index de4a26f..550fa8e 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -36,6 +36,10 @@ set_target_properties(rtlsdr_shared PROPERTIES DEFINE_SYMBOL "rtlsdr_EXPORTS")
 set_target_properties(rtlsdr_shared PROPERTIES OUTPUT_NAME rtlsdr)
 set_target_properties(rtlsdr_shared PROPERTIES SOVERSION 0 VERSION 0.0.0)
 
+if(UNIX)
+    link_libraries(m)
+endif(UNIX)
+
 add_library(rtlsdr_static STATIC
     librtlsdr.c
     tuner_e4k.c
@@ -67,6 +71,8 @@ endif()
 add_executable(rtl_sdr rtl_sdr.c)
 add_executable(rtl_tcp rtl_tcp.c)
 add_executable(rtl_test rtl_test.c)
+add_executable(rtl_fm rtl_fm.c)
+
 target_link_libraries(rtl_sdr rtlsdr_shared
     ${LIBUSB_LIBRARIES}
     ${CMAKE_THREAD_LIBS_INIT}
@@ -79,14 +85,20 @@ target_link_libraries(rtl_test rtlsdr_shared
     ${LIBUSB_LIBRARIES}
     ${CMAKE_THREAD_LIBS_INIT}
 )
+target_link_libraries(rtl_fm rtlsdr_shared
+    ${LIBUSB_LIBRARIES}
+    ${CMAKE_THREAD_LIBS_INIT}
+)
 
 if(WIN32)
 target_link_libraries(rtl_sdr libgetopt_static)
 target_link_libraries(rtl_tcp libgetopt_static)
 target_link_libraries(rtl_test libgetopt_static)
+target_link_libraries(rtl_fm libgetopt_static)
 set_property(TARGET rtl_sdr APPEND PROPERTY COMPILE_DEFINITIONS "rtlsdr_STATIC" )
 set_property(TARGET rtl_tcp APPEND PROPERTY COMPILE_DEFINITIONS "rtlsdr_STATIC" )
 set_property(TARGET rtl_test APPEND PROPERTY COMPILE_DEFINITIONS "rtlsdr_STATIC" )
+set_property(TARGET rtl_fm APPEND PROPERTY COMPILE_DEFINITIONS "rtlsdr_STATIC" )
 endif()
 ########################################################################
 # Install built library files & utilities
diff --git a/src/Makefile.am b/src/Makefile.am
index c1c4fe8..6693e9c 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -10,7 +10,7 @@ lib_LTLIBRARIES = librtlsdr.la
 librtlsdr_la_SOURCES = librtlsdr.c tuner_e4k.c tuner_fc0012.c tuner_fc0013.c tuner_fc2580.c
 librtlsdr_la_LDFLAGS = -version-info $(LIBVERSION)
 
-bin_PROGRAMS         = rtl_sdr rtl_tcp rtl_test
+bin_PROGRAMS         = rtl_sdr rtl_tcp rtl_test rtl_fm
 
 rtl_sdr_SOURCES      = rtl_sdr.c
 rtl_sdr_LDADD        = librtlsdr.la
@@ -20,3 +20,6 @@ rtl_tcp_LDADD        = librtlsdr.la
 
 rtl_test_SOURCES      = rtl_test.c
 rtl_test_LDADD        = librtlsdr.la
+
+rtl_fm_SOURCES      = rtl_fm.c
+rtl_fm_LDADD        = librtlsdr.la $(LIBM)