Fix error of can't find res path

.gitignore

@@ -46,3 +46,4 @@ libsigrok4DSL/version.h
 
 DSView-prj
 build*
+share

DSView/CMakeLists.txt

@@ -390,7 +390,7 @@ if(ENABLE_COTIRE)
 	include(cotire)
 	cotire(${PROJECT_NAME})
 endif()
-set_target_properties(${PROJECT_NAME} PROPERTIES INSTALL_RPATH "/usr/local/lib")
+set_target_properties(${PROJECT_NAME} PROPERTIES INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib")
 
 #===============================================================================
 #= Installation

DSView/main.cpp

@@ -42,6 +42,8 @@
 
 #include "config.h"
 
+char DS_RES_PATH[256];
+
 void usage()
 {
 	fprintf(stdout,
@@ -113,6 +115,20 @@ int main(int argc, char *argv[])
 	} else if (argc - optind == 1)
 		open_file = argv[argc - 1];
 
+    // Initialise DS_RES_PATH
+    QDir dir(QCoreApplication::applicationDirPath());
+    if (dir.cd("..") &&
+        dir.cd("share") &&
+        dir.cd(QApplication::applicationName()) &&
+        dir.cd("res")) {
+        QString res_dir = dir.absolutePath() + "/";
+        QByteArray str_tmp = res_dir.toLocal8Bit();
+        strcpy(DS_RES_PATH, str_tmp.data());
+    } else {
+        qDebug() << "ERROR: config files don't exist.";
+        return 1;
+    }
+
 	// Initialise libsigrok
 	if (sr_init(&sr_ctx) != SR_OK) {
 		qDebug() << "ERROR: libsigrok init failed.";

libsigrok4DSL/libsigrok.h

@@ -114,7 +114,7 @@ enum {
 
 #define DS_MAX_TRIG_PERCENT 90
 
-#define DS_RES_PATH "/usr/local/share/DSView/res/"
+extern char DS_RES_PATH[256];
 
 /** libsigrok loglevels. */
 enum {