pmt: Improvement.

- At build time, the version, compile time, CMake version, compiler version, and compiler flags are retrieved with the new CMake module and a header is created. This header provides more robust version management and notifications.
- Build warnings fixed, code corrected for compilation.
- Improvements were made to CMake code.
- Modifications were made to the tests to read the library's version information.

srclib/libhelper/src/Checkers.cpp

@@ -74,8 +74,8 @@ bool isHardLink(const std::string_view entry)
 
 bool areLinked(const std::string_view entry1, const std::string_view entry2)
 {
-	const std::string_view st1 = (isSymbolicLink(entry1)) ? readSymlink(entry1) : entry1;
-	const std::string_view st2 = (isSymbolicLink(entry2)) ? readSymlink(entry2) : entry2;
+	const std::string st1 = (isSymbolicLink(entry1)) ? readSymlink(entry1) : std::string(entry1.data());
+	const std::string st2 = (isSymbolicLink(entry2)) ? readSymlink(entry2) : std::string(entry2.data());
 
 	return (st1 == st2);
 }

srclib/libhelper/src/FileUtil.cpp

@@ -223,13 +223,13 @@ bool eraseDirectoryRecursive(const std::string_view directory)
 	return true;
 }
 
-std::string_view readSymlink(const std::string_view entry)
+std::string readSymlink(const std::string_view entry)
 {
 	char target[PATH_MAX];
 	ssize_t len = readlink(entry.data(), target, (sizeof(target) - 1));
 	if (len == -1) {
 		throw Error("Cannot read symlink %s: %s", entry.data(), strerror(errno));
-		return entry;
+		return entry.data();
 	}
 
 	target[len] = '\0';

srclib/libhelper/src/Sha256.cpp

@@ -25,7 +25,7 @@
 
 namespace Helper {
 
-std::optional<std::string_view> sha256Of(const std::string_view path)
+std::optional<std::string> sha256Of(const std::string_view path)
 {
 	if (!fileIsExists(path)) {
 		throw Error("Is not exists or not file: %s", path.data());

srclib/libhelper/src/Utilities.cpp

@@ -24,6 +24,7 @@
 #include <time.h>
 #include <libgen.h>
 #include <libhelper/lib.hpp>
+#include <generated/buildInfo.hpp>
 
 namespace Helper {
 
@@ -130,11 +131,9 @@ std::string pathDirname(const std::string_view entry)
 
 std::string getLibVersion()
 {
-	return std::string(
-		std::to_string(LIBHELPER_MAJOR) + "."
-		+ std::to_string(LIBHELPER_MINOR) + "."
-		+ std::to_string(LIBHELPER_PATCH)
-	);
+	char vinfo[512];
+	sprintf(vinfo, "libhelper %s [%s %s]\nBuildType: %s\nCMakeVersion: %s\nCompilerVersion: %s\nBuildFlags: %s\n", BUILD_VERSION, BUILD_DATE, BUILD_TIME, BUILD_TYPE, BUILD_CMAKE_VERSION, BUILD_COMPILER_VERSION, BUILD_FLAGS);
+	return std::string(vinfo);
 }
 
 } // namespace Helper