Refactor to use a program name pointer instead of PACKAGE macro

During SEGV handling under pcp-htop several incorrect strings were
observed - in particular reporting htop as the binary name instead
of pcp-htop. This is something we want to be crystal clear on when
we request user stack traces etc, so make sure this cannot be done
incorrectly.

CRT.c

@@ -19,6 +19,7 @@ in the source distribution for its full text.
 #include <string.h>
 #include <unistd.h>
 
+#include "CommandLine.h"
 #include "ProvideCurses.h"
 #include "XUtils.h"
 
@@ -1153,10 +1154,11 @@ void CRT_handleSIGSEGV(int signal) {
       "============================\n"
       "Please check at https://htop.dev/issues whether this issue has already been reported.\n"
       "If no similar issue has been reported before, please create a new issue with the following information:\n"
-      "  - Your "PACKAGE" version: '"VERSION"'\n"
+      "  - Your %s version: '"VERSION"'\n"
       "  - Your OS and kernel version (uname -a)\n"
       "  - Your distribution and release (lsb_release -a)\n"
-      "  - Likely steps to reproduce (How did it happen?)\n"
+      "  - Likely steps to reproduce (How did it happen?)\n",
+      program
    );
 
 #ifdef PRINT_BACKTRACE
@@ -1196,15 +1198,16 @@ void CRT_handleSIGSEGV(int signal) {
    fprintf(stderr,
       "\n"
       "To make the above information more practical to work with, "
-      "please also provide a disassembly of your "PACKAGE" binary. "
+      "please also provide a disassembly of your %s binary. "
       "This can usually be done by running the following command:\n"
-      "\n"
+      "\n",
+      program
    );
 
 #ifdef HTOP_DARWIN
-   fprintf(stderr, "   otool -tvV `which "PACKAGE"` > ~/htop.otool\n");
+   fprintf(stderr, "   otool -tvV `which %s` > ~/%s.otool\n", program, program);
 #else
-   fprintf(stderr, "   objdump -d -S -w `which "PACKAGE"` > ~/htop.objdump\n");
+   fprintf(stderr, "   objdump -d -S -w `which %s` > ~/%s.objdump\n", program, program);
 #endif
 
    fprintf(stderr,
@@ -1216,8 +1219,9 @@ void CRT_handleSIGSEGV(int signal) {
    fprintf(stderr,
       "Running this program with debug symbols or inside a debugger may provide further insights.\n"
       "\n"
-      "Thank you for helping to improve "PACKAGE"!\n"
-      "\n"
+      "Thank you for helping to improve %s!\n"
+      "\n",
+      program
    );
 
    /* Call old sigsegv handler; may be default exit or third party one (e.g. ASAN) */

CommandLine.c

@@ -89,7 +89,7 @@ typedef struct CommandLineSettings_ {
    bool readonly;
 } CommandLineSettings;
 
-static CommandLineStatus parseArguments(const char* program, int argc, char** argv, CommandLineSettings* flags) {
+static CommandLineStatus parseArguments(int argc, char** argv, CommandLineSettings* flags) {
 
    *flags = (CommandLineSettings) {
       .pidMatchList = NULL,
@@ -298,7 +298,7 @@ static void setCommFilter(State* state, char** commFilter) {
    *commFilter = NULL;
 }
 
-int CommandLine_run(const char* name, int argc, char** argv) {
+int CommandLine_run(int argc, char** argv) {
 
    /* initialize locale */
    const char* lc_ctype;
@@ -310,7 +310,7 @@ int CommandLine_run(const char* name, int argc, char** argv) {
    CommandLineStatus status = STATUS_OK;
    CommandLineSettings flags = { 0 };
 
-   if ((status = parseArguments(name, argc, argv, &flags)) != STATUS_OK)
+   if ((status = parseArguments(argc, argv, &flags)) != STATUS_OK)
       return status != STATUS_OK_EXIT ? 1 : 0;
 
    if (flags.readonly)

CommandLine.h

@@ -14,6 +14,8 @@ typedef enum {
    STATUS_OK_EXIT
 } CommandLineStatus;
 
-int CommandLine_run(const char* name, int argc, char** argv);
+extern const char* program;
+
+int CommandLine_run(int argc, char** argv);
 
 #endif

htop.c

@@ -11,6 +11,8 @@ in the source distribution for its full text.
 #include "CommandLine.h"
 
 
+const char* program = PACKAGE;
+
 int main(int argc, char** argv) {
-   return CommandLine_run(PACKAGE, argc, argv);
+   return CommandLine_run(argc, argv);
 }

pcp-htop.c

@@ -14,13 +14,14 @@ in the source distribution for its full text.
 #include "Platform.h"
 
 
+const char* program = "pcp-htop";
+
 int main(int argc, char** argv) {
-   const char* name = "pcp-htop";
-   pmSetProgname(name);
+   pmSetProgname(program);
 
    /* extract environment variables */
    opts.flags |= PM_OPTFLAG_ENV_ONLY;
    (void)pmGetOptions(argc, argv, &opts);
 
-   return CommandLine_run(name, argc, argv);
+   return CommandLine_run(argc, argv);
 }