+ } else if (option[0] == 'b') {
+ const char *opt;
+ GET_ARG_AFTER(opt, "-b");
+ int res = firm_be_option(opt);
+ if (res == 0) {
+ fprintf(stderr, "error: unknown Firm backend option '-b %s'\n",
+ opt);
+ argument_errors = true;
+ } else if (res == -1) {
+ help_displayed = true;
+ } else if (strstart(opt, "isa=")) {
+ strncpy(cpu_arch, opt, sizeof(cpu_arch));
+ }
+ } else if (option[0] == 'W') {
+ if (strstart(option + 1, "l,")) // a gcc-style linker option
+ {
+ const char *opt;
+ GET_ARG_AFTER(opt, "-Wl,");
+ add_flag(&ldflags_obst, "-Wl,%s", opt);
+ }
+ else set_warning_opt(&option[1]);
+ } else if(option[0] == 'm') {
+ /* -m options */
+ const char *opt;
+ char arch_opt[64];
+
+ GET_ARG_AFTER(opt, "-m");
+ if (strstart(opt, "arch=")) {
+ GET_ARG_AFTER(opt, "-march=");
+ snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
+ int res = firm_be_option(arch_opt);
+ if (res == 0)
+ argument_errors = true;
+ else {
+ snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
+ int res = firm_be_option(arch_opt);
+ if (res == 0)
+ argument_errors = true;
+ }
+ } else if (strstart(opt, "tune=")) {
+ GET_ARG_AFTER(opt, "-mtune=");
+ snprintf(arch_opt, sizeof(arch_opt), "%s-opt=%s", cpu_arch, opt);
+ int res = firm_be_option(arch_opt);
+ if (res == 0)
+ argument_errors = true;
+ } else if (strstart(opt, "cpu=")) {
+ GET_ARG_AFTER(opt, "-mcpu=");
+ snprintf(arch_opt, sizeof(arch_opt), "%s-arch=%s", cpu_arch, opt);
+ int res = firm_be_option(arch_opt);
+ if (res == 0)
+ argument_errors = true;
+ } else if (strstart(opt, "fpmath=")) {
+ GET_ARG_AFTER(opt, "-mfpmath=");
+ if (streq(opt, "387"))
+ opt = "x87";
+ else if (streq(opt, "sse"))
+ opt = "sse2";
+ else {
+ fprintf(stderr, "error: option -mfpumath supports only 387 or sse\n");
+ argument_errors = true;
+ }
+ if(!argument_errors) {
+ snprintf(arch_opt, sizeof(arch_opt), "%s-fpunit=%s", cpu_arch, opt);
+ int res = firm_be_option(arch_opt);
+ if (res == 0)
+ argument_errors = true;
+ }
+ } else if (strstart(opt, "preferred-stack-boundary=")) {
+ GET_ARG_AFTER(opt, "-mpreferred-stack-boundary=");
+ snprintf(arch_opt, sizeof(arch_opt), "%s-stackalign=%s", cpu_arch, opt);
+ int res = firm_be_option(arch_opt);
+ if (res == 0)
+ argument_errors = true;
+ } else if (streq(opt, "omit-leaf-frame-pointer")) {
+ set_be_option("omitleaffp=1");
+ } else if (streq(opt, "no-omit-leaf-frame-pointer")) {
+ set_be_option("omitleaffp=0");
+ } else {
+ char *endptr;
+ long int value = strtol(opt, &endptr, 10);
+ if (*endptr != '\0') {
+ fprintf(stderr, "error: wrong option '-m %s'\n", opt);
+ argument_errors = true;
+ }
+ if (value != 16 && value != 32 && value != 64) {
+ fprintf(stderr, "error: option -m supports only 16, 32 or 64\n");
+ argument_errors = true;
+ } else {
+ machine_size = (unsigned int)value;
+ }
+ }
+ } else if (streq(option, "pg")) {
+ set_be_option("gprof");
+ add_flag(&ldflags_obst, "-pg");
+ } else if (streq(option, "pedantic") ||
+ streq(option, "ansi")) {