compiler.c

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#include <stdlib.h>
#include <stdio.h>
#include <string.h>
 
#ifndef ROOTSIM_OPTIMIZATION_OPTIONS
 
#define ROOTSIM_OPTIMIZATION_OPTIONS ""
#endif
 
#ifndef ROOTSIM_CC
 
#define ROOTSIM_CC ""
#endif
 
#ifndef ROOTSIM_LIB_DIR
 
#define ROOTSIM_LIB_DIR ""
#endif
 
#ifndef ROOTSIM_INC_DIR
 
#define ROOTSIM_INC_DIR ""
#endif
 
static const char cmd_line_prefix[] =
        ROOTSIM_CC " "
        ROOTSIM_OPTIMIZATION_OPTIONS " "
        "-I" ROOTSIM_INC_DIR " "
        "-Xclang -load "
        "-Xclang " ROOTSIM_LIB_DIR "librootsim-llvm.so"
;
static const char cmd_line_suffix[] =
        " -Wl,--as-needed "
        ROOTSIM_LIB_DIR "librootsim.a "
        ROOTSIM_LIB_DIR "librootsim-mods.a "
        "-lm "
        "-lpthread"
;
 
int main(int argc, char **argv)
{
        (void) argc;
        ++argv;
        size_t tot_size = sizeof(cmd_line_prefix) + sizeof(cmd_line_suffix) - 1;
        char **argv_tmp = argv;
        while (*argv_tmp) {
                tot_size += strlen(*argv_tmp) + 1;
                ++argv_tmp;
        }
 
        char *cmd_line = malloc(tot_size);
        if (cmd_line == NULL) {
                fprintf(stderr, "Unable to allocate memory!");
                return -1;
        }
 
        char *ptr = cmd_line;
        memcpy(ptr, cmd_line_prefix, sizeof(cmd_line_prefix) - 1);
        ptr += sizeof(cmd_line_prefix) - 1;
 
        while (*argv) {
                *ptr = ' ';
                ++ptr;
 
                size_t l = strlen(*argv);
                memcpy(ptr, *argv, l);
                ptr += l;
 
                ++argv;
        }
 
        memcpy(ptr, cmd_line_suffix, sizeof(cmd_line_suffix));
 
        if (system(cmd_line)) {
                free(cmd_line);
                fprintf(stderr, "Unable to run " ROOTSIM_CC "\n");
                return -1;
        }
        free(cmd_line);
        return 0;
}