72 lines
1.6 KiB
CMake
72 lines
1.6 KiB
CMake
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function(make_path_run_wrapper cmd target)
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get_filename_component(cmd_resolved "${cmd}" REALPATH)
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get_filename_component(base_name "${cmd_resolved}" NAME)
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get_filename_component(dir_name "${cmd_resolved}" DIRECTORY)
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set(source "${target}.c")
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file(WRITE "${source}"
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"
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#define BUF_SZ 4096
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#ifdef _WIN32
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#include <process.h>
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#define PATH_SEP ';'
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#define setenv(var, val, dummy) _putenv_s(var, val)
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#define execvp my_execvp
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#else
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#include <unistd.h>
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#define PATH_SEP ':'
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#endif
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char* dir_name = \"${dir_name}\";
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char* base_name = \"${base_name}\";
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int main(int argc, char** argv) {
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size_t dir_len = strlen(dir_name);
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char* path = getenv(\"PATH\");
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size_t path_len = strlen(path);
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char* new_path = malloc(dir_len + path_len + 2);
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char** new_argv = malloc(sizeof(char*) * argc);
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char** p;
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char buf[BUF_SZ];
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strcpy(new_path, dir_name);
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new_path[dir_len] = PATH_SEP;
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strcpy(new_path + dir_len + 1, path);
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setenv(\"PATH\", new_path, 1);
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free(new_path);
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p = new_argv;
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*(p++) = base_name;
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while (*(++argv)) *(p++) = *argv;
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*p = NULL;
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execvp(base_name, new_argv);
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// this is only reached if exec failed
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snprintf(buf, BUF_SZ, \"%s: exec failed\", argv[0]);
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perror(buf);
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return EXIT_FAILURE;
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}
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#ifdef _WIN32
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int my_execvp(char* cmd, char** argv) {
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int ret = _spawnvp(_P_WAIT, cmd, argv);
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if (ret == -1) return ret;
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exit(ret);
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}
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#endif
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")
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include(HostCompile)
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host_compile("${source}" "${target}")
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endfunction()
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