зеркало из https://github.com/github/ruby.git
38 строки
861 B
C
38 строки
861 B
C
#define _POSIX_C_SOURCE 200809L
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#define BUILDDIR "@abs_top_builddir@"
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#define LIBPATHENV "@LIBPATHENV@"
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#define PATH_SEP '@PATH_SEPARATOR@'
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#define STRINGIZE(expr) STRINGIZE0(expr)
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#define STRINGIZE0(expr) #expr
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int
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main(int argc, char **argv)
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{
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static const char builddir[] = BUILDDIR;
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const char *libpath = getenv(LIBPATHENV);
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char c = 0;
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if (libpath) {
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while ((c = *libpath) == PATH_SEP) ++libpath;
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}
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if (c) {
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size_t n = strlen(libpath);
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char *e = malloc(sizeof(builddir)+n+1);
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memcpy(e, builddir, sizeof(builddir)-1);
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e[sizeof(builddir)-1] = PATH_SEP;
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memcpy(e+sizeof(builddir), libpath, n+1);
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libpath = e;
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}
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else {
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libpath = builddir;
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}
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setenv(LIBPATHENV, libpath, 1);
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execv(BUILDDIR"/"STRINGIZE(RUBY_INSTALL_NAME), argv);
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return -1;
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}
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