projects / deliverable / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| b11fb939 | 1 | dnl |
| b11fb939 KR |
2 | dnl This ugly hack is needed because the Cygnus configure script won't |
| 3 | dnl tell us what CC is going to be, and "cc" isn't always right. (The | |
| 4 | dnl top-level Makefile will always override anything we choose here, so | |
| 5 | dnl the usual gcc/cc selection is useless.) | |
| 6 | dnl | |
| 7 | dnl It knows where it is in the tree; don't try using it elsewhere. | |
| 8 | dnl | |
| 9 | undefine([AC_PROG_CC])dnl | |
| 10 | define(AC_PROG_CC, | |
| 11 | [AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
| 12 | AC_PROVIDE([$0])dnl | |
| 13 | dnl | |
| 14 | dnl The ugly bit... | |
| 15 | dnl | |
| 16 | AC_MSG_CHECKING([for CC]) | |
| 17 | dnl Don't bother with cache. | |
| 18 | test -z "$CC" && CC=`egrep '^CC *=' ../Makefile | tail -1 | sed 's/^CC *= *//'` | |
| 19 | test -z "$CC" && CC=cc | |
| 20 | AC_MSG_RESULT(setting CC to $CC) | |
| 21 | AC_SUBST(CC) | |
| 22 | dnl | |
| 23 | dnl | |
| 24 | # Find out if we are using GNU C, under whatever name. | |
| 25 | cat > conftest.c <<EOF | |
| 26 | #ifdef __GNUC__ | |
| 27 | yes | |
| 28 | #endif | |
| 29 | EOF | |
| 30 | ${CC-cc} -E conftest.c > conftest.out 2>&1 | |
| 31 | if egrep yes conftest.out >/dev/null 2>&1; then | |
| 32 | GCC=yes | |
| 33 | else | |
| 34 | GCC= | |
| 35 | fi | |
| 36 | rm -f conftest* | |
| 37 | ])dnl |