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38 lines
1.4 KiB
Plaintext
38 lines
1.4 KiB
Plaintext
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sinclude(./aclocal.m4)dnl Autoconf lossage
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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
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# Local configure fragment for sysdeps/unix/sysv/linux/powerpc/.
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AC_CACHE_CHECK(whether $CC $CFLAGS -mlong-double-128 uses IBM extended format,
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libc_cv_mlong_double_128ibm, [dnl
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -mlong-double-128"
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AC_TRY_COMPILE([#include <float.h>], [
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#if LDBL_MANT_DIG != 106
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# error "compiler doesn't implement IBM extended format of long double"
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#endif
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long double foobar (long double x) { return x; }],
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libc_cv_mlong_double_128ibm=yes,
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libc_cv_mlong_double_128ibm=no)
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CFLAGS="$save_CFLAGS"])
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if test "$libc_cv_mlong_double_128ibm" = no; then
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AC_CACHE_CHECK(whether $CC $CFLAGS supports -mabi=ibmlongdouble,
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libc_cv_mabi_ibmlongdouble, [dnl
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save_CFLAGS="$CFLAGS"
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CFLAGS="$CFLAGS -mlong-double-128 -mabi=ibmlongdouble"
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AC_TRY_COMPILE([#include <float.h>], [
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#if LDBL_MANT_DIG != 106
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# error "compiler doesn't implement IBM extended format of long double"
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#endif
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long double foobar (long double x) { return x; }],
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libc_cv_mabi_ibmlongdouble=yes,
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libc_cv_mabi_ibmlongdouble=no)
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CFLAGS="$save_CFLAGS"])
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if test "$libc_cv_mabi_ibmlongdouble" = yes; then
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CFLAGS="$CFLAGS -mabi=ibmlongdouble"
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else
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AC_MSG_ERROR([this configuration requires -mlong-double-128 IBM extended format support])
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fi
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fi
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