diff options
Diffstat (limited to 'libf2c/configure.in')
| -rw-r--r-- | libf2c/configure.in | 118 |
1 files changed, 16 insertions, 102 deletions
diff --git a/libf2c/configure.in b/libf2c/configure.in index 6d18744034d..bf8010cd134 100644 --- a/libf2c/configure.in +++ b/libf2c/configure.in @@ -89,109 +89,23 @@ including headers and, preferably, the library, before you can configure the G77 runtime system. If necessary, install gcc now with \`LANGUAGES=c', then the target library, then build with \`LANGUAGES=f77'.])]) -# We have to firkle with the info in hconfig.h to figure out suitable types -# (via com.h). proj.h and com.h are in gcc/f/, config.h which they need -# is in gcc/ and the config files are in gcc/config/. -AC_MSG_CHECKING(f2c integer type) -# Set this back later below! -late_ac_cpp=$ac_cpp -late_cflags=$CFLAGS -extra_includes="-I$topsrcdir/gcc/f -I$topsrcdir/gcc -I$topsrcdir/include -I$topsrcdir/gcc/config -I$r/gcc" -ac_cpp="$late_ac_cpp -DIN_GCC -DHAVE_CONFIG_H $extra_includes" - -# The AC_EGREP_CPPs below have been known to fail when the header -# path is wrong after things have been moved about; the cpp error status -# counts for nothing. First check that there aren't any errors from -# the headers. -CFLAGS="$CFLAGS -DHAVE_CONFIG_H -DIN_GCC $extra_includes" -AC_TRY_COMPILE([#include "proj.h" -#define FFECOM_DETERMINE_TYPES 1 -#include "com.h"],,, -AC_MSG_ERROR([Can't run check for integer sizes -- see config.log])) -CFLAGS=$late_cflags - -AC_CACHE_VAL(g77_cv_sys_f2cinteger, -echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC -AC_EGREP_CPP(F2C_INTEGER=long int, -[#include "proj.h" -#define FFECOM_DETERMINE_TYPES 1 -#include "com.h" -#if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG -F2C_INTEGER=long int -#elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT -F2C_INTEGER=int -#else -# error "Cannot find a suitable type for F2C_INTEGER" -#endif -], - g77_cv_sys_f2cinteger="long int",) -if test "$g77_cv_sys_f2cinteger" = ""; then -echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC - AC_EGREP_CPP(F2C_INTEGER=int, -[#include "proj.h" -#define FFECOM_DETERMINE_TYPES 1 -#include "com.h" -#if FFECOM_f2cINTEGER == FFECOM_f2ccodeLONG -F2C_INTEGER=long int -#elif FFECOM_f2cINTEGER == FFECOM_f2ccodeINT -F2C_INTEGER=int -#else -# error "Cannot find a suitable type for F2C_INTEGER" -#endif -], - g77_cv_sys_f2cinteger=int,) -fi -if test "$g77_cv_sys_f2cinteger" = ""; then - AC_MSG_RESULT("") - AC_MSG_ERROR([Can't determine type for f2c integer; config.log may help.]) +dnl Checks for g77 integer types built into gcc's C front end. +AC_MSG_CHECKING(for built-in g77 integer types) +AC_CACHE_VAL(libf2c_cv_has_g77_builtin_types, +[AC_TRY_COMPILE(, + [__g77_integer g77i; +__g77_uinteger g77ui; +__g77_longint g77l; +__g77_ulongint g77ul;], + libf2c_cv_has_g77_builtin_types=yes, + libf2c_cv_has_g77_builtin_types=no)]) +AC_MSG_RESULT($libf2c_cv_has_g77_builtin_types) +if test $libf2c_cv_has_g77_builtin_types = no; then + AC_MSG_ERROR([gcc doesn't define all of the built in types __g77_integer, +__g77_uinteger, __g77_longint, and __g77_ulongint. You may not be using +a new enough version of gcc, or your target may not have type sizes which +accommodate those types.]) fi -) -AC_MSG_RESULT($g77_cv_sys_f2cinteger) -F2C_INTEGER=$g77_cv_sys_f2cinteger -AC_SUBST(F2C_INTEGER) - -AC_MSG_CHECKING(f2c long int type) -AC_CACHE_VAL(g77_cv_sys_f2clongint, -echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC -AC_EGREP_CPP(F2C_LONGINT=long int, -[#include "proj.h" -#define FFECOM_DETERMINE_TYPES 1 -#include "com.h" -#if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG -F2C_LONGINT=long int -#elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG -F2C_LONGINT=long long int -#else -# error "Cannot find a suitable type for F2C_LONGINT" -#endif -], - g77_cv_sys_f2clongint="long int",) - -if test "$g77_cv_sys_f2clongint" = ""; then -echo "configure:__oline__: using $ac_cpp" >&AC_FD_CC - AC_EGREP_CPP(F2C_LONGINT=long long int, -[#include "proj.h" -#define FFECOM_DETERMINE_TYPES 1 -#include "com.h" -#if FFECOM_f2cLONGINT == FFECOM_f2ccodeLONG -F2C_LONGINT=long int -#elif FFECOM_f2cLONGINT == FFECOM_f2ccodeLONGLONG -F2C_LONGINT=long long int -#else -# error "Cannot find a suitable type for F2C_LONGINT" -#endif -], - g77_cv_sys_f2clongint="long long int",) -fi -if test "$g77_cv_sys_f2clongint" = ""; then - AC_MSG_RESULT("") - AC_MSG_ERROR([Can't determine type for f2c long int; config.log may help.]) -fi -) -AC_MSG_RESULT($g77_cv_sys_f2clongint) -F2C_LONGINT=$g77_cv_sys_f2clongint -AC_SUBST(F2C_LONGINT) -ac_cpp=$late_ac_cpp # avoid confusion in case the `makefile's from the f2c distribution have # got put here |