X-Git-Url: http://git.sourceforge.jp/view?p=pf3gnuchains%2Fgcc-fork.git;a=blobdiff_plain;f=libgfortran%2Fconfigure.ac;h=b1e5d1e2c3580d495c6781850b695ae247ceca2b;hp=8709e16472b8f2b228a3ae6d33921da64662dfd9;hb=986d86374359a743992b8c30f9660be2bcd270fd;hpb=ef080b63ed63be1dfb4d9d11b0f40d75daa09f9d

diff --git a/libgfortran/configure.ac b/libgfortran/configure.ac
index 8709e16472b..b1e5d1e2c35 100644
--- a/libgfortran/configure.ac
+++ b/libgfortran/configure.ac
@@ -21,6 +21,18 @@ AC_ARG_ENABLE(version-specific-runtime-libs,
 [version_specific_libs=no])
 AC_MSG_RESULT($version_specific_libs)
 
+# Build with intermodule optimisations
+AC_MSG_CHECKING([for --enable-intermodule])
+AC_ARG_ENABLE(intermodule,
+[  --enable-intermodule    build the library in one step],
+[case "$enable_intermodule" in
+  yes) onestep="-onestep";;
+    *) onestep="";;
+esac],
+[onestep=""])
+AC_MSG_RESULT($enable_intermodule)
+AM_CONDITIONAL(onestep,[test x$onestep = x-onestep])
+AC_SUBST(onestep)
 
 # Gets build, host, target, *_vendor, *_cpu, *_os, etc.
 #
@@ -111,7 +123,7 @@ m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
 
 # Add -Wall -fno-repack-arrays -fno-underscoring if we are using GCC.
 if test "x$GCC" = "xyes"; then
-  AM_FCFLAGS="-I . -Wall -fno-repack-arrays -fno-underscoring"
+  AM_FCFLAGS="-I . -Wall -Werror -fimplicit-none -fno-repack-arrays -fno-underscoring"
   ## We like to use C99 routines when available.  This makes sure that
   ## __STDC_VERSION__ is set such that libc includes make them available.
   AM_CFLAGS="-std=gnu99 -Wall -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -Wextra -Wwrite-strings"
@@ -137,6 +149,27 @@ LDFLAGS="$save_LDFLAGS"
 AC_MSG_RESULT($gfortran_use_symver)
 AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" = xyes])
 
+# Figure out whether the compiler supports "-ffunction-sections -fdata-sections",
+# similarly to how libstdc++ does it
+ac_test_CFLAGS="${CFLAGS+set}"
+ac_save_CFLAGS="$CFLAGS"
+
+# Check for -ffunction-sections -fdata-sections
+AC_MSG_CHECKING([for gcc that supports -ffunction-sections -fdata-sections])
+CFLAGS='-Werror -ffunction-sections -fdata-sections'
+AC_TRY_COMPILE(, [int foo;], [ac_fdsections=yes], [ac_fdsections=no])
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS="$ac_save_CFLAGS"
+else
+  # this is the suspicious part
+  CFLAGS=""
+fi
+if test x"$ac_fdsections" = x"yes"; then
+  SECTION_FLAGS='-ffunction-sections -fdata-sections'
+fi
+AC_MSG_RESULT($ac_fdsections)
+AC_SUBST(SECTION_FLAGS)
+
 # Find other programs we need.
 AC_CHECK_TOOL(AS, as)
 AC_CHECK_TOOL(AR, ar)
@@ -192,13 +225,15 @@ AC_CHECK_FUNCS(getrusage times mkstemp strtof strtold snprintf ftruncate chsize)
 AC_CHECK_FUNCS(chdir strerror getlogin gethostname kill link symlink perror)
 AC_CHECK_FUNCS(sleep time ttyname signal alarm ctime clock access fork execl)
 AC_CHECK_FUNCS(wait setmode execvp pipe dup2 close fdopen strcasestr getrlimit)
-AC_CHECK_FUNCS(gettimeofday stat fstat lstat getpwuid vsnprintf)
+AC_CHECK_FUNCS(gettimeofday stat fstat lstat getpwuid vsnprintf dup getcwd)
+AC_CHECK_FUNCS(localtime_r gmtime_r)
 
 # Check for glibc backtrace functions
 AC_CHECK_FUNCS(backtrace backtrace_symbols)
 
 # Check for types
 AC_CHECK_TYPES([intptr_t])
+AC_CHECK_TYPES([uintptr_t])
 
 # Check libc for getgid, getpid, getuid
 AC_CHECK_LIB([c],[getgid],[AC_DEFINE([HAVE_GETGID],[1],[libc includes getgid])])
@@ -367,6 +402,12 @@ AC_CHECK_LIB([m],[y1l],[AC_DEFINE([HAVE_Y1L],[1],[libm includes y1l])])
 AC_CHECK_LIB([m],[ynf],[AC_DEFINE([HAVE_YNF],[1],[libm includes ynf])])
 AC_CHECK_LIB([m],[yn],[AC_DEFINE([HAVE_YN],[1],[libm includes yn])])
 AC_CHECK_LIB([m],[ynl],[AC_DEFINE([HAVE_YNL],[1],[libm includes ynl])])
+AC_CHECK_LIB([m],[tgamma],[AC_DEFINE([HAVE_TGAMMA],[1],[libm includes tgamma])])
+AC_CHECK_LIB([m],[tgammaf],[AC_DEFINE([HAVE_TGAMMAF],[1],[libm includes tgammaf])])
+AC_CHECK_LIB([m],[tgammal],[AC_DEFINE([HAVE_TGAMMAL],[1],[libm includes tgammal])])
+AC_CHECK_LIB([m],[lgamma],[AC_DEFINE([HAVE_LGAMMA],[1],[libm includes lgamma])])
+AC_CHECK_LIB([m],[lgammaf],[AC_DEFINE([HAVE_LGAMMAF],[1],[libm includes lgammaf])])
+AC_CHECK_LIB([m],[lgammal],[AC_DEFINE([HAVE_LGAMMAL],[1],[libm includes lgammal])])
 
 # On AIX, clog is present in libm as __clog
 AC_CHECK_LIB([m],[__clog],[AC_DEFINE([HAVE_CLOG],[1],[libm includes clog])])
@@ -383,6 +424,12 @@ LIBGFOR_CHECK_FOR_BROKEN_FPCLASSIFY
 # Check whether the system has a working stat()
 LIBGFOR_CHECK_WORKING_STAT
 
+# Check whether __mingw_snprintf() is present
+LIBGFOR_CHECK_MINGW_SNPRINTF
+
+# Check for a broken powf implementation
+LIBGFOR_CHECK_FOR_BROKEN_POWF
+
 # Check for GNU libc feenableexcept
 AC_CHECK_LIB([m],[feenableexcept],[have_feenableexcept=yes AC_DEFINE([HAVE_FEENABLEEXCEPT],[1],[libm includes feenableexcept])])
 
@@ -401,10 +448,6 @@ AC_MSG_NOTICE([FPU dependent file will be ${fpu_host}.h])
 FPU_HOST_HEADER=config/${fpu_host}.h
 AC_SUBST(FPU_HOST_HEADER)
 
-# Attempt to assert that the target is of common type in case we don't
-# have C99 integer types at all.
-LIBGFOR_TARGET_ILP32
-
 # Check out attribute support.
 LIBGFOR_CHECK_ATTRIBUTE_VISIBILITY
 LIBGFOR_CHECK_ATTRIBUTE_DLLEXPORT