1AC_DEFUN([AC_PYTHON_DEVEL],[ 2 # 3 # Allow the use of a (user set) custom python version 4 # 5 AC_ARG_VAR([PYTHON_VERSION],[The installed Python 6 version to use, for example '2.3'. This string 7 will be appended to the Python interpreter 8 canonical name.]) 9 10 AC_PATH_PROG([PYTHON],[python[$PYTHON_VERSION]]) 11 if test -z "$PYTHON"; then 12 AC_MSG_ERROR([Cannot find 'python$PYTHON_VERSION' in your system path. You can use the environment variable 'PYTHON_VERSION=version_number' for an explicit version.]) 13 PYTHON_VERSION="" 14 fi 15 16 if test -z "$PYTHON_VERSION"; then 17 PYTHON_VERSION=`$PYTHON -c "import sys; \ 18 print(sys.version.split()[[0]])"` 19 fi 20 # calculate the version number components. 21 [ 22 v="$PYTHON_VERSION" 23 PYTHON_VERSION_MAJOR=`echo $v | sed 's/[^0-9].*//'` 24 if test -z "$PYTHON_VERSION_MAJOR"; then PYTHON_VERSION_MAJOR="0"; fi 25 v=`echo $v | sed -e 's/^[0-9]*$//' -e 's/[0-9]*[^0-9]//'` 26 PYTHON_VERSION_MINOR=`echo $v | sed 's/[^0-9].*//'` 27 if test -z "$PYTHON_VERSION_MINOR"; then PYTHON_VERSION_MINOR="0"; fi 28 v=`echo $v | sed -e 's/^[0-9]*$//' -e 's/[0-9]*[^0-9]//'` 29 PYTHON_VERSION_PATCH=`echo $v | sed 's/[^0-9].*//'` 30 if test -z "$PYTHON_VERSION_PATCH"; then PYTHON_VERSION_PATCH="0"; fi 31 ] 32 33 # For some systems, sysconfig exists, but has the wrong paths, 34 # on Debian 10, for python 2.7 and 3.7. So, we check the version, 35 # and for older versions try distutils.sysconfig first. For newer 36 # versions>=3.10, where distutils.sysconfig is deprecated, use 37 # sysconfig first and then attempt the other one. 38 py_distutils_first="no" 39 if test $PYTHON_VERSION_MAJOR -lt 3; then 40 py_distutils_first="yes" 41 fi 42 if test $PYTHON_VERSION_MAJOR -eq 3 -a $PYTHON_VERSION_MINOR -lt 10; then 43 py_distutils_first="yes" 44 fi 45 46 # Check if you have the first module 47 if test "$py_distutils_first" = "yes"; then m="distutils"; else m="sysconfig"; fi 48 sysconfig_module="" 49 AC_MSG_CHECKING([for the $m Python module]) 50 if ac_modulecheck_result1=`$PYTHON -c "import $m" 2>&1`; then 51 AC_MSG_RESULT([yes]) 52 sysconfig_module="$m" 53 else 54 AC_MSG_RESULT([no]) 55 fi 56 57 # if not found, try the other one. 58 if test -z "$sysconfig_module"; then 59 if test "$py_distutils_first" = "yes"; then m2="sysconfig"; else m2="distutils"; fi 60 AC_MSG_CHECKING([for the $m2 Python module]) 61 if ac_modulecheck_result2=`$PYTHON -c "import $m2" 2>&1`; then 62 AC_MSG_RESULT([yes]) 63 sysconfig_module="$m2" 64 else 65 AC_MSG_RESULT([no]) 66 AC_MSG_ERROR([cannot import Python module "$m", or "$m2". 67 Please check your Python installation. The errors are: 68 $m 69 $ac_modulecheck_result1 70 $m2 71 $ac_modulecheck_result2]) 72 PYTHON_VERSION="" 73 fi 74 fi 75 if test "$sysconfig_module" = "distutils"; then sysconfig_module="distutils.sysconfig"; fi 76 77 # 78 # Check for Python include path 79 # 80 AC_MSG_CHECKING([for Python include path]) 81 if test -z "$PYTHON_CPPFLAGS"; then 82 if test "$sysconfig_module" = "sysconfig"; then 83 python_path=`$PYTHON -c 'import sysconfig; \ 84 print(sysconfig.get_path("include"));'` 85 else 86 python_path=`$PYTHON -c "import distutils.sysconfig; \ 87 print(distutils.sysconfig.get_python_inc());"` 88 fi 89 if test -n "${python_path}"; then 90 python_path="-I$python_path" 91 fi 92 PYTHON_CPPFLAGS=$python_path 93 fi 94 AC_MSG_RESULT([$PYTHON_CPPFLAGS]) 95 AC_SUBST([PYTHON_CPPFLAGS]) 96 97 # 98 # Check for Python library path 99 # 100 AC_MSG_CHECKING([for Python library path]) 101 if test -z "$PYTHON_LDFLAGS"; then 102 PYTHON_LDFLAGS=`$PYTHON -c "from $sysconfig_module import *; \ 103 print('-L'+get_config_var('LIBDIR')+' -L'+get_config_var('LIBDEST')+' '+get_config_var('BLDLIBRARY'));"` 104 fi 105 AC_MSG_RESULT([$PYTHON_LDFLAGS]) 106 AC_SUBST([PYTHON_LDFLAGS]) 107 108 if test -z "$PYTHON_LIBDIR"; then 109 PYTHON_LIBDIR=`$PYTHON -c "from $sysconfig_module import *; \ 110 print(get_config_var('LIBDIR'));"` 111 fi 112 113 # 114 # Check for site packages 115 # 116 AC_MSG_CHECKING([for Python site-packages path]) 117 if test -z "$PYTHON_SITE_PKG"; then 118 if test "$sysconfig_module" = "sysconfig"; then 119 PYTHON_SITE_PKG=`$PYTHON -c 'import sysconfig; \ 120 print(sysconfig.get_path("platlib"));'` 121 else 122 PYTHON_SITE_PKG=`$PYTHON -c "import distutils.sysconfig; \ 123 print(distutils.sysconfig.get_python_lib(1,0));"` 124 fi 125 fi 126 AC_MSG_RESULT([$PYTHON_SITE_PKG]) 127 AC_SUBST([PYTHON_SITE_PKG]) 128 129 # 130 # final check to see if everything compiles alright 131 # 132 AC_MSG_CHECKING([consistency of all components of python development environment]) 133 AC_LANG_PUSH([C]) 134 # save current global flags 135 ac_save_LIBS="$LIBS" 136 ac_save_CPPFLAGS="$CPPFLAGS" 137 138 LIBS="$LIBS $PYTHON_LDFLAGS" 139 CPPFLAGS="$CPPFLAGS $PYTHON_CPPFLAGS" 140 AC_LINK_IFELSE([AC_LANG_PROGRAM([[ 141 #include <Python.h> 142 ]],[[ 143 Py_Initialize(); 144 ]])],[pythonexists=yes],[pythonexists=no]) 145 146 AC_MSG_RESULT([$pythonexists]) 147 148 if test ! "$pythonexists" = "yes"; then 149 AC_MSG_ERROR([ 150 Could not link test program to Python. Maybe the main Python library has been 151 installed in some non-standard library path. If so, pass it to configure, 152 via the LDFLAGS environment variable. 153 Example: ./configure LDFLAGS="-L/usr/non-standard-path/python/lib" 154 ============================================================================ 155 ERROR! 156 You probably have to install the development version of the Python package 157 for your distribution. The exact name of this package varies among them. 158 ============================================================================ 159 ]) 160 PYTHON_VERSION="" 161 fi 162 AC_LANG_POP 163 # turn back to default flags 164 CPPFLAGS="$ac_save_CPPFLAGS" 165 LIBS="$ac_save_LIBS" 166 167 # 168 # all done! 169 # 170]) 171 172