1# Anticonf (tm) script by Jeroen Ooms (2020)
2# This script will query 'pkg-config' for the required cflags and ldflags.
3# If pkg-config is unavailable or does not find the library, try setting
4# INCLUDE_DIR and LIB_DIR manually via e.g:
5# R CMD INSTALL --configure-vars='INCLUDE_DIR=/.../include LIB_DIR=/.../lib'
6
7# Library settings
8PKG_CONFIG_NAME="openssl"
9PKG_DEB_NAME="libssl-dev"
10PKG_RPM_NAME="openssl-devel"
11PKG_CSW_NAME="libssl_dev"
12PKG_BREW_NAME="openssl@1.1"
13PKG_TEST_FILE="tools/version.c"
14PKG_LIBS="-lssl -lcrypto"
15PKG_CFLAGS=""
16
17# For testing alpha version
18# export PKG_CONFIG_PATH="/usr/local/opt/openssl@3/lib/pkgconfig"
19
20# Use pkg-config if available
21pkg-config ${PKG_CONFIG_NAME} --atleast-version=1.0  2>/dev/null
22if [ $? -eq 0 ]; then
23  PKGCONFIG_CFLAGS=`pkg-config --cflags ${PKG_CONFIG_NAME}`
24  PKGCONFIG_LIBS=`pkg-config --libs ${PKG_CONFIG_NAME}`
25fi
26
27# Note that cflags may be empty in case of success
28if [ "$INCLUDE_DIR" ] || [ "$LIB_DIR" ]; then
29  echo "Found INCLUDE_DIR and/or LIB_DIR!"
30  PKG_CFLAGS="-I$INCLUDE_DIR $PKG_CFLAGS"
31  PKG_LIBS="-L$LIB_DIR $PKG_LIBS"
32elif [ "$PKGCONFIG_CFLAGS" ] || [ "$PKGCONFIG_LIBS" ]; then
33  echo "Found pkg-config cflags and libs!"
34  PKG_CFLAGS=${PKGCONFIG_CFLAGS}
35  PKG_LIBS=${PKGCONFIG_LIBS}
36elif [ `uname` = "Darwin" ]; then
37  test ! "$CI" && brew --version 2>/dev/null
38  if [ $? -eq 0 ]; then
39    BREWDIR=`brew --prefix`
40    PKG_CFLAGS="-I$BREWDIR/opt/openssl/include"
41    PKG_LIBS="-L$BREWDIR/opt/openssl/lib $PKG_LIBS"
42  else
43    curl -sfL "https://autobrew.github.io/scripts/$PKG_BREW_NAME" > autobrew
44    . ./autobrew
45  fi
46fi
47
48# Find compiler
49CC=`${R_HOME}/bin/R CMD config CC`
50CFLAGS=`${R_HOME}/bin/R CMD config CFLAGS`
51CPPFLAGS=`${R_HOME}/bin/R CMD config CPPFLAGS`
52
53# For debugging
54echo "Using PKG_CFLAGS=$PKG_CFLAGS"
55
56# Test configuration
57${CC} ${CPPFLAGS} ${PKG_CFLAGS} ${CFLAGS} -E ${PKG_TEST_FILE} >/dev/null 2>configure.log
58
59# Customize the error
60if [ $? -ne 0 ]; then
61  echo "--------------------------- [ANTICONF] --------------------------------"
62  echo "Configuration failed because $PKG_CONFIG_NAME was not found. Try installing:"
63  echo " * deb: $PKG_DEB_NAME (Debian, Ubuntu, etc)"
64  echo " * rpm: $PKG_RPM_NAME (Fedora, CentOS, RHEL)"
65  echo " * csw: $PKG_CSW_NAME (Solaris)"
66  echo " * brew: $PKG_BREW_NAME (Mac OSX)"
67  echo "If $PKG_CONFIG_NAME is already installed, check that 'pkg-config' is in your"
68  echo "PATH and PKG_CONFIG_PATH contains a $PKG_CONFIG_NAME.pc file. If pkg-config"
69  echo "is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:"
70  echo "R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'"
71  echo "-------------------------- [ERROR MESSAGE] ---------------------------"
72  cat configure.log
73  echo "--------------------------------------------------------------------"
74  exit 1
75fi
76
77# Try to link against the correct OpenSSL version
78if [ -z "$AUTOBREW" ]; then
79SONAME=`${CC} -E ${PKG_CFLAGS} src/tests/soname.h | sh | xargs`
80if [ "$SONAME" ]; then
81if [ `uname` = "Darwin" ]; then
82  PKG_LIBS_VERSIONED=`echo "${PKG_LIBS}" | sed "s/-lssl/-lssl.${SONAME}/" | sed "s/-lcrypto/-lcrypto.${SONAME}/"`
83else
84  PKG_LIBS_VERSIONED=`echo "${PKG_LIBS}" | sed "s/-lssl/-l:libssl.so.${SONAME}/" | sed "s/-lcrypto/-l:libcrypto.so.${SONAME}/"`
85fi
86
87# Test if versioned linking works
88${CC} ${PKG_CFLAGS} src/tests/main.c ${PKG_LIBS_VERSIONED} -o src/main.exe 2>/dev/null
89if [ $? -eq 0 ]; then PKG_LIBS="${PKG_LIBS_VERSIONED}"; fi
90
91# Suppress opensslv3 warnings for now
92if [ "$SONAME" = "3" ]; then
93PKG_CFLAGS="$PKG_CFLAGS -DOPENSSL_SUPPRESS_DEPRECATED"
94fi
95
96fi #SONAME
97fi #AUTOBREW
98
99echo "Using PKG_LIBS=$PKG_LIBS"
100
101# Write to Makevars
102sed -e "s|@cflags@|$PKG_CFLAGS|" -e "s|@libs@|$PKG_LIBS|" src/Makevars.in > src/Makevars
103
104# Success
105exit 0
106