X-Git-Url: https://git.cworth.org/git?p=fips;a=blobdiff_plain;f=configure;h=ae6b31af5ca49551530797efc08c2b175953e798;hp=7c5a38ce6e2dae6f3d4cf075081e81231c92747d;hb=99eeb7e0771887efc60f295db6a30a76c677c933;hpb=35ee06686adbfa4dd0feca625eb9a0dfee2d087e

diff --git a/configure b/configure
index 7c5a38c..ae6b31a 100755
--- a/configure
+++ b/configure
@@ -217,6 +217,32 @@ exit 1
 
 fi
 
+printf "Checking for working C compiler (${CC})... "
+printf "int main(void){return 42;}\n" > minimal.c
+if ${CC} -o minimal minimal.c > /dev/null 2>&1
+then
+    printf "Yes.\n"
+else
+    printf "No.\n"
+    cat <<EOF
+
+*** Error: No functioning C compiler found. Either set the CC environment
+to a working C compiler, or else install gcc:
+
+	http://gcc.gnu.org/
+
+You may be able to install gcc with a command such as:
+
+	sudo apt-get install build-essential
+    or:
+	sudo yum install make automake gcc gcc-c++ kernel-devel
+
+EOF
+
+exit 1
+
+fi
+
 printf "Checking for libtalloc... "
 if pkg-config --exists talloc; then
     printf "Yes.\n"
@@ -269,7 +295,7 @@ fi
 printf "Checking for GL window-system-binding headers:\n"
 have_gl_winsys=0
 
-printf "    Checking for GL/glx.h... "
+printf "	Checking for GL/glx.h... "
 have_glx=No
 printf "#include <GL/glx.h>\nint main(void){return 0;}\n" > glx-minimal.c
 if ${CC} -o glx-minimal glx-minimal.c ${gl_cflags} > /dev/null 2>&1
@@ -282,14 +308,14 @@ else
 fi
 rm -f glx-minimal glx-minimal.c
 
-printf "    Checking for GL/egl.h... "
+printf "	Checking for EGL/egl.h... "
 have_egl=No
 if pkg-config --exists egl; then
     printf "Yes.\n"
     have_egl=Yes
     egl_cflags=$(pkg-config --cflags egl)
 else
-    printf "#include <GL/egl.h>\nint main(void){return 0;}\n" > egl-minimal.c
+    printf "#include <EGL/egl.h>\nint main(void){return 0;}\n" > egl-minimal.c
     if ${CC} -o egl-minimal egl-minimal.c ${gl_cflags} > /dev/null 2>&1
     then
 	printf "Yes.\n"
@@ -305,6 +331,57 @@ if [ $have_gl_winsys -eq 0 ]; then
     errors=$((errors + 1))
 fi
 
+printf "int main(void){return 0;}\n" > minimal.c
+
+WARN_CFLAGS=""
+printf "Checking for available C compiler warning flags:\n"
+for flag in -Wall -Wextra -Wmissing-declarations; do
+    if ${CC} $flag -o minimal minimal.c > /dev/null 2>&1
+    then
+	WARN_CFLAGS="${WARN_CFLAGS}${WARN_CFLAGS:+ }${flag}"
+    fi
+done
+printf "\t${WARN_CFLAGS}\n"
+
+rm -f minimal minimal.c
+
+printf "#include <features.h>\nint main(void){return 0;}\n" > arch-minimal.c
+
+printf "Checking for machine-dependent compiler support:\n"
+
+printf "	Compiler can create 32-bit binaries... "
+have_m32=Yes
+if ${CC} -m32 -o arch-minimal arch-minimal.c > /dev/null 2>&1
+then
+    printf "Yes.\n"
+else
+    printf "No.\n"
+    have_m32=No
+fi
+
+printf "	Compiler can create 64-bit binaries... "
+have_m64=Yes
+if ${CC} -m64 -o arch-minimal arch-minimal.c > /dev/null 2>&1
+then
+    printf "Yes.\n"
+else
+    printf "No.\n"
+    have_m64=No
+fi
+
+if [ "$have_m32" = "No" ] || [ "$have_m64" = "No" ]; then
+    cat <<EOF
+
+* Warning: Cannot create both 32 and 64-bit fips libraries. Fips will not
+           support applications of the non-native size. Fixing this may be
+           as simple as running a command such as:
+
+		sudo apt-get install gcc-multilib
+EOF
+fi
+
+rm -f arch-minimal arch-minimal.c
+
 if [ $errors -gt 0 ]; then
     cat <<EOF
 
@@ -359,20 +436,6 @@ EOF
     exit 1
 fi
 
-printf "int main(void){return 0;}\n" > minimal.c
-
-WARN_CFLAGS=""
-printf "Checking for available C compiler warning flags... "
-for flag in -Wall -Wextra -Wmissing-declarations; do
-    if ${CC} $flag -o minimal minimal.c > /dev/null 2>&1
-    then
-	WARN_CFLAGS="${WARN_CFLAGS}${WARN_CFLAGS:+ }${flag}"
-    fi
-done
-printf "\n\t${WARN_CFLAGS}\n"
-
-rm -f minimal minimal.c
-
 cat <<EOF
 
 All required packages were found.
@@ -448,6 +511,10 @@ mandir = ${MANDIR:=\$(prefix)/share/man}
 # The directory to which read-only (configuration) files should be installed
 sysconfdir = ${SYSCONFDIR:=\$(prefix)/etc}
 
+# Whether compiler can create 32 or 64-bit binaries
+COMPILER_SUPPORTS_32 = ${have_m32}
+COMPILER_SUPPORTS_64 = ${have_m64}
+
 # Flags needed to compile and link against talloc
 TALLOC_CFLAGS = ${talloc_cflags}
 TALLOC_LDFLAGS = ${talloc_ldflags}
@@ -470,10 +537,6 @@ EGL_CFLAGS = ${egl_cflags}
 
 # Flags needed to have linker link only to necessary libraries
 AS_NEEDED_LDFLAGS = ${as_needed_ldflags}
-
-# Combined flags for compiling and linking against all of the above
-CONFIGURE_CFLAGS = \$(TALLOC_CFLAGS) \$(LIBELF_CFLAGS) \$(GL_CFLAGS) \$(EGL_CFLAGS)
-CONFIGURE_LDFLAGS = \$(TALLOC_LDFLAGS) \$(LIBELF_LDFLAGS)
 EOF
 
 # construct config.h